Question
Explain the types of simple permanent tissues in plants.

Answer

Name of TissueParenchymaCollenchymaSclerenchyma
Struc­ture of cellsLiving cells with thin cell wall and intercellular spaces.Elongated living cells with thickened cell wall at corners due to cellulose and pectin.Dead and fibrous cells with tapering ends, cell wall contains lignin.
Loca­tionAll parts like roots, stem, leaves, flowers and seeds.At the base of leaf petiole, branches and stemStem, veins of leaves, hard coats of seeds, outer covering of coconut.
Func­tionsSupport, storage of food and filling vacant spaces.Support and flexibility to various parts.Give strength and rigidity to parts of the plants.
Sub­ typesChlorenchyma: Leaves, perform photosynthesis. Aerenchyma: Helps aquatic plants, leaves and stem to float.

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