Optogenetic method shows plant guard cells can count environmental stimuli to adapt water ...
More information: Shouguang Huang et al, Guard cells count the number of unitary cytosolic Ca 2+ signals to regulate stomatal ...
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Mitosis and cell specialisation - OCR Gateway
Carry out photosynthesis. Guard cells Open and close to control the exchange of gases – carbon dioxide, water vapour and oxygen. Phloem Sieve tubes Transport products of photosynthesis ...