Question

In which of the following sets of organisms, does the external fertilisation occur?

(a) Echinodermata and mosses

(b) Hemichordata and ferns

(c) Amphibians and algae

(d) Reptiles and gymnosperms

Answer 1

The correct option is: (c) Amphibians and algae

Explanation:

When fertilisation occurs outside the body of the organism. this type of gametic fusion is called external fertilisation or external syngamy. The external medium such as water is required for this type of fertilisation. Thus, in most aquatic organisms such as a majority of algae, fishes and amphibians, external fertilisation occurs.