Yes the lower eqidermal layer is corvered with cuticle.
Lower epidermal cells.
Epidermal cells are important to the leaf because depending on the climate that the plant resides within, the plant may create more than one epidermal layer. The purpose of this/these layer is to retain water, and some plants have a cuticle formed on the outside of the epidermis to prevent the loss of water too. In order to bring in CO2 from the air, leaves contain stoma which are essentially small pores in the lower epidermal layer that can open or close based on the plants needs. Guard cells on each side of stoma regulate gas exchange, as well as the loss of water.
The lower epidermal layer of leaf has many holes (stomata) in it and guard cells surrounding these holes. In the roots the epidermis has many root hairs growing out of it or regions of dead root hairs where over time the roots have grown longer and the old root hairs are no longer needed to capture water. In the upper epidermis of a leaf you would see palisade cells just beneath the epidermal layer and a waxy cuticle just above.
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.
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No, the upper epidermis is covered by a cuticle.
The waxy translucent layer is the cuticle the upper epidermis is where most photosynthesis occurs and the lower epidermis where very little photosynthesis occurs
This answer refers to the cell layers of a plant leaf: There's the outer cuticle, the upper epidermis, the palisade mesophyll cell, the bundle sheath cell (containing xylem and phloem) surrounded by spongy mesophyll cells and then the lower epidermis. Not sure if this helps...
Plants have tried to minimize the water loss by some adaptations like presence of sunken stomata only on the lower side of the leaf, cuticle and waxy depositions on the epidermal cells, leafless plants (certain cacti), presence of hairs, spines etc.
The cuticle is thicker at the top because it causes the top leaves to absorb more water. More than likely a thicker top is seen in hot and dry climates.
The waxy leayer of leaves is called the "epidermis". It forms the boundary separating the plant's inner cells from the external world. The epidermis serves several functions: protection against water loss, regulation of gas exchange, secretion of metabolic compounds, and (in some species) absorption of water. The epidermis is usually transparent (epidermal cells lack chlorophyll) and coated on the outer side with a waxy cuticle that prevents water loss. The cuticle is in some cases thinner on the lower epidermis than on the upper epidermis, and is thicker on leaves from dry climates as compared with those from wet climates.
upper layer