Why does external fertilization typically occur much more often in aquatic animals than in terrestrial animals?
A)The gametes are hydrophobic,so they must be suspended in water to avoid clumping.
B)The gametes must be produced in large numbers,which can occur only in aquatic environments.
C)The gametes must be kept wet to avoid desiccation.
D)All of the above answers apply.
E)None of the above answers apply.

Question

Quizplus · Accepted Answer

External fertilization requires the gametes to be released into the environment, usually in water, where they must be kept wet to avoid desiccation. This is not as much of a concern for terrestrial animals as it is for aquatic animals. Hydrophobia and the need for large numbers of gametes may be factors as well but are not the primary reason why external fertilization occurs more often in aquatic animals.

Why Does External Fertilization Typically Occur Much More Often in Aquatic