An ommatidium is best defined as a: __________?
Correct answer: C. Functional unit of the compound eye
- A. Subdivision of the ventral nerve cord
- B. Mechanoreceptor used for proprioception
- C. Functional unit of the compound eye
- D. Ventral lobe of the insect's brain
Explanation
An ommatidium is one optical unit of an insect compound eye, containing photoreceptor cells that contribute to image formation. The other options describe nervous-system structures or sensory receptors unrelated to the compound-eye unit.
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