Question:
How many pairs of respiratory pores are found in a cockroach?
How many pairs of respiratory pores are found in a cockroach?
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Insects breathe through spiracles, not lungs. Gas exchange occurs via tracheal tubes.
Updated On: Sep 19, 2025
- 2
- 6
- 8
- 10
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The Correct Option is D
Solution and Explanation
Step 1: Cockroach Respiratory System:
Cockroaches breathe through small openings on the sides of their body called spiracles (respiratory pores). Step 2: Arrangement of Spiracles:
They are paired and arranged laterally on the thorax and abdomen. In total, there are 20 spiracles present, i.e. 10 pairs. Step 3: Function:
Spiracles are connected to a network of tracheae and tracheoles, which carry oxygen directly to body tissues without blood circulation involvement.
Step 4: Final Answer:
Cockroaches have 10 pairs of respiratory pores (spiracles).
Cockroaches breathe through small openings on the sides of their body called spiracles (respiratory pores). Step 2: Arrangement of Spiracles:
They are paired and arranged laterally on the thorax and abdomen. In total, there are 20 spiracles present, i.e. 10 pairs. Step 3: Function:
Spiracles are connected to a network of tracheae and tracheoles, which carry oxygen directly to body tissues without blood circulation involvement.
Step 4: Final Answer:
Cockroaches have 10 pairs of respiratory pores (spiracles).
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