Tissues Plant and Animal Tissues

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A tissue is a group of similar cells performing a specific function. Tissue helps cells work together, just as a team works better than a single worker.

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Several tissues together form an organ. Many organs working together form an organ system. Organ systems together form an organism. Example: different tissues in the tongue make an organ, and the dige…

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Plant tissues are of two main types: meristematic tissue and permanent tissue. Meristematic tissue has cells that can divide and form new cells. Permanent tissue has cells that have lost the ability t…

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Meristematic tissue is a plant tissue whose cells multiply to produce new cells. It is found at growing points such as the tips of roots, stems and branches, and between bark and wood in trees.

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Meristematic cells are small, usually cubical, thin-walled, tightly packed, and have large nuclei. Vacuoles are almost absent and there are almost no intercellular spaces. These features help the cell…

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The two main types are apical meristem and cambium or lateral meristem. Apical meristem is near the tips of roots and stems. Cambium is below the bark and helps increase the diameter of the stem.

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Permanent tissue is made of cells that have lost the ability to divide. These cells become specialised for permanent functions. They may be living or dead.

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Permanent tissue is of three types: protective, supporting, and conducting. Protective tissue covers and protects plant parts, supporting tissue gives strength and storage, and conducting tissue trans…