Question

Given below are a few statements related to external fertilisation. Choose the correct statements.
(i) The male and female gametes are formed and released simultaneously.
(ii) Only a few gametes are released into the medium.
(iii) Water is the medium in a majority of organisms exhibiting external fertilisation.
(iv) Offspring formed as a result of external fertilisation have better chance of survival than those formed inside an organism.

• A. (iii) and (iv)
• B. (i) and (iii)
• C. (ii) and (iv)
• D. (i) and (iv)

Answer 1

The correct option is B (i) and (iii)

A large number of gametes are released into the medium to increase the chances of fertilisation. The chances of survival of offspring from external fertilisation are lesser than those of internal fertilisation as they face more risk from predators.

So, the correct answer is '(i) and (iii)'