... Stomata are tiny openings that serve as valves that control the flow of air into the leaf. An apple- tree leaf may have 47,000 stomata per square inch on its surface while an oak-tree leaf may have over 100.000 stomata per square inch ...
... stomata. and It Is a peculiar fact that these stomata are mostly confined to the lower surface. A leaf of lilac for Instance, has about 160.000 stomata in Its lower epidermis and none on the upper. / vine leaf has 13.600 on the lower ...
... stomata, on their leaves. When the sun shines, stomata of well- watered plants swell and open, absorbing carbon dioxide and releasing water vapor. The stomata shrink at night, and also when the plant's roots are not receiving enough ...
... stomata. These stomata open and close depending on light, temperature and moisture conditions. Most plants are literally held up by water. The water moving throughout the plant creates a pressure. It is this pressure that keeps plants ...
... stomata, or pores in the leaves. Stomata open up during sunny days. A large tree can lose up to several hundred gallons of water each day due to transpiration. If clouds cover the sky, the stomata tend to close, and little water is lost ...
... stomata or breathing pores of pale and green plants. They found that leaf parts that are pale have fewer or smaller. stomata than the green portions of the same leaves or of all-green leaves. They also learned that leaves which lose ...
... stomata, it is replaced by the moisture below it. In this way, a steady suction is maintained. Not all of a tree's sap turns to vapor and is evaporated by the stomata. Some, charged with elements that feed the tree which it picked up in ...
... stomata must also be open enough of the time to admit carbon dioxide. Most of these tiny openings act as small shutters Early in the morning Ihe stomata open their shutters, and in ordinary weather most shutters a r i closed by midday ...
... stomata (leaf pores) generally are open during the day and closed at night. "During Durng a period of soil drying, the stomata generally close long before visible wilting occurs, and they remain closed during a continuing drought ...
... stomata of their leaves in different stages of openness. We could do this by controlling light, because stomata gradually open in the light and close in the dark. "We learned that bean plants closed stomata remove very little ozone, and ...