Question

Regarding vision in cockroach, which is incorrect?

• A. Total image is formed in the compound eye
• B. Apposition image, mosaic vision
• C. Retinulae in immediately below the vitrellae and crystalline cone, surrounded by retinal pigment sheath
• D. All of these

Answer 1

The correct option is A Total image is formed in the compound eye

Cockroaches have mosaic vision. They have several small lenses in the compound eyes and each of them forms an individual image of the object. All of these images are combined in the brain where a complete image is then formed. Therefore, the total image is not formed in the compound eye but the brain.

So, the correct option is 'Total image is formed in the compound eye'.