Plant Gas Exchange
Science: KS3, topic 1.1.24
Gas Exchange in Plants
Plants need to take in carbon dioxide so that they can photosynthesise. They also produce excess (too much) oxygen in the same process that must be released.
Stomata
- Gas exchange is mainly done through the lower surface of the leaf via small openings called stomata.
- Each stomata can be closed or opened depending on the two guard cells which flank it.
Test yourself on Plant Gas Exchange
How do plants exchange gases?
Which of these are true of gas exchange in plants?
A leaf's guard cells are damaged and stop working. What is most likely to happen to its stomata?