A) fish
B) insects
C) mammals
D) birds.
Correct Answer: B
Solution :
: In insects each compound eye is composed of about 2,000 of visual units, the simple eyes or ommatidia. Each ommatidium is composed of a cuticular lens, two corneagen cells, a crystalline cone, surrounded by four cone cells, a rhabdom, surrounded by seven retinular cells and a basement membrane. Insects also have ocelli.
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