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← Nature & AnimalsWhich developmental constraint primarily hinders complete limb regeneration after injury in adult insects post-metamorphosis?
A)Reduced imaginal disc mitotic activity✓
B)Disrupted hormonal signaling cascades
C)Sclerotized exoskeleton rigidity
D)Diminished hemolymph nutrient transport
💡 Explanation
After metamorphosis, imaginal disc cell division slows drastically because the growth and differentiation pressures diminish, limiting ability to regenerate lost limb structure by mitosis after injury or localized damage. Therefore, reduced mitotic activity hinders precise regeneration, unlike hormone disruptions, exoskeleton or nutrient issues, which have separate mechanisms acting by causing death stages.
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