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Reproduction in Animals (Class - VIII)

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Which of the following is/are not a part of the male reproductive system?

  1. Epididymis

  2. Seminal vesicles

  3. Testes

  4. Scrotal sacs

  5. Oesophagus


Correct Option: E
Explanation:

This is the correct option. Oesophagus is not a part of the male reproductive system. It is a part of the digestive system.

Which of the following organisms do(es) not reproduce by the method in which a small part of the body of the parent organism grows out as a bud that then detaches and becomes a new organism?

  1. Hydra

  2. Sea-anemones

  3. Amoeba

  4. Sponges

  5. Corals


Correct Option: C
Explanation:

This is the correct option. Amoeba does not reproduce by this method.

Which of the following animals does not show metamorphosis?

  1. Housefly

  2. Mosquito

  3. Silk moth

  4. Frog

  5. Fish


Correct Option: E
Explanation:

This is the correct option. Fish does not show metamorphosis.

Which of the following parts occur(s) in the reproductive system of flowering plants as well as that of females?

  1. Anther

  2. Sperm ducts

  3. Ovary

  4. Style

  5. Stigma


Correct Option: C
Explanation:

This is the correct option. Ovary occurs in the reproductive system of flowering plants as well as that of females.

Which of the following statements is/are false?

a. The offsprings formed as a result of sexual reproduction show more variations because genetic material comes from two parents of the same species. b. Reproduction is essential for living organisms in order to continue the species forever. c. Fertilisation is necessary in asexual reproduction.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c


Correct Option: E
Explanation:

This is the correct option as this statement is false.

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

  1. Ovary

  2. Uterus

  3. Oviduct

  4. Vagina

  5. Penis


Correct Option: E
Explanation:

This is the correct option. Penis is not a part of the female reproductive system.

In which of the following animals does the embryo grow inside the eggs that the mother has laid?

  1. Hen

  2. Cat

  3. Dog

  4. Human beings

  5. Cow


Correct Option: A
Explanation:

This is the correct option. In a hen, the embryo grows inside the eggs that the mother has laid.

Which of the following is not a property of asexual reproduction?

  1. It is the simplest method of reproduction.

  2. No sex cells are involved.

  3. Only one parent is needed to produce a new organism.

  4. The young one produced is not an exact copy of its parents.

  5. In this, a part of the parent organism separates off and grows into a new organism.


Correct Option: D
Explanation:

This is the correct option as this is not a property of asexual reproduction.

________ carries genes and transmits the characteristics of parents to the offsprings.

  1. Cytoplasm

  2. Chromosome

  3. Cell membrane

  4. Mitochondria

  5. Large vacuole


Correct Option: B
Explanation:

 Chromosomes carry genes and transmit the characteristics of parents to the offsprings.

___________ carries the sperms to an organ called penis.

  1. Oviduct

  2. Epididymis

  3. Urethra

  4. Uterus

  5. Scrotal sac


Correct Option: C
Explanation:

This is the correct option. Urethra carries the sperms to an organ called penis.

Which of the following is/are multicellular?

a. Embryo b. Foetus c. Zygote

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c


Correct Option: B
Explanation:

This is the correct option. Embryo and foetus are multicellular.

Which of the following statements is/are false?

a. The fusion of a sperm with an egg to form a zygote during sexual reproduction is called fertilisation. b. The ovum has a head, a middle piece and a tail. c. All multicellular animals start their life from a single cell called zygote.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c


Correct Option: C
Explanation:

This is the correct option as this statement is false. 

IVF technique is useful for those couples that

  1. can produce sperms but no eggs

  2. cannot produce eggs and sperms and cannot fertilise due to blocked oviducts

  3. cannot produce sperms but can produce eggs

  4. cannot produce eggs and sperms but can fertilise due to open oviducts

  5. can produce sperms and eggs but fertilisation cannot take place due to blocked oviducts.


Correct Option: E
Explanation:

IVF technique is useful for those couples that can produce sperms and eggs.

Match the following:

 
a. Sperm 1. It is the female gamete in animals.
b. Zygote 2. It is the new cell that is formed by the fusion of a male gamete and a female gamete.
c. Egg 3. It is the male gamete in animals.
  1. a - 3, b - 2, c - 1

  2. a - 3, b - 1, c - 2

  3. a - 1, b - 3, c - 2

  4. a - 2, b - 3, c - 1

  5. a - 1, b - 2, c - 3


Correct Option: A
Explanation:

Sperm is the male gamete in animals. Zygote is the new cell that is formed by the fusion of male and female gametes. Egg is the female gamete in animals.

Which of the following statements is/are false?

a. Larva is an immature form of an animal formed by the hatching of its eggs. b. Those animals that lay eggs from which young ones are hatched later on are called oviparous animals. c. Metamorphosis changes amphibian tadpole into an aquatic frog.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c


Correct Option: E
Explanation:

This is the correct option as this statement is false. 

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