Question:
Differentiate between internal fertilization and external fertilization.
Answer:
Internal Fertilizatio :-Fusion of male and female gametes inside female body. High chances of survival of offspring, so less number of ova/eggs are produced. Cows. Hens, Human beings (mostly mammals)External Fertilization:-Fusion of male and female gametes outside female body. Low chances of survival, large number of eggs are produced. Examples: Fish. frog, starfish