Question

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.

Answer 1

The correct option is C To ensure better chance of fertilisation.

• Animals in which fusion of male and the female gametes occurs in an external media, outside the female body is called external fertilisation.
• Animals exhibiting this type of fertilisation release a large number of gametes as many of them are carried away by moving water, wind, rain and many are even eaten by other animals.
• Therefore, production of a large number of gametes is necessary to ensure a better chance of fertilisation.