They shut because with the stomata open it is too drafty and the plant can't get to sleep.
for sex reasons
Stomata do not occur - during the night or day. Stomata are physical features of leaves: they are there from when the leaf is created to when it dies.
At night, the leaves of C3 plants close their stomata and wait until the sunlight. For CAM plants, this is when the plants open their stomata and allow the carbon dioxide to come in.
To stop water loss from the plant. In the day light photosynthesis is taking place and carbon dioxide needs to be admitted into the stomata for this process. At night, no light, so plants, who lose water all day long, as it is replaced by the roots, shut the no longer needed stomata to conserve water.
The stomata are openings in plant leaves through which gasses pass in and out. During the day carbon dioxide passes from the air through the stomata to the leaves and oxygen, produced by the leaf, passes back out through them. At night plants yield up small amounts of carbon dioxide through the stomata.
Stomata are shut at night to conserve water. When there is no light, plants cannot fix carbon dioxide. Stomata are usually open to allow entrance of carbon dioxide. A side effect is that water is lost from the leaves.There is an exception to this, however. CAM plants such as cacti and succulents open the stomata at night, store carbon dioxide as acids, and close them during the day to prevent dessication from harsh desert conditions.
Stomata
stomata which are tiny spots on the underside of the leaf
The basic function of stomata in leaves is to allow the exchange of gases with the atmosphere. Stomata also play role in controlling rate of transpiration.
The basic function of stomata in leaves is to allow the exchange of gases with the atmosphere. Stomata also play role in controlling rate of transpiration.
The tiny holes in leaves through which carbon dioxide enters are called stomata. Stomata are small pores located on the surface of leaves that open and close to allow for gas exchange, including the intake of carbon dioxide for photosynthesis.
No, humans do not have stomata. Stomata are microscopic pores found on the surface of plant leaves and stems that are used for gas exchange and transpiration. Humans have lungs for gas exchange and do not require stomata for this purpose.