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Animal Kingdom
Phylum Arthropoda: Compound Eye
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- of Animal Kingdom
- 0.81%
Concepts tested
- Ommatidia of compound eye
All Questions
2003 AIPMT 1 question
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Ommatidia serve the purpose of photoreception in : -Ommatidia are the visual units of the compound eyes of arthropods such as insects and crustaceans.
Each compound eye of a cockroach has about 2000 hexagonal ommatidia. Each ommatidium has its own lens (cornea), crystalline cone and photosensitive rhabdome, and forms a part of the image.
This produces mosaic vision, which is very sensitive to movement but less sharp.
Frogs and humans have camera-type eyes with a single lens and retina; the sunflower has no eyes.
So ommatidia serve the purpose of photoreception in the cockroach.