What is fertilization?
Fertilization is the fusion of male and female gametes to form a zygote.
What is the number of distinct stages in a frog's metamorphosis?
3
Define asexual reproduction.
Asexual reproduction is the mode of reproduction in which only a single parent is involved.
Define sexual reproduction.
Reproduction in which a male and female are involved is called sexual reproduction. In this mode of reproduction the male and female gametes fuse together.