There are several answers to this question. I expect all of you to say guard cells. Those of you who’ve read the previous item about chlorophagy might also be tempted to say plant vacuoles – presumably of guard cells...
Tag - CCM (Carbon-concentrating mechanism)
Nigel Chaffey
An explosive mix: C4, C3, C2 and CCM
How many more variants exist amongst the 325,000 species of flowering plants (let alone all the algae and other members of the plant kingdom)?
