stomata
Noun
The word is derived from stoma
Meaning
of Stoma
Source: Webster's dictionarySynonyms
Examples
At night, or when the plant is short of water, the stomata close and the CAM mechanism is used to store CO 2 produced by respiration for use later in photosynthesis.
In full CAM, the stomata open only at night, when temperatures and water loss are lowest.
This is an important role where water supply is not constant, and indeed stomata appear to have evolved before tracheids, being present in the non-vascular hornworts.
CAM-cycling is a less efficient system whereby stomata open in the day, just as in plants using the C 3 mechanism.
Early in their evolutionary history, the ancestors of modern cacti (other than one group of Pereskia species) developed stomata on their stems and began to delay developing bark.
Lack of phosphorus may interfere with the normal opening of the plant leaf stomata, resulting in plant temperatures 10 percent higher than normal.