Amphibians Are Not Amniotes Because

Multiple Choice

Amphibians are not amniotes because

A) the whole zygote contributes to the structures of the embryo.
B) the zygote does not produce numerous extra-embryonic membranes.
C) fertilisation in amphibians is internal.
D) the whole zygote contributes to the structures of the embryo and the zygote does not produce numerous extra-embryonic membranes.
E) the whole zygote contributes to the structures of the embryo and fertilisation in amphibians is internal.