Differentiate between parenchyma,collenchyma ,sclerenchyma and chlorenchyma.
Answers
Collenchyma-The cells are living,thin-walled,have thicking of cellulose and pectic substance at the corners.intercellular spaces are very less.They provides flexibility to soft airal parts of plant.
Sclerenchyma-These cells are thick wall, without protoplasm,dead,hard,having uniform deposition of lignin,no intracellular space,hexagonal in shape,saves the plant from environment stress,provides rigidity,mechanical strength.
Chlorenchyma-When parenchyma tissue contains chloroplast.It is called chlorenchyma. (ex-leaves)
Explanation:
✡Parenchyma✡ : Parenchyma consists of relatively unspecialized living cells within thin cell wall. Inter-cellular spaces are present in it. They are actually loosely packed. Parenchyma provides support to the plant. They are present in the soft part of the plant. The parenchyma of stems and roots also stores food and water. In aquatic plants, large air cavities are present in parenchyma to help them float. They are known as aerenchyma.
✡Collenchyma✡ : Flexibility in plants is present due to collenchyma. It helps in bending of leaves and stems. It also provides mechanical support to the plants. Cells of these tissues are living and irregularly thickened at corners. There is no inter-cellular space between them. This tissue is correctly present in the leaf stalks below the apidermis.
✡Sclerenchyma✡ : Sclrenchyma is made up of dead cells. Theree are no inter-cellular spaces due to thickness of walls. This tissue makes the plant hard and still as for example : Husk of coconut. They are long and narrow as the walls are thickened. This tissue is present in stems, around vascular bundles in the veins of the leaf and in the hard covering of seeds and nuts. Sclerenchyma also provides strength to the plant parts.
✡Chlorenchyma✡: Chlorenchyma is a tissue which contains chloroplast and is photosynthetic. Which means it helps in photosynthesis. Mesophyll tissue of plant leaves and is also found in the stems of certain plant.
✡more to know✡
what is Aerenchyma ??
Ans} Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root.
what is parenchyma ??
Ans} Parenchyma, in plants, tissue typically composed of living cells that are thin-walled, unspecialized in structure, and therefore adaptable, with differentiation, to various functions.
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