How do Organisms Reproduce (Class 10 Science)

Reproduction is essential for the continuation of species. Understanding both asexual and sexual reproduction helps us comprehend how life perpetuates itse

How do Organisms Reproduce (Class 10 Science)

Reproduction is essential for the continuation of species. Understanding both asexual and sexual reproduction helps us comprehend how life perpetuates itse

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TL;DR: Reproduction is essential for the continuation of species. Understanding both asexual and sexual reproduction helps us comprehend how life perpetuates…

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Reproduction is essential for the continuation of species. Understanding both asexual and sexual reproduction helps us comprehend how life perpetuates itse

How do Organisms Reproduce MCQs with Answers & Explanations

Q1. What are the two main modes of reproduction?

  1. Mitotic and meiotic
  2. Vegetative and gametic
  3. Asexual and sexual ✓ (correct)
  4. Binary and unary

Explanation: Asexual reproduction involves one parent and produces genetically identical offspring, while sexual reproduction involves two parents and produces genetically diverse offspring.

Q2. Which type of reproduction produces genetically identical offspring?

  1. Pollination
  2. Fertilization
  3. Sexual reproduction
  4. Asexual reproduction ✓ (correct)

Explanation: Asexual reproduction produces clones because only one parent is involved and no genetic recombination occurs.

Q3. What is budding in organisms like Hydra?

  1. A type of asexual reproduction where a bud develops into a new organism ✓ (correct)
  2. A type of sexual reproduction
  3. Division of nucleus
  4. Formation of spores

Explanation: Budding is an asexual reproduction method where a small outgrowth develops into a new organism, genetically identical to parent.

Q4. What is fragmentation?

  1. Pollination
  2. Breaking of organism into fragments that develop into new organisms ✓ (correct)
  3. Formation of seeds
  4. A type of sexual reproduction

Explanation: Fragmentation is asexual reproduction where an organism breaks into pieces, each developing into a complete new organism.

Q5. What are gametes?

  1. Any type of cell
  2. Mitochondria
  3. Sex cells (sperm and egg) that fuse during fertilization ✓ (correct)
  4. Body cells

Explanation: Gametes are specialized reproductive cells with half the chromosome number, produced by meiosis for sexual reproduction.

Q6. What is the process of pollen grain landing on the stigma called?

  1. Fertilization
  2. Germination
  3. Seed formation
  4. Pollination ✓ (correct)

Explanation: Pollination is the transfer of pollen from the anther to the stigma, essential for plant sexual reproduction.

Q7. What is vegetative propagation in plants?

  1. Asexual reproduction using parts like roots, stems, or leaves ✓ (correct)
  2. Reproduction using seeds
  3. Sexual reproduction
  4. Pollination

Explanation: Vegetative propagation is asexual reproduction using vegetative parts of plants to produce new genetically identical plants.

Q8. What is the male gametophyte in plants?

  1. Seed
  2. Pollen grain ✓ (correct)
  3. Ovule
  4. Flower

Explanation: The pollen grain is the male gametophyte that contains male gametes needed for plant fertilization.

Q9. What happens after fertilization in flowers?

  1. Leaves fall
  2. Flower withers
  3. Ovule develops into seed and ovary becomes fruit ✓ (correct)
  4. Plant dies

Explanation: After fertilization, the ovule develops into a seed containing the embryo, and the ovary develops into a fruit.

Q10. What is a zygote?

  1. An egg cell
  2. A sperm cell
  3. A pollen grain
  4. The diploid cell formed by fusion of sperm and egg ✓ (correct)

Explanation: A zygote is the diploid cell resulting from fertilization, containing genetic material from both parents.

Frequently Asked Questions

What is the difference between pollination and fertilization?

Pollination is the transfer of pollen from anther to stigma (mechanical process), while fertilization is the fusion of male and female gametes to form a zygote (biological process).

How do plants like strawberries and potatoes reproduce without seeds?

They use vegetative propagation through runners (strawberries) and tubers (potatoes). These asexual methods produce genetically identical plants clones of the parent.

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