Question

Complete metamorphosis occurs in
A. Moth
B. Grasshopper
C. Bed bug
D. Silver fish

Answer 1

Hint: Metamorphosis is the process which involves physical changes an organism undergoes after birth till it becomes an adult. Example larva to tadpole.

Complete Answer:
To solve this question, we must know about metamorphosis and how it takes place.
- Metamorphosis is the change in the form of an individual after birth till it becomes an adult. The moulting hormones regulate the metamorphosis. It involves growth and differentiation. It also involves change in physiology, biochemistry and behaviour. There are two types of metamorphosis.
- In complete metamorphosis there are 4 stages- egg- larva- pupa- adult. The complete metamorphosis takes place in the insects. They undergo all the four changes and the lava does not resemble the adult.
- Incomplete metamorphosis There are three stages the egg – nymph- adult. Nymph is the smaller version of adult. Example is grasshopper bugs.
- Silverfish: It is an arthropod which does not undergo any kind of metamorphosis. Only the bilateral symmetry of larvae changes to radial symmetry in adults.

Thus the correct answer is (A). Complete metamorphosis is seen in Moth.

Additional Information: Humans and other viviparous organisms do not undergo metamorphosis. The offspring are fully developed into the mother’s body so they do not need differentiation. Only the growth and development of body parts take place.

Note: The significance of metamorphosis is that it helps the juvenile and adult occupy different places in the ecosystem. This prevents the competition between the juvenile and adult. Some organisms form a hard pupa stage. This gives them extra protection in the extreme environment.