A minute epidermal pore in a leaf or stem through which gases and water vapor can pass.
1 These little mouths, which are called stomates (a, Fig.
2 Second, oil can kill indirectly if it coats the plants' leaves enough to clog small openings called stomates .
3 Plants won't need to open their stomates as long to take in CO2, and hence they will pump out less water vapor.
4 Evapotranspiration happens when plants open up the tiny pores on their leaves, called stomates , to take in CO2 from the atmosphere for photosynthesis.
5 This costs the plant water; for every molecule of CO2 that enters the plant, around 180 molecules of water diffuse out of the stomates .
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