Which animal undergoes external fertilization? *

a. cat
b. cow
c. fish
d. lion

23. The following statements describe sexual reproduction. Which one is NOT? *

a. The ovary produces egg cells.
b. No sex cell is needed to form a new organism.
c. Sex cells from male and female animals are needed.
d. The embryo is soon developed as a young individual.
24. Which best defines internal fertilization? *

a. Both sex cells are released in water.
b. It is the initial phase in the sexual reproduction.
c. The fertilized egg is nourishing from its yolk.
d. The zygote is developing within the parent’s body.
25. Dogs, fish, and butterflies all undergo __________. *

a. asexual reproduction
b. external fertilization
c. internal fertilization
d. sexual reproduction​