Stomata and Functions MCQ (Multiple Choice Questions) PDF Download

Guard cells of stoma are

1. irregular in shape
2. convex in shape
3. long and cylindrical in shape
4. kidney-shaped

Leaf may absorb maximum light due to

1. strong petiole
2. strong turgor pressure in xylem
3. strong turgor pressure in mesophyll cells
4. closed stomata

Stomata guard cells perform all functions but

1. producing sugars
2. protecting the inner regions of leaf
3. regulating the amount of water lost
4. chloroplast storage

In plants closed stomata reduce due to

1. rate of transpiration only
2. amount of carbon dioxide entering in the leaf only
3. the rate of respiration
4. rate of transpiration and amount of carbon dioxide entering in leaf

Plant wilts when the leaf

1. looses its central nucleus
2. looses its central vacuoles
3. looses its turgor pressure
4. exposed to strong wind