Question

A tadpole develops into an adult frog by the process of
a. Fertilization
b. Metamorphosis
c. Embedding
d. Budding

Answer 1

Hint: Fertilization is the process of fusion of gametes, it does not mean the developmental stage in frogs. Budding is the type of asexual reproduction, which occurs by forming the buds in the parent organisms, it also has no relation with the developmental stage in frogs.

Complete answer:
As the metamorphosis is the change that occurs in the organisms, it’s a kind of physical change that transforms an immature form of an organism to a matured form also called adult. Here a tadpole is developing into an adult frog so the correct option for this question is the metamorphosis.

> First option is fertilization, it is all about the fusion of male and female gametes and resulting in an end product that is the zygote. So it is the wrong answer because here in the question it is asking about the development of the body structure, so the option (a) is excluded.

> The third option that is Embedding, it is simply getting stuck on something. So this is also not the correct option.

> Then the fourth and last option that is budding, it is a type of asexual reproduction where the parent itself produces an identical progeny, as due to the absence of the events like meiosis and fertilization. In budding, the parent produces one or more bud-like structures, which then gets matured and does the same. But clearly, the frog does not do budding and here it talks about the development stage of frog, so this is also the wrong answer.

The correct answer to this question is the second option that is option (b) metamorphosis.

Note: Metamorphosis is the biological process which generally helps out the animal to physically develop after the birth of that animal, in these processes different changes in the body of that animal takes place, like body structure development, cell growth, and differentiation.
Some of the insects, amphibians, fishes, crustaceans, echinoderms do this process after their birth. Different animals can be differentiated based on their ability to do this process or not.