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Reproduction in Animals (Class VIII)

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In which of the following organisms a new organism grows out of the parent's body in the form of a bud?

  1. Amoeba

  2. Hydra

  3. Snake

  4. Human being

  5. Birds


Correct Option: B
Explanation:

This is the correct option. In hydra, a new organism grows out of the parent's body in the form of a bud.

Which of the following organisms produce their young ones by the method of sexual reproduction?

a. Fish b. Amoeba c. Frog d. Hydra

  1. Both a and b

  2. Both a and c

  3. Both a and d

  4. Both b and c

  5. Both b and d


Correct Option: B
Explanation:

This is the correct option. Fish and frog produce their young ones by the method of sexual reproduction.

The male gamete in animals is called sperm. Which of the following is not a property of sperm?

  1. The sperms are extremely small cells.

  2. A sperm has a head, a middle piece and a tail.

  3. A sperm is a single cell with components like nucleus, cytoplasm and cell membrane.

  4. The sperm cell has very little cytoplasm.

  5. The sperm has a thin layer of jelly called 'jelly coat'.


Correct Option: E
Explanation:

This is the correct option as this is not a property of a sperm. It is in fact the ovum that has a thin layer of jelly called 'jelly coat'.

The fertilisation that takes place inside a female's body is called internal fertilisation. In which of the following animals does internal fertilisation not take place?

  1. Rabbits

  2. Sparrows

  3. Crocodiles

  4. Frogs

  5. Silk moths


Correct Option: D
Explanation:

This is the correct option. In frogs, external fertilisation takes place.

Which of the following are the oval-shaped organs that are inside the abdominal cavity of a woman?

  1. Ovaries

  2. Oviducts

  3. Uterus

  4. Vagina

  5. Epididymis


Correct Option: A
Explanation:

This is the correct option as ovaries are the oval shaped organs that are inside the abdominal cavity of a woman. The female sex cells are made in the ovaries.

Which of the following statements is/are false?

a. Sex cells are involved in asexual reproduction whereas no sex cell is involved in sexual reproduction. b. In asexual reproduction, the offspring produced is an exact copy of the parent. c. An animal having female sex cells in its body is called a female.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: A
Explanation:

This is the correct option as this statement is false. Sex cells are involved in sexual reproduction whereas no sex cell is involved in asexual reproduction.

Which of the following animals does not show metamorphosis?

  1. Fish

  2. Frog

  3. Silk moth

  4. Butterfly

  5. Mosquito


Correct Option: A
Explanation:

This is the correct option as fish does not show metamorphosis. 

Which of the following is not a part of the female reproductive system?

  1. Ovaries

  2. Oviducts

  3. Epididymis

  4. Uterus

  5. Vagina


Correct Option: C
Explanation:

This is the correct option as epididymis is not a part of the female reproductive system. Epididymis is a part of the male reproductive system. Its function is to store the sperms temporarily.

Which of the following is a property of an embryo?

  1. An embryo is formed by the fusion of male and female gametes.

  2. An embryo is the beginning of the formation of a baby.

  3. An embryo is multicellular.

  4. An embryo is an unborn baby in the uterus in the later stages of development.

  5. In an embryo, various body features of the developing baby like hands, legs, eyes, ears, etc. can be identified.


Correct Option: C
Explanation:

This is the correct option as this is a feature of an embryo. It is multicellular.

Which of the following male sex organs make sperms?

  1. Scrotal sac

  2. Epididymis

  3. Testes

  4. Seminal vesicles

  5. Urethra


Correct Option: C
Explanation:

This is the correct option as testes make the sperms.

Which of the following animals does not lay eggs from which young ones are hatched later on?

  1. Sparrow

  2. Crow

  3. Frog

  4. Rabbit

  5. Ostrich


Correct Option: D
Explanation:

This is the correct option. Rabbit does not lay eggs from which young ones are hatched later on because it is a viviparous animal.

Which of the following male reproductive organs passes the sperms from the male's body to the female's body?

  1. Seminal vesicle

  2. Epididymis

  3. Urethra

  4. Scrotal sac

  5. Penis


Correct Option: E
Explanation:

This is the correct option as penis is the male reproductive organ that passes the sperms from the male's body to the female's body.

Which of the following statements is/are false?

a. The new organism produced by asexual reproduction is exactly identical to the parent. b. The change from caterpillar to a silk moth is an example of metamorphosis. c. In the process of budding, the parent organism splits to form two new organisms.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: E
Explanation:

This is the correct option as this statement is false. In the process of fission, the parent organism splits to form two new organisms.

Which of the following is/are not a property of viviparous animals?

a. The young one of the animal develops inside the egg. b. When the young one is fully developed, the mother gives birth due to which the alive young one comes out from the body of the mother. c. The viviparous animals do not lay eggs outside their body.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c


Correct Option: A
Explanation:

This is the correct option as this is not a property of viviparous animals. 

Which of the following organisms reproduce by the method of budding?

a. Paramecium b. Sponges c. Corals d. Sea anemones

  1. only a and b

  2. only a and c

  3. a, b and d

  4. b, c and d

  5. a, b and c


Correct Option: D
Explanation:

This is the correct option as sponges, corals and sea anemones reproduce by budding.

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