Reproduction in Plants and Animals — GK Questions with Answers

1. How does Amoeba reproduce asexually?
   1. Budding
   2. Fission
   3. Fragmentation
   4. Spore formation
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   Answer: (B) Fission

   Amoeba reproduces through fission, splitting into two equal halves.

2. What does the first sperm fuse with to form the zygote?
   1. A polar nucleus
   2. The egg cell
   3. The anther
   4. The stigma
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   Answer: (B) The egg cell

   The first sperm fuses with the egg cell to form a diploid (2n) zygote, which goes on to build the embryo.

3. What does the ovule turn into after fertilisation?
   1. A fruit
   2. A seed
   3. A flower
   4. A leaf
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   Answer: (B) A seed

   After fertilisation, the ovule turns into a seed, while the whole ovary turns into a fruit.

4. Why do the testes sit outside the body in the scrotum?
   1. For protection
   2. They need a lower temperature
   3. To make hormones
   4. No particular reason
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   Answer: (B) They need a lower temperature

   Sperm production needs a temperature lower than the body’s own, which is why the testes sit outside.

5. What is the average length of the human menstrual cycle?
   1. 14 days
   2. 21 days
   3. 28 days
   4. 40 days
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   Answer: (C) 28 days

   The human menstrual cycle lasts about 28 days on average.

6. Which contraceptive method blocks both pregnancy and STDs 100% of the time?
   1. Condom
   2. IUD
   3. Abstinence
   4. Birth control pill
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   Answer: (C) Abstinence

   Abstinence is the only method that, by avoiding sexual contact entirely, fully blocks both pregnancy and sexually transmitted disease.

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