Question

Animals exhibiting external fertilisation produce a large number of gametes. Pick the appropriate reason from the following.

विकल्प

• 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

Answer 1

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 a large number of gametes is necessary.