alleryGaseous 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_
Keep practising Unit 3B: Photosynthesis, Respiration & Cellular Energy
Browse all Unit 3B: Photosynthesis, Respiration & Cellular Energy questions for AP Biology, or explore more Biology topics.
Related questions
Which 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 firstWhich experiment shows that CO2 is released during respiration?In woody stems gaseous exchange takes place throughWhy is respiration in plants not the same as burning?The respiratory equation in plants isCatabolic processes are those that