Question

The organism that undergoes internal fertilization

Answer 1

Answer:

Mammals, birds, reptiles and some type of fishes are the organisms that undergoes internal fertilization.

Answer 2

Answer:

Internal Fertilization

This occurs in most bony fish, many reptiles, some cartilaginous fish, most amphibians, two mammals, and all birds. Reptiles and insects produce leathery eggs, while birds and turtles produce eggs with high concentrations of calcium carbonate in the shell, making them hard.