2007-01-20 23:52:27 · 8 answers · asked by oli 2 in Science & Mathematics ➔ Biology
In plant leaves stomata help with the exchange of oxygen and carbon dioxide, as well as the loss of water vapor in transpiration. Normally stomata open when the light strikes the leaf in the morning and close during the night.
2007-01-21 01:29:40 · answer #1 · answered by khatib 3 · 0⤊ 0⤋
In sunlight,stomata pores open.It allows carbon dioxide enter the leaf for photosynthesis to take place.It also allows the oxygen( which is produced as a by-product while respiration) to escape into the air.Stomata also maintains the concentration of water in the leaf.If there is to much water in the leaf,the stomata pores open so that some of the water can leave from the leaf.This is how stomata helps in gas exchange.
2007-01-21 01:23:52 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Stomata Gas Exchange
2016-12-17 12:19:00 · answer #3 · answered by mcclish 4 · 0⤊ 0⤋
Plants use stomata to allow gases to exchange and to allow water to enter and exit.
Gases can only be exchanged when the stomata is open.
They are OPEN during the day (more photosynthesis occurring).
They CLOSE during the night.
Stomata are normally found on the underside of the leaf. This is so that the water contained in the leaf does not get evaporated.
Stomata allow carbon dioxide and oxygen exchange while preventing liquid water from flooding the air spaces inside of the leaf.
2007-01-21 00:04:29 · answer #4 · answered by graduate 2 · 1⤊ 0⤋
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The stomatal cells are present in the leaves of the cells. They consist of an opening known as the stomatal pore that are surrounded by 2 guard cells. These guards cells are thick in the center and thin on the outside. They control the opening and closing of the cell. When the cell is full of water these guard cells swell up and therefore causing the pore to be exposed. This causes water to evaporate, and thus excess water is expelled from the cell. So the stomata regulates the amount of water inside the cell. This is known as transpiration. The process of transpiration cools the plant and regulates its temperature. The process also causes a suction or vacuum (pull). this suction force due to transpiration is the main factor in lifting water and dissolved mineral salts up the plant from the roots to the leaves. This suction force due to transpiration is the main factor in lifting water and dissolved mineral salts up the plant from the roots to the leaves. The water and minerals is used in the process of photosynthesis. The stomata also plays an imporatant role in the exchange of gases. Carbon Dioxide is absorbed and Oxygen is removed. CO2 is necessary for photosynthesis whereas O2 is waste product.
2016-04-03 03:45:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋
stomata are actually modified cells of the epidermis which are usually found on the underside of the leaf as the photosynthesis takes place in the leaf and if the stomata opens in direct sunlight the water in the plant will simply evaporate.
also the stomata opens only in daytime and it continuosly lets in and out carbon di oxide and water for photsynthesis ans respiration.
2007-01-21 02:48:26 · answer #6 · answered by SadGirl$ 2 · 0⤊ 0⤋
hello sir stomata r certtain pores found in leaf which is enclosed b/w 2 kidney shaped pouch which helps in transpiration and various exchange gases byeeeeeeeeeeeeee
2007-01-21 00:37:56 · answer #7 · answered by harjas s 1 · 0⤊ 0⤋
it release gas and it is found in the back site of the leave
2007-01-21 00:00:08 · answer #8 · answered by I am sex lover 1 · 0⤊ 0⤋