REPRODUCTION
EMBRYONIC DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Internal Fertilization
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External Fertilization
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Internal Development
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External Devlopment
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Detailed explanation-1: -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-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: -Generally, the number of eggs laid is strictly proportional to the likelihood of mortality of the offspring. So to maximise the survival rate, frogs create a lot of gametes.