Question

Study the following statements regarding respiratory system of cockroach and identify the correct option:
Statement-I: Cockroach possesses 10 pairs of spiracles.
Statement-II: The spiracles of cockroach are holopneustic.

• A. Both statements (I) and (II) are true
• B. Statement-I is true, but statement-II is false
• C. Statement-I is false, but statement-II is true
• D. Both statements (I) and (II) are false

Hint:

Cockroaches have 10 pairs of spiracles for respiration and exhibit a holopneustic spiracle arrangement — all functional openings.

Answer 1

The Correct Option is A

In cockroaches: - There are 10 pairs of spiracles (small openings) on the body surface, allowing for gas exchange. - The arrangement is termed holopneustic, where all spiracles are functional — a feature of cockroach respiration. Thus, both statements are correct.