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Question
Animals exhibiting external fertilisation produce a large number of gametes. Pick the appropriate reason from the following.
Options
The animals are small in size and want to produce more offsprings
Food is available in plenty in water
To ensure better chance of fertilisation
Water promotes production of large number of gametes
Solution
To ensure better chance of fertilisation
Explanation -
A large number of gametes are released by such animals to ensure better chance of fertilisation. Since, the gametes are laid in water, many of them are carried away by moving water, wind or rain and many are eaten by other animals.Therefore, production of large number of gametes is necessary.
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