Chapter 5: Reproduction in Animals

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Q
Reproduction in Animals

Question:

Indicate whether the following statements are True (T) or False (F).

(a) Oviparous animals give birth to young ones.

(b) Each sperm is a single cell.

(c) External fertilisation takes place in frog.

(d) A new human individual develops from a cell called gamete.

(e) Egg laid after fertilisation is made up of a single cell.

(f) Amoeba reproduces by budding.

(g) Fertilisation is necessary even in asexual reproduction.

(h) Binary fission is a method of asexual reproduction.

(i) A zygote is formed as a result of fertilisation.

(j) An embryo is made up of a single cell.

Answer:

(a) Oviparous animals give birth to young ones.   False (F)

Correct answer: The animals which give birth to young ones are called viviparous. Example: Humans. The animals which lay eggs from which young ones are hatched, later on, are called oviparous. Example: birds.

(b) Each sperm is a single cell. True (T)

(c) External fertilisation takes place in frog. True (T)

(d) A new human individual develops from a cell called gamete.  False (F)

Correct answer: The human develops from the combination of two gametes called the zygote.

(e) Egg laid after fertilisation is made up of a single cell.  True (T)

(f) Amoeba reproduces by budding. False (F)

Correct answer: Amoeba reproduces by the process of binary fission while hydra reproduces by budding.

(g) Fertilisation is necessary even in asexual reproduction. False (F)

Correct answer: No, in asexual reproduction, an exact copies of the parents are produced without fertilisation.

(h) Binary fission is a method of asexual reproduction.  True (T)

(i) A zygote is formed as a result of fertilisation. True (T)

(j) An embryo is made up of a single cell. False (F)

Correct answer: The zygote divides repeatedly to form a ball of hundreds of cells called an embryo.


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