Question:
This part of ommatidium of cockroach is a refractive region
This part of ommatidium of cockroach is a refractive region
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The Crystalline Cone, formed by the cone cells, acts to focus light rays onto the rhabdom (which is formed by the retinula cells) below.
Updated On: Oct 27, 2025
- Crystalline cone
- Vitrellar cells
- Cornea
- Retinulae
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The Correct Option is A
Solution and Explanation
Concept: The ommatidium is the single unit of an insect's compound eye, split into a light-focusing part and a light-sensing part.
Explanation: The dioptric (light-focusing/refractive) apparatus consists of the cornea (lens) and the **crystalline cone**. The retinulae cells contain the light-sensitive pigment.
Explanation: The dioptric (light-focusing/refractive) apparatus consists of the cornea (lens) and the **crystalline cone**. The retinulae cells contain the light-sensitive pigment.
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