To write:
The difference between epidermis and guard cell.
Introduction:
Along with cell wall in plant cell there are many different cells that have specific function and form tissue. There are three types of cells that form the plant tissues. They function together to provide food production and storage; give flexibility, support, and strength to the plants. Parenchyma is the most flexible and thin cell found in the plants. Similarly the transportation of nutrients, water, and other substances in plants are carried out by tissue like xylem and phloem they are considered as vascular tissue. Different cells are found in different part of plants, the epidermis and the guard cells are two types of cells that are located in the epidermis of the plants that is originated from the dermal tissue. This involve in from a contact of the plants with the external environment. Found in the outer portion of the roots, stems, and leaves.
Explanation of Solution
The epidermal cells are involved in providing protection to the plants from the external environment while the guard cells are involved in exchange of gases. The epidermal cells are rectangular or tubular in shape while the guard cells are bean-shaped or dumbbell shaped. The epidermal cell does not have chloroplast while the guard cells have chloroplasts. The epidermal cells are differentiated from protoderm while the guard cells are differentiated from epidermal cells. The epidermal cells are found in the leaves and stems epidermis while the guard cells are found in epidermis of roots, stems, and leaves. In epidermal cells the cutin is present in the cell wall while in guard cell cutin is absent.
The epidermal cell provides protection to the plants from the environment. They are found in the epidermis of stem, and leaves, and consist of chloroplast. Guard cells are involved in exchange of gases found in the epidermis of root, stems, and leaves, and chloroplast is absent.
Chapter 22 Solutions
Biology Illinois Edition (Glencoe Science)
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