1
Question
Lenticel : plants :: ........... : insects.
Lenticel : plants :: ........... : insects.
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Solution
The correct option is A Spiracle
Lenticels are small pores present on the surface of the stems and roots that allow the interchange of gases between active interior tissue and the surrounding air or pockets of air in the soil. Similarly, Spiracles are small pores present in the body of insects. It is an external respiratory opening. Air comes via spiracles and goes to invertebrate trachea thus allows the gaseous exchange. Therefore, as lenticels are the respiratory pores of the plants, the spiracles are the respiratory pores of the insects. Hence option B is correct.
Lenticels are small pores present on the surface of the stems and roots that allow the interchange of gases between active interior tissue and the surrounding air or pockets of air in the soil.
Similarly, Spiracles are small pores present in the body of insects. It is an external respiratory opening. Air comes via spiracles and goes to invertebrate trachea thus allows the gaseous exchange. Therefore, as lenticels are the respiratory pores of the plants, the spiracles are the respiratory pores of the insects. Hence option B is correct.
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