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← Nature & AnimalsWhich consequence results when premature degradation impairs larval prothoracicotropic hormone (PTTH) secretion?
A)Accelerated chitin synthesis suppression occurs
B)Adult cuticle formation accelerates greatly
C)Incomplete metamorphosis follows, fatally✓
D)Elevated juvenile hormone analogue titers
💡 Explanation
Incomplete metamorphosis occurs because insufficient PTTH prevents ecdysone release, impacting larval molting to pupae; therefore development arrests midway, rather than completing the life cycle due to this hormonal deficiency.
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