Question

Mention external fertilization disadvantages.

Answer 1

Disadvantages of external fertilization:

In external fertilization, eggs have less chances of fertilization. This can lead to the wastage of a large number of eggs produced during the process.

Further, there is an absence of proper parental care to the offspring, which results in a low rate of survival in the progenies.

Answer 2

Disadvantages of external fertilization:

1. if occurs only in aquatic medium.
2. A chance factor is involved requiring synchronous release of gametes nearby and absence of turbulence of water.
3. There is no protection to young ones. They are vulnerable to a number of predators.