Question

In gradual metamorphosis the young is known as:

• A. Nymph
• B. Naid
• C. Stadium
• D. Crawler

Hint:

Nymphs develop wing pads that grow larger with each molt until reaching adult form.

Answer 1

The Correct Option is A

Gradual metamorphosis (Hemimetabolous):
Young called nymphs
Resemble adults but lack wings
Examples: Grasshoppers, cockroaches
Other terms:
Naid: Juvenile annelids
Stadium: Growth stage between molts
Crawler: Mobile stage of scale insects

Answer 2

Elimination approach:
"Naid" refers specifically to the aquatic juvenile stage of certain insect orders such as dragonflies and mayflies, not to gradual metamorphosis in general, so it does not fit here. "Stadium" is simply the generic term for any developmental interval between two successive moults, used across all types of metamorphosis, and is not restricted to the gradual (hemimetabolous) type. "Crawler" describes the active, dispersing first instar specific to scale insects, a very narrow usage.
In gradual (hemimetabolous) metamorphosis, seen in insects such as grasshoppers, cockroaches and true bugs, the immature stages resemble miniature, wingless versions of the adult and are specifically termed nymphs, distinguishing them from the larvae of complete metamorphosis.
Ruling out the narrower or generic terms leaves nymph as the correct, specific answer.