How Do Organisms Reproduce Class 10 MCQ

Q: What is reproduction?

Reproduction is the process by which organisms create new individuals.

Q: What are the different modes of reproduction?

The different modes of reproduction include fission, fragmentation, regeneration, budding, vegetative propagation, and spore formation.

Q: What is the importance of variation in reproduction?

Variation is important in reproduction as it allows for the survival of species in changing environments.

Q: What are the male and female reproductive parts in humans?

In males, the main reproductive parts are the testes and penis. In females, the main reproductive parts are the ovaries, fallopian tubes, uterus, and vagina.

Q: What are the different methods of contraception?

The different methods of contraception include condoms, oral pills, copper-T, and surgical methods.

Question 1

Question 1: Why is reproduction essential for a species, but not necessarily for an individual organism?

A. It ensures the survival of the individual.B. It helps the individual organism grow.C. It maintains the continuity of the species.D. It provides energy for the individual organism.

Answer

C. It maintains the continuity of the species. Reproduction ensures that the species continues to exist even though individual organisms have a limited lifespan. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 2

Question 2: How does reproduction contribute to the noticeable existence of a species?

A. By making organisms require less energy.B. By increasing the number of organisms within a species.C. By preventing organisms from looking similar to each other.D. By reducing the competition between different species.

Answer

B. By increasing the number of organisms within a species. A large number of individuals makes a species more visible and prominent. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 3

Question 3: If an organism did not reproduce, how might its existence be affected?

A. It would live longer.B. It would be less likely to be noticed.C. It would require more energy.D. It would be more susceptible to disease.

Answer

B. It would be less likely to be noticed. With only one individual, the species would be less visible and might go unnoticed. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 4

Question 4: What is the primary reason that individual organisms reproduce, even though it requires a significant energy expenditure?

A. To grow larger.B. To ensure the continuation of their species. C. To become stronger.D. To avoid extinction within their own lifetime.

Answer

B. To ensure the continuation of their species. While reproduction is costly in terms of energy, it’s essential for the long-term survival of the species. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 5

Question 5: How does reproduction contribute to the stability of an ecosystem?

A. By preventing the overpopulation of a single species.B. By ensuring a continuous supply of energy to all organisms.C. By maintaining a balance between different species.D. By reducing the need for organisms to compete for resources.

Answer

C. By maintaining a balance between different species. Reproduction helps maintain the populations of different species, which contributes to the overall balance of the ecosystem. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 6

Question 6: What is the fundamental basis of reproduction?

A. The creation of energy.B. The replication of the body design.C. The consumption of nutrients.D. The exchange of gases.

Answer

B. The replication of the body design. Reproduction involves creating new individuals with similar body designs to their parents. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 7

Question 7: What is the relationship between body design and the blueprint for that design?

A. The blueprint is a smaller version of the body design.B. The body design is a reflection of the blueprint.C. The blueprint provides instructions for the body design.D. The body design is independent of the blueprint.

Answer

C. The blueprint provides instructions for the body design. The “blueprint” refers to the genetic information that guides the development of an organism’s body. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 8

Question 8: What is the primary carrier of the “blueprint” for an organism’s body design?

A. ProteinsB. CarbohydratesC. LipidsD. DNA

Answer

D. DNA. DNA (deoxyribonucleic acid) carries the genetic information that determines an organism’s traits and characteristics. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 9

Question 9: What are the small segments of DNA that carry information for specific traits called?

A. CellsB. GenesC. ChromosomesD. Nucleotides

Answer

B. Genes. Genes are the units of heredity that determine specific traits. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 10

Question 10: Where are the genes located within a cell?

A. CytoplasmB. Cell membraneC. ChromosomesD. Mitochondria

Answer

C. Chromosomes. Chromosomes are structures within the cell nucleus that contain the DNA. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 11

Question 11: What is the process of creating an exact copy of the DNA called?

A. TranslationB. TranscriptionC. ReplicationD. Mutation

Answer

C. Replication. DNA replication is the process by which an identical copy of a DNA molecule is created. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 12

Question 12: Why is DNA replication important in reproduction?

A. It ensures that variations are introduced in the offspring.B. It allows for the transfer of genetic information from parent to offspring.C. It helps the parent organism to grow and develop.D. It prevents diseases in the offspring.

Answer

B. It allows for the transfer of genetic information from parent to offspring. Accurate DNA replication ensures that offspring inherit the necessary genetic information from their parents. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 13

Question 13: Why do offspring often differ slightly from their parents?

A. Due to errors in DNA replicationB. Because of the influence of the environmentC. As a result of sexual reproductionD. All of the above

Answer

D. All of the above. Variations can arise from changes in DNA sequence, environmental factors, and the combination of genetic material in sexual reproduction. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 14

Question 14: What is the significance of variations in a species?

A. They make organisms weaker and less likely to survive.B. They increase the chances of survival in a changing environment.C. They have no significant impact on the survival of a species.D. They make organisms identical to their parents.

Answer

B. They increase the chances of survival in a changing environment. Variations provide the raw material for natural selection, allowing species to adapt. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 15

Question 15: How can variations lead to the formation of new species over time?

A. By preventing organisms from reproducingB. By causing immediate extinction of the original speciesC. By allowing for the accumulation of beneficial traitsD. By making organisms less adapted to their environment

Answer

C. By allowing for the accumulation of beneficial traits. Over time, accumulated variations can lead to significant differences, resulting in new species. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 16

Question 16: What is the name of the process by which single-celled organisms like bacteria reproduce?

A. FissionB. FragmentationC. BuddingD. Spore formation

Answer

A. Fission. Fission is a type of asexual reproduction where a single-celled organism divides into two or more new individuals. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 17

Question 17: In what way does the division of an amoeba differ from that of other single-celled organisms?

A. It can divide in any plane.B. It forms buds.C. It produces spores.D. It requires a mate.

Answer

A. It can divide in any plane. Amoeba can divide into two daughter cells in any plane, without a specific orientation. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 18

Question 18: What is the process of division in organisms like Leishmania called?

A. Binary fissionB. Multiple fissionC. BuddingD. Fragmentation

Answer

A. Binary fission. Leishmania undergoes binary fission, where it divides into two daughter cells in a definite orientation. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 19

Question 19: How does the malarial parasite reproduce?

A. BuddingB. Binary fissionC. Multiple fissionD. Spore formation

Answer

C. Multiple fission. The malarial parasite (Plasmodium) undergoes multiple fission, where it divides into many daughter cells simultaneously. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 20

Question 20: What distinguishes binary fission from multiple fission?

A. The number of daughter cells produced.B. Whether it occurs in unicellular or multicellular organisms.C. The involvement of a mate.D. The use of spores.

Answer

A. The number of daughter cells produced. Binary fission results in two daughter cells, while multiple fission produces many. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 21

Question 21: What is the process by which organisms like Spirogyra reproduce?

A. FissionB. FragmentationC. BuddingD. Spore formation

Answer

B. Fragmentation. Spirogyra reproduces by fragmentation, where the filament breaks into smaller pieces that grow into new individuals. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 22

Question 22: Why is fragmentation a common mode of reproduction in simple multicellular organisms?

A. Because they have specialized reproductive organs.B. Because they cannot reproduce through cell division.C. Because their body organization is relatively simple.D. Because they live in aquatic environments.

Answer

C. Because their body organization is relatively simple. Simple multicellular organisms can reproduce through fragmentation due to their less complex structure. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 23

Question 23: What is the key difference between fission and fragmentation?

A. Fission occurs only in unicellular organisms, while fragmentation occurs only in multicellular organisms.B. Fission involves the division of a single cell, while fragmentation involves the breaking of a multicellular organism.C. Fission requires water, while fragmentation does not.D. Fission is a form of sexual reproduction, while fragmentation is a form of asexual reproduction.

Answer

B. Fission involves the division of a single cell, while fragmentation involves the breaking of a multicellular organism. Fission is for unicellular organisms, and fragmentation is for multicellular organisms. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 24

Question 24: What is the ability of an organism to regrow lost body parts called?

A. FragmentationB. BuddingC. RegenerationD. Spore formation

Answer

C. Regeneration. Regeneration is the ability to regrow a whole organism from a part that has been cut off. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 25

Question 25: Which of these organisms is known for its ability to regenerate?

A. SpirogyraB. AmoebaC. PlanariaD. Yeast

Answer

C. Planaria. Planaria is a flatworm known for its remarkable regenerative abilities. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 26

Question 26: Why is regeneration not considered the same as reproduction, even though it can give rise to new individuals?

A. Because it requires two parents.B. Because it doesn’t involve DNA replication.C. Because it’s not the primary mode of reproduction for most organisms.D. Because it only occurs in simple organisms.

Answer

C. Because it’s not the primary mode of reproduction for most organisms. Regeneration is typically a response to injury, not a regular means of reproduction. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 27

Question 27: What is the role of specialized cells in regeneration?

A. They prevent the organism from being cut or broken.B. They help the organism find food.C. They are responsible for the regrowth of lost body parts.D. They produce spores.

Answer

C. They are responsible for the regrowth of lost body parts. Specialized cells are responsible for the process of regeneration. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 28

Question 28: Which of these organisms reproduces by budding?

A. SpirogyraB. HydraC. PlanariaD. Amoeba

Answer

B. Hydra. Hydra reproduces asexually by budding, where a new individual develops from an outgrowth on the parent’s body. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 29

Question 29: What is a bud in the context of asexual reproduction?

A. A small outgrowth on the parent organism that develops into a new individual.B. A specialized cell that can regenerate a whole organism.C. A reproductive part that contains spores.D. A type of seed that can grow into a new plant.

Answer

A. A small outgrowth on the parent organism that develops into a new individual. A bud is formed by repeated cell division at a specific site on the parent’s body. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 30

Question 30: How does the offspring produced by budding compare to the parent organism?

A. It is genetically different.B. It is identical in shape but smaller.C. It is genetically identical.D. It is a different species.

Answer

C. It is genetically identical. Budding is a form of asexual reproduction, so the offspring is genetically identical to the parent. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 31

Question 31: What is the process by which new plants can be grown from parts like roots, stems, and leaves?

A. Sexual reproductionB. BuddingC. Vegetative propagationD. Spore formation

Answer

C. Vegetative propagation. Vegetative propagation is a form of asexual reproduction in plants where new individuals arise from vegetative parts. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 32

Question 32: What is an advantage of vegetative propagation in agriculture?

A. It allows for the production of genetically diverse plants.B. It is a slower method of producing new plants.C. It helps in the propagation of plants that have lost the ability to produce seeds.D. It requires the fusion of male and female gametes.

Answer

C. It helps in the propagation of plants that have lost the ability to produce seeds. Vegetative propagation allows for the reproduction of seedless plants. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 33

Question 33: Why is vegetative propagation a preferred method for growing certain crops?

A. It is a complex and time-consuming process.B. It leads to a longer lifespan for the plants.C. It results in plants with identical characteristics to the parent plant.D. It requires specialized skills and knowledge.

Answer

C. It results in plants with identical characteristics to the parent plant. Vegetative propagation ensures the preservation of desirable traits. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 34

Question 34: Which of these is NOT a method of vegetative propagation?

A. LayeringB. GraftingC. BuddingD. Pollination

Answer

D. Pollination. Pollination is a process associated with sexual reproduction in plants. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 35

Question 35: What can you conclude from the observation that a potato eye can grow into a new plant?

A. Potatoes reproduce sexually.B. Potatoes can reproduce through vegetative propagation.C. Potatoes cannot reproduce.D. Potatoes require seeds to reproduce.

Answer

B. Potatoes can reproduce through vegetative propagation. The “eyes” of a potato are buds that can develop into new plants. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 36

Question 36: What are the tiny, thick-walled structures that some organisms use for reproduction called?

A. BudsB. SeedsC. SporesD. Gametes

Answer

C. Spores. Spores are reproductive units that can develop into new individuals without fertilization. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 37

Question 37: Which of these organisms reproduces through spore formation?

A. HydraB. SpirogyraC. Rhizopus (bread mold)D. Planaria

Answer

C. Rhizopus (bread mold). Rhizopus produces spores in sporangia, which are involved in asexual reproduction. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 38

Question 38: What is the primary function of the thick walls surrounding spores?

A. To help them move.B. To provide nutrition.C. To protect them from unfavorable conditions.D. To attract pollinators.

Answer

C. To protect them from unfavorable conditions. The thick walls allow spores to survive in harsh conditions until they reach a suitable environment. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 39

Question 39: What is a sporangium?

A. A type of spore.B. A structure that contains spores.C. A specialized cell for regeneration.D. A part of the flower.

Answer

B. A structure that contains spores. Sporangia are the structures where spores are produced. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 40

Question 40: How are spores dispersed?

A. Through waterB. Through the airC. By animalsD. All of the above

Answer

D. All of the above. Spores can be dispersed through various means, including water, air, and animals. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 41

Question 41: What is the key characteristic of sexual reproduction?

A. It involves only one parent.B. It requires the fusion of male and female gametes.C. It produces offspring that are identical to the parent.D. It does not involve the creation of a DNA copy.

Answer

B. It requires the fusion of male and female gametes. Sexual reproduction involves the combination of genetic material from two parents. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 42

Question 42: What are the specialized cells involved in sexual reproduction called?

A. SporesB. BudsC. GametesD. Zygotes

Answer

C. Gametes. Gametes are the sex cells (sperm and egg) that fuse during sexual reproduction. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 43

Question 43: What is the process of fusion of male and female gametes called?

A. PollinationB. FertilizationC. RegenerationD. Fragmentation

Answer

B. Fertilization. Fertilization is the union of a sperm and an egg to form a zygote. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 44

Question 44: What is the product of fertilization?

A. A sporeB. A budC. A gameteD. A zygote

Answer

D. A zygote. A zygote is the single cell that results from the fusion of gametes. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 45

Question 45: What is the primary advantage of sexual reproduction over asexual reproduction?

A. It is a faster process.B. It requires less energy.C. It leads to greater genetic variation in the offspring.D. It produces more offspring.

Answer

C. It leads to greater genetic variation in the offspring. The combination of genetic material from two parents creates offspring with unique combinations of traits. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 46

Question 46: Why is the accuracy of DNA copying important for the survival of a species?

A. It ensures a high rate of variation.B. It prevents the occurrence of any variations.C. It maintains essential features for survival in a particular niche.D. It allows for rapid evolution.

Answer

C. It maintains essential features for survival in a particular niche. Accurate DNA copying ensures that offspring inherit traits that allow them to survive in their environment. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 47

Question 47: How does sexual reproduction contribute to increased variation in a species?

A. By preventing the combination of DNA from different individuals.B. By promoting the stability of populations.C. By combining DNA from two individuals, creating new combinations of variants.D. By limiting the number of offspring produced.

Answer

C. By combining DNA from two individuals, creating new combinations of variants. Sexual reproduction shuffles and combines genetic material from two parents. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 48

Question 48: What is a potential challenge associated with combining DNA from two individuals in sexual reproduction?

A. Increased risk of disease transmission.B. Difficulty in finding a mate.C. Doubling the amount of DNA in each generation.D. Reduced genetic variation.

Answer

C. Doubling the amount of DNA in each generation. Combining DNA from two parents could lead to an exponential increase in DNA content in each generation. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 49

Question 49: What is the process that helps maintain a stable amount of DNA in each generation during sexual reproduction?

A. MitosisB. MeiosisC. FertilizationD. Budding

Answer

B. Meiosis. Meiosis is a type of cell division that reduces the number of chromosomes in gametes by half. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 50

Question 50: What are the specialized cells with half the number of chromosomes compared to non-reproductive cells called?

A. Somatic cellsB. Germ cellsC. Blood cellsD. Stem cells

Answer

B. Germ cells. Germ cells are the precursors to gametes and undergo meiosis to reduce their chromosome number. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 51

Question 51: Where are the reproductive parts of an angiosperm located?

A. RootsB. StemsC. LeavesD. Flower

Answer

D. Flower. The flower houses the male and female reproductive organs of a flowering plant. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 52

Question 52: What are the male reproductive parts of a flower called?

A. SepalsB. PetalsC. StamensD. Pistils

Answer

C. Stamens. Stamens produce the pollen grains, which contain the male gametes. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 53

Question 53: What is the function of the pistil in a flower?

A. To attract pollinatorsB. To produce pollenC. To protect the flower budD. To produce the female gametes

Answer

D. To produce the female gametes. The pistil contains the ovary, which houses the ovules that develop into seeds after fertilization. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 54

Question 54: What is the term for the transfer of pollen from the stamen to the stigma of the same flower?

A. Cross-pollinationB. Self-pollinationC. FertilizationD. Germination

Answer

B. Self-pollination. Self-pollination occurs when pollen from the anther of a flower is transferred to the stigma of the same flower. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 55

Question 55: What agents can help in the transfer of pollen from one flower to another?

A. WindB. WaterC. AnimalsD. All of the above

Answer

D. All of the above. Wind, water, and animals (especially insects and birds) can act as pollinators. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 56

Question 56: What is the function of the pollen tube?

A. To attract pollinatorsB. To carry the male gamete to the ovuleC. To protect the pollen grainD. To produce nectar

Answer

B. To carry the male gamete to the ovule. The pollen tube grows from the pollen grain and travels through the style to reach the ovary. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 57

Question 57: What develops from the ovule after fertilization?

A. FruitB. SeedC. StemD. Leaf

Answer

B. Seed. The ovule develops into a seed, which contains the embryo and stored food. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 58

Question 58: What is the process of a seed developing into a seedling called?

A. PollinationB. FertilizationC. GerminationD. Fragmentation

Answer

C. Germination. Germination is the process by which a seed sprouts and begins to grow into a new plant. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 59

Question 59: What is the primary advantage of seed formation for plants?

A. It allows for dispersal of offspring to new locations.B. It attracts pollinators.C. It provides nutrition to the parent plant.D. It prevents competition with the parent plant.

Answer

A. It allows for dispersal of offspring to new locations. Seeds can be dispersed by various means, allowing plants to colonize new areas. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 60

Question 60: What is the function of the cotyledon in a seed?

A. To protect the embryoB. To provide nutrition to the embryoC. To absorb waterD. To anchor the seedling

Answer

B. To provide nutrition to the embryo. The cotyledon stores food reserves that nourish the developing embryo. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 61

Question 61: What is the name of the future shoot in an embryo?

A. RadicleB. PlumuleC. CotyledonD. Endosperm

Answer

B. Plumule. The plumule is the embryonic shoot that develops into the stem and leaves. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 62

Question 62: What is the name of the future root in an embryo?

A. RadicleB. PlumuleC. CotyledonD. Endosperm

Answer

A. Radicle. The radicle is the embryonic root that develops into the root system of the plant. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 63

Question 63: What is the term for a flower that contains both stamens and pistils?

A. UnisexualB. BisexualC. AsexualD. Sterile

Answer

B. Bisexual. A bisexual flower has both male and female reproductive organs. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 64

Question 64: What is the term for a flower that contains either stamens or pistils, but not both?

A. UnisexualB. BisexualC. AsexualD. Sterile

Answer

A. Unisexual. A unisexual flower has either male or female reproductive organs. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

C. To attract pollinators. Petals are often brightly colored to attract insects and other animals that assist in pollination. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. Sexual reproduction. Human reproduction involves the fusion of male and female gametes. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. Fallopian tube. The fallopian tube is where the sperm meets and fertilizes the egg. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. To nourish and protect the developing fetus. The uterus is where the fertilized egg implants and the fetus develops. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. To provide nutrients and oxygen to the fetus. The placenta is a temporary organ that facilitates the exchange of substances between the mother and fetus. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

C. 9 months. The average duration of human pregnancy is about 40 weeks or 9 months. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. Sperm. Sperm are the male reproductive cells produced in the testes. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. Testis. The testes are responsible for producing sperm and male sex hormones. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. To transport sperm from the testis to the urethra. The vas deferens is a tube that carries sperm from the epididymis to the urethra. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. To produce a fluid that nourishes and protects sperm. The prostate gland contributes to the seminal fluid, which provides nutrients and protection to sperm. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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D. To transport both urine and semen. The urethra is a common passage for both urine and semen in males. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. Ova (eggs). Ova are the female reproductive cells produced in the ovaries. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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D. Ovary. The ovaries are responsible for producing eggs (ova) and female sex hormones. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. To transport eggs from the ovary to the uterus. The fallopian tubes are where fertilization takes place. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. Uterus. The uterus is where the fertilized egg implants and the fetus develops. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. To receive sperm during sexual intercourse. The vagina is the passage that connects the uterus to the external genitalia. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. Menstruation. Menstruation is the shedding of the uterine lining when fertilization does not occur. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. 28 days. The average menstrual cycle is about 28 days long. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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A. Ovulation. Ovulation is the release of a mature egg from the ovary. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. Estrogen. Estrogen is the primary female sex hormone responsible for the development of secondary sexual characteristics. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. To prepare the uterus for pregnancy. Progesterone helps thicken the uterine lining in preparation for implantation. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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A. Contraception. Contraception refers to the methods used to prevent pregnancy. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. Condom. Condoms are a barrier method that physically prevents sperm from reaching the egg. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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A. By preventing ovulation. Oral contraceptive pills contain hormones that prevent the release of an egg from the ovary. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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C. An intrauterine device (IUD). The Copper-T is an IUD that prevents implantation of the fertilized egg. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

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B. Vasectomy. Vasectomy is a surgical procedure that blocks or cuts the vas deferens, preventing the release of sperm. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

B. To provide information about reproductive health and responsible sexual behavior. Sex education aims to equip adolescents with knowledge to make informed decisions about their sexual health. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

D. All of the above. STIs can have serious health consequences, including infertility, other health problems, and transmission to a fetus. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

D. Malaria. Malaria is a mosquito-borne disease, not a sexually transmitted infection. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

A. To ensure the health of the mother and the developing fetus. Prenatal care involves regular checkups and monitoring to promote a healthy pregnancy. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

D. All of the above. Family planning involves informed choices about reproduction to promote the health and well-being of individuals and families. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

B. Abortion. Abortion is the medical or surgical termination of a pregnancy. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

D. All of the above. Unsafe abortions can lead to severe complications, including infection, excessive bleeding, and even death. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

C. Adolescents need information and support to make healthy choices about their reproductive health. Addressing adolescent reproductive health is crucial for preventing unwanted pregnancies and STIs. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

A. To provide information and support to individuals and couples regarding reproductive health issues. Counseling can help individuals make informed decisions about their reproductive health. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Accepted Answer

B. To promote the health and well-being of individuals and families by providing access to information and services related to reproduction and sexual health. Reproductive health programs aim to empower individuals to make informed choices about their reproductive lives. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Table of Contents

I. Introduction to Reproduction

Importance of Reproduction

The Basis of Reproduction

Question 10: Where are the genes located within a cell?A. CytoplasmB. Cell membraneC. ChromosomesD. MitochondriaShow ExplanationCorrect Answer: C. Chromosomes. Chromosomes are structures within the cell nucleus that contain the DNA. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

The Importance of Variation

II. Modes of Reproduction in Single Organisms

Fission

Fragmentation

Regeneration

Question 25: Which of these organisms is known for its ability to regenerate?A. SpirogyraB. AmoebaC. PlanariaD. YeastShow ExplanationCorrect Answer: C. Planaria. Planaria is a flatworm known for its remarkable regenerative abilities. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Budding

Vegetative Propagation

Question 34: Which of these is NOT a method of vegetative propagation?A. LayeringB. GraftingC. BuddingD. PollinationShow ExplanationCorrect Answer: D. Pollination. Pollination is a process associated with sexual reproduction in plants. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Spore Formation

Question 40: How are spores dispersed?A. Through waterB. Through the airC. By animalsD. All of the aboveShow ExplanationCorrect Answer: D. All of the above. Spores can be dispersed through various means, including water, air, and animals. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

III. Sexual Reproduction

The Significance of Sexual Reproduction

Why the Sexual Mode of Reproduction?

Sexual Reproduction in Flowering Plants

Question 57: What develops from the ovule after fertilization?A. FruitB. SeedC. StemD. LeafShow ExplanationCorrect Answer: B. Seed. The ovule develops into a seed, which contains the embryo and stored food. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 61: What is the name of the future shoot in an embryo?A. RadicleB. PlumuleC. CotyledonD. EndospermShow ExplanationCorrect Answer: B. Plumule. The plumule is the embryonic shoot that develops into the stem and leaves. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 63: What is the term for a flower that contains both stamens and pistils?A. UnisexualB. BisexualC. AsexualD. SterileShow ExplanationCorrect Answer: B. Bisexual. A bisexual flower has both male and female reproductive organs. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Reproduction in Human Beings

Question 10: Where are the genes located within a cell?
A. CytoplasmB. Cell membraneC. ChromosomesD. Mitochondria
Show Explanation
Correct Answer: C. Chromosomes. Chromosomes are structures within the cell nucleus that contain the DNA. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 25: Which of these organisms is known for its ability to regenerate?
A. SpirogyraB. AmoebaC. PlanariaD. Yeast
Show Explanation
Correct Answer: C. Planaria. Planaria is a flatworm known for its remarkable regenerative abilities. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 34: Which of these is NOT a method of vegetative propagation?
A. LayeringB. GraftingC. BuddingD. Pollination
Show Explanation
Correct Answer: D. Pollination. Pollination is a process associated with sexual reproduction in plants. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 57: What develops from the ovule after fertilization?
A. FruitB. SeedC. StemD. Leaf
Show Explanation
Correct Answer: B. Seed. The ovule develops into a seed, which contains the embryo and stored food. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 61: What is the name of the future shoot in an embryo?
A. RadicleB. PlumuleC. CotyledonD. Endosperm
Show Explanation
Correct Answer: B. Plumule. The plumule is the embryonic shoot that develops into the stem and leaves. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)

Question 63: What is the term for a flower that contains both stamens and pistils?
A. UnisexualB. BisexualC. AsexualD. Sterile
Show Explanation
Correct Answer: B. Bisexual. A bisexual flower has both male and female reproductive organs. ( How Do Organisms Reproduce Class 10 MCQ by Top100MCQ.com)