A tissue consists of cells of only one or several types, having a common origin and performing an identical function (Fig. 98). (a) Meristematic: These are small, thin- walled cells, devoid of any central vacuole and situated at the growing points of stems and root. Their chief function is mitosis. (b) Protective: The cells of […]
Different Cells of Plant Tissues
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Stomata: Meaning and Types (With Diagram) | Biology
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In this article we will discuss about the meaning and types of stomata. Meaning of Stomata: Stomata are very minute openings found in the epidermal layer of leaves, stem and other aerial parts of the plant. Each stoma remains surrounded by two kidney-shaped or bean-shaped cells called guard cells. Chloroplasts are always present in the […]
Characteristics of Trichomes | Biology
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General Characteristics of Trichomes: Some of the epidermal cells of axis, leaves and other plant parts grow out in the form of trichomes or hairs. They (Fig. 138) show following characteristics: 1. These are the elongations or the extensions of epidermai cells. 2. They are found singly or in groups. 3. Trichomes may be unicellular […]
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