Question

In which set of organisms does external fertilization 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

External fertilization is the fertilization where the male and female gametes fertilizes outside the female body. The gametes are released in large quantity to increase the chance of survival and fertilization.

In amphibians, the ovum is released in water by female and the male releases large number of sperms in the water out of which one fertilizes the egg or ovum. In algae, the microgamete and macrogamete fuses outside the body in water.

So, the correct answer is option C.