Stomata and the thickness of the leaf
The exchange of carbon dioxide and oxygen between plant organisms and the atmosphere occurs by two processes: cellular respiration and photosynthesis. Cellular respiration is when oxygen and glucose get "breathed in" by the cell, and in turn the cell "breathes out" carbon dioxide, water, and energy. The opposite happens for photosynthesis.
As an answer to your question, cellular respiration happens in the mitochondria, and photosynthesis happens in the chloroplasts. Mitochondria and chloroplasts are organelles ("organs of cells") in plant cells.
Stomata and the thickness of the leaf
I believe it to be the cuticle.
Sunken and hairy stomata
Stomata.
xylem
Most of their stomata are on the underside of the leaf.
The outermost layer both the upper and lower surfaces is the clear, waxy cuticle. This layer protects the inner tissues and slows down water loss from the leaf.
The two structures in plant leaves that prevent the loss of water are stomata (located in the bottom part of the leaf) and the epidermis (covers the top and bottom of the leaf).
Transpiration.
xylem
Most of their stomata are on the underside of the leaf.
the underside of the leaf loses water much faster
transpiration
The cuticle is a waxy covering on the leaves of plants. It is produced by the upper epidermis, which is like the skin of a leaf. Its function is to protect the leaf from water loss through evaporation. Hope this helps!
cuticle is the thick layer outside the leaf to prevent loss of water.
the leaves begin to adapt by having waxy layers and hairs to avoid the maximum loss of water i deserts. and also by formation of more specialised stomata
dvgd
prevent water loss
yes
at the external layer is the lamina which is the flat leaf. there is also the network of veins which provides the minerals.furthermore is the petiole which holds the leaf the the main branch.lastly is the cuticle which prevents excessive loss of water of the plant. this is the internal structure of the leaf courtesy from www.wikipedia.org HI
To prevent water loss from free surface of leaves epidermal cells are provided with thick cuticle, radially elongated epidermal cells and presence of waxy deposition. Further water loss is prevented by sunken stomata and epidermal motor cells etc.