Which mechanism prevents fish sperm from fertilizing frog eggs?

A) Energetic barriers
B) Biological barriers
C) Prezygotic barriers
D) Ecological barriers
E) Postzygotic barriers

Prezygotic Barriers

Reproductive isolating mechanisms that occur before the fertilization of the egg, such as geographical, temporal, or behavioral differences that prevent species from mating.

Ecological Barriers

Physical, chemical, or biological factors in the environment that prevent species from dispersing to certain areas, limiting their distribution.

Biological Barriers

Structures and mechanisms that protect organisms from pathogens, toxins, and other external threats.