level: 6.4 Gas exchange in the leaf of a plant
Questions and Answers List
level questions: 6.4 Gas exchange in the leaf of a plant
| Question | Answer |
|---|---|
| Adaptations for gas exchange | - Stomata, small pores in epidermis, diffusion path short - Air spaces, gases can come into contact with mesophyll cells - LSA of mesophyll cells, rapid diffusion |
| Gas exchange in plants | - CO2 needed for photosynthesis, O2 is the waste gas - O2 needed for respiration, CO2 the waste gas |
| Stomata role in gas exchange | - Stomata open to control rate of gas exchange - Close to minimise water loss - Guard cells control opening + closing |