Question

Select the incorrect statement about external fertilisation.

• A. Organisms showing external fertilisation produce a large number of male gametes only
• B. External fertilisation is very uncertain and requires synchrony between release of male and female gametes
• C. It is replaced by internal fertilisation in higher organisms as it wastes energy and requires external medium like water.
• D. It occurs in most of the fishes and amphibians

Answer 1

The correct option is A Organisms showing external fertilisation produce a large number of male gametes only

When fertilization occurs outside the body of the organism, this type of gametic fusion is called external fertilization or external syngamy. Organisms exhibiting external fertilization produce a large number of both male and female gametes to enhance the chances of fertilization. For example, algae, fish and amphibians.

Thus, the correct answer is 'Organisms showing external fertilization produce a large number of male gametes only.'