alleryIn woody stems gaseous exchange takes place through
ALenticels in the bark
BStomata of mature wood
CHydathodes of the inner cortex
DSieve tubes inside the phloem
Answer & Solution
Correct answer: A. Lenticels in the bark
1. The chapter notes that mature woody stems have a thick bark.
2. The bark contains small loose-tissue openings called lenticels.
3. These permit gas exchange between bark cells and the air.
4. So option A is correct.
_Source: Selina Concise Biology Class 9, Ch 7 Respiration in Plants (Mistral OCR'd PDF), section on gaseous exchange_
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