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Reproduction in Animals
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.
(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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