. In human beings, the correct sequence of events during reproduction is
(a) gamete formation, fertilisation, zygote, embryo
(b) embryo, zygote, fertilisation, gamete formation
(c) fertilisation, gamete formation, embryo, zygote
(d) gamete formation, fertilisation, embryo, zygote
After fertilisation, the resulting cell which gives rise to a new
individual is the
(a) embryo (c) foetus
(b) ovum (d) zygote
Aquatic animals in which fertilisation occurs in water are said
to be:
(a) viviparous without fertilisation.
(b) oviparous with external fertilisation.
(c) viviparous with internal fertilisation.
In human beings, after fertilisation, the structure which gets embedded in the wall of uterus is
(a) ovum (c) foetus
(b) embryo (d) zygote
Which of the following statements about reproduction in humans is correct?
(a) Fertilisation takes place externally.
(b) Fertilisation takes place in the testes.
(c) During fertilisation egg moves towards the sperm.
(d) Fertilisation takes place in the human female.
Reproduction by budding takes place in
(a) hydra (c) paramecium
(b) amoeba (d) bacteria
Animals exhibiting external fertilisation produce a large number of gametes. Pick the appropriate reason from the following.
(a) The animals are small in size and want to produce more offsprings.
(b) Food is available in plenty in water.
(c) To ensure better chance of fertilisation.
(d) Water promotes production of large number of gametes.
In the list of animals given below, hen is the odd one out.
human being, cow, dog, hen
The reason for this is
(a) it undergoes internal fertilisation.
(b) it is oviparous.
(c) it is viviparous.
(d) it undergoes external fertilisation
In humans, the development of fertilised egg takes place in the
(a) ovary (c) oviduct
(b) testis (d) uterus
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