Large amount of water are transpired to the atmosphere making the situation for fresh water worse.But it is necessary for the health development of the plant .It causes the sap to move and causes cooling in plant.So transpiration is necessary evil.
At any one time, the stomata may prevent water vapor from escaping the cell by remaining closed, or allow carbon dioxide to enter the cell by opening. Both are H2O and CO2 are vital for photosynthesis, but the stomata controls their presence in the cell.
Stomata
Stomata
Stoma (plural stomata), they are the pores used for gas exchange.
Leaves have small openings called stomata on the underside of the blade. Stomata function in gas exchange.
These are known as stomata - pronounced stoh-muh-tuh ; the singular form is stoma.The are generally found on the underside of the leaves and sometimes along the stems; theyallow for gaseous exchange between the leaf and the atmosphere. Carbon dioxide in and water vapour and oxygen out (transpiration).They are normally on the underside of leaves as the waxy cuticle covers the upper epidermis; strangely some plants that are grown in tissue culture have stomata on both leaf surfaces, as a cuticle does not develop until the tissue culture plantlets are exposed to an open environment (and ultraviolet light).Plants growing in arid areas have fewer stomata to reduce transpiration where as plants in tropical areas have large or many stomata to take advanatge of the ideal growing conditions.
Stomata
Water transpiration means water movement through a plant. As the plant opens stomata to release carbon dioxide, some water escapes too. This cools the plants and causes moisture in the atmosphere.
A necessary evil means that friction has advantages as well as disadvantages so it called as necessary evil. Advantages of friction areits helps us to walkto writedriving car, etc,
stomata :) i think...
Stomata
friction is called a necessary evil because we cannot completly avoid it an actually it is used in many cases.
Because they were black and people were reassest
television "a necessary evil
Friction is called a necessary evil because we cannot completly avoid it an actually it is used in many cases.
Although not necessary, the stomata during gaseous exchange also favour transpiration and provide passage to the microorganisms.
They are called stomata, openings or pores in the epidermis of leaves.
It is called the stomata.