Question:

The term 'quiescence' in insects refers to:

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Quiescence = Immediate response to stress; development resumes with favorable conditions.
  • A genetically programmed dormancy period
  • A temporary halt in development due to unfavorable conditions
  • A period of increased metabolic activity
  • The pupal stage in holometabolous insects
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The Correct Option is B

Approach Solution - 1

Quiescence is a state where insect development is temporarily halted due to immediate unfavorable environmental conditions, such as extreme temperatures or lack of food. Unlike diapause, quiescence is not hormonally controlled and resumes once favorable conditions return.
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Approach Solution -2

Contrast with Diapause: Quiescence is often confused with diapause — the key difference is the TRIGGER and CONTROL mechanism.

Quiescence is a direct, immediate response to unfavorable conditions (cold, drought, no food) and ends as soon as conditions improve — matching option 2.

It is NOT genetically programmed or hormonally controlled (that's diapause), doesn't involve increased activity, and isn't the same as the pupal stage, which is fixed regardless of environment.
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