Question

Which of the following is incorrect w.r.t. structure/gland of cockroach and its total number in body?

• A. Collateral glands in female cockroach–2
• B. Malpighian tubules–100–150
• C. Spiracles–10
• D. Ommatidia in each compound eye 2000

Answer 1

The correct option is C Spiracles–10

Spiracles are 20 in number in cockroach.
Collateral glands in female cockroach are 2 in number.
Malpighian tubules are 100–150 in number.
Ommatidia in each compound eye are 2000 in number.

So, the correct option is spiracles-10.