Question

Grooves with a purely functional origin in insects is called:

• A. Sulci
• B. Membrane
• C. Pit
• D. Crack

Hint:

“Crack” in entomological terms refers to a functional rather than developmental groove on the insect exoskeleton.

Answer 1

The Correct Option is D

In insect morphology, a crack or functional groove may appear as a break or fault in the exoskeleton structure, often forming functionally (not embryologically) to allow specific flexion or segmentation.