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The upper surface of a leaf is transparent because it lacks chloroplasts which carry out photosynthesis. This allows light to pass through the upper surface and reach the chloroplast-rich cells in the lower side of the leaf where photosynthesis occurs.
They are found on the upper surface of the leaf.
In most cases it is at the underside of the leaf, as it does not want sunlight to dry it up.
stomata is present on a leaf's lower surface. but in plants that float on water, stomata is present on a leaf's upper surface, and the lower surface is protected by a coating of wax.
There are about 92 stomatas on upper surface and 39 stomatas on the lower surface. In a dorsiventral leaf number of stomata is more on the lower surface hence the above answer may please be verified
Stomata in lotus plant is on the upper side of the leaves . BY:Alvir Tuazon
The lower surface of the leaf has the stomata. You can see the reason for this if you cut a leaf in half from upper side to lower side. The upper portion of the leaf consists of tightly packed cells that are full of chloroplasts for taking in light. The lower half of the leaf is made up of loosely arranged cells. This allows room for air to enter the lower part of the leaf through the stomata and contribute carbon dioxide and take away oxygen. The upper surface of the leaf is covered by the cuticle which prevents dehydration, as such the stomata cannot be located or function on the upper surface
Food is made in any cell containing chloroplasts. The greatest contribution is by the pallisade cells on the upper surface of the leaf.
Foliose lichens form a somewhat leaf-like mat due to their flattened, leafy structure. They have distinct upper and lower surfaces, with the upper surface often being a different color or texture than the lower surface.
The underside of leaves is where the 'stomata' are to be found in most (not all) plants and it is through these stomata that the gas exchange occurs. The upper surfaces of leaves are usually tough and shiny to protect the leaf and shed water. If the stomata were on the upper surface and the leaf was wet, the water would block them and impede gas exchange.
The upper surface of the leaf typically contains more chlorophyll than the lower surface. This is because the upper surface is exposed to more sunlight, which is essential for photosynthesis. Chlorophyll absorbs light energy, and having a higher concentration on the top maximizes light capture, enhancing the plant's ability to produce food. Additionally, the lower surface often has more stomata for gas exchange, which doesn't require as much chlorophyll.
Photosynthetic cells are mainly on the upper side of a leaf because they can receive more sunlight there, which is essential for photosynthesis. This positioning maximizes the absorption of sunlight for energy production and allows the plant to efficiently convert carbon dioxide into carbohydrates. Placing the photosynthetic cells on the upper side also helps to reduce water loss through transpiration.