AP BIOLOGY

Detailed explanation-1: -Internal fertilization has the advantage of protecting the fertilized egg from dehydration on land. The embryo is isolated within the female, which limits predation on the young. Internal fertilization also enhances the fertilization of eggs by a specific male.

Detailed explanation-2: -When a sperm fertilizes an egg within the female, it is known as internal fertilization. The advantages of internal fertilization are that the fertilized egg is protected from predators and harsh environments, thus ending in higher chances of survival. Also, there is a lesser chance of desiccation of gametes.

Detailed explanation-3: -Advantages of Internal Fertilization Chances of fusion of gametes are more. The probability of successful fertilization is increased. The mates are selective. The chances of dehydration of gametes decreases.

Detailed explanation-4: -Also, it is easier to find mates as the gametes just need to be released and can drift away with wind or water. This results in greater genetic variation. The disadvantages however, are that there is reduced chance of survival from predators and harsh environments.