When are the stomata of leaves usually open?

Answer 1

Depending on the environment of the plant, stomata will open and close at different times. In hot, dry environments stomata will open around dusk and dawn to minimise water loss. In Wet environments stomata will open during the day as needed

Answer 2

The stomata opens only when there is enough water in the plant to allow photosynthesize to proceed. The stomata are two cells that lie against each other, but as soon as water enters them, they begin to inflate. Due to the bean shape of the stomata the ends will still touch by the middle will be the open part to allow carbon dioxide to enter and oxygen and water vapour to leave.

Answer 3

In plants that use the Calvin cycle, the stomata is open during the day while the leaf is photosynthesizing to bring in Carbon Dioxide. However, the stomata will close if it is windy, there is low humidity, or it the sun light becomes too intense to prevent water loss.

C4 plants open their stomata anytime conditions are right. Since these types of plants grow in hot arid climates, C4 plants usually open their stomata at night.

Answer 4

Stomata close in the daytime and open during the night in order to keep water loss to a minimum.

Answer 5

well according to my knowledge the stoma opens and closes when the gueard cells make it

Answer 6

at night so the plant wont lose as much water vapor.

Answer 7

In the daytime.