PLANTS
PLANT TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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does not contain chloroplasts except for the guard cells of the stomata.
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has not got a cell wall.
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contains chloroplasts except for the guard cells of the stomata.
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has the same bean-shape.
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Detailed explanation-1: -Dermal tissue refers to the plant epidermis, the outer layer of tissue that surrounds the primary body of vascular plants. This includes the roots, stems, leaves, flowers, fruits, and seeds. The dermal layer does not contain chloroplasts and is typically composed of a single layer of tightly-packed cells.
Detailed explanation-2: -In addition to the nucleus, guard cells contain chloroplasts, which are not present in other epidermal cells. These chloroplasts are considered to be photoreceptors involved in the light-induced opening in stomata. Mitochondria are also present in guard cells.
Detailed explanation-3: -Chloroplasts are a key feature of most guard cells; however, the function of these organelles in stomatal responses has been a subject of debate. This review examines evidence for and against a role of guard cell chloroplasts in stimulating stomatal opening.
Detailed explanation-4: -The most common cell type in dermal tissue is the epidermal cell. Generally, a thin, waxy layer called a cuticle covers the epidermal cells and protects them. Other cells in the dermal tissue are guard cells that surround the stomata, which are openings in the leaves.