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What are the 2 layers inside a leaf?
The tissues of the leaf in between the epidermal cells, into which gases diffuse from the stomata, are called mesophyll. The mesophyll can be further broken down into two layers, the palisade layer and the spongy layer, both of which are packed with chloroplasts, the factories of photosynthesis.
Where is the upper epidermis on a leaf?
Epidermis: A single layer of cells that covers all parts of a plant. Plants leaves contain an upper epidermis which is located on the upper side of the leaf and a lower epidermis located on the underside of the leaf.
What is the upper epidermis of a plant?
On the top of the leaf, this is known as the upper epidermis. This is a single layer of cells found directly below the cuticle. It helps protect the leaf by aiding in preventing water loss and providing an extra layer between the outside and inside of the leaf.
How is the upper epidermis involved in photosynthesis?
The upper epidermis is involved in photosynthesis by allowing sunlight to penetrate through its layer.
Why are chloroplasts located near the upper epidermis?
cells that contain the most chloroplasts are located near the leaf’s upper surface where they are exposed to the sun. Leaves are typically flat and thin to have more surface area for the chloroplasts and to allow sunlight to reach all the cells.
What is found in the upper epidermis of the leaf?
Upper epidermis This is a single layer of cells containing few or no chloroplasts. The cells are quite transparent and permit most of the light that strikes them to pass through to the underlying cells. The upper surface is covered with a waxy, waterproof cuticle, which serves to reduce water loss from the leaf.
Why are stomata located on the underside of the leaf?
Specialized cells known as guard cells surround stomata and function to open and close stomatal pores. Stomata allow a plant to take in carbon dioxide, which is needed for photosynthesis. The majority of stomata are located on the underside of plant leaves reducing their exposure to heat and air current.