Home › ICSE Class 9 › biology › Respiration in Plants › Gaseous exchange in plant leaves occurs mainly t…
Gaseous exchange in plant leaves occurs mainly through
APhloem sieve tubes in the midrib
BHydathodes at the leaf margins
CCuticle covering the upper epidermis
DStomata bordered by guard cells
Answer & Solution
Correct answer: D. Stomata bordered by guard cells
1. The chapter on gaseous exchange names stomata as the main route.
2. Each stoma is bordered by two guard cells.
3. Oxygen and CO2 enter and leave by diffusion through these openings.
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_
Related questions
Yeast cells used in bread-making make the dough rise becauseWhich substance is the final electron acceptor in aerobic respiration?Which part of plants respires most actively?During germination seeds respire actively. The dry matter of the seedling at firstAnaerobic respiration releases less energy than aerobic becauseWhich experiment shows that CO2 is released during respiration?Which experiment shows that respiration in seeds produces heat?In woody stems gaseous exchange takes place through