Question

Differentiate between structure and functions of Parenchyma and Sclerenchyma.​

Answer 1

Explanation:

Parenchyma cells help in storage of foods, in gaseous exchange, and in photosynthesis. Collenchyma cells provide mechanical support and elasticity to the plant. Sclerenchyma cells provide mechanical support to the plant. It also supports transportation of water and nutrients to the plants.

Answer 2

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• ==> Tissue provides structural strength, mechanical strength, and shows division of labour.A collective number of tissues form organs in the multicellular organism. Simple tissues consist of cells that are structurally and functionally similar. They are made up of only one type of cells.

Three types of simple tissues

Simple tissues are of three types namely parenchyma, collenchyma and sclerenchyma.

• ==> Parenchyma – They are living cells and walled, soft in nature due to the presence of thin-walled cells

• ==> Collenchyma – These are characterized by uneven thick-walled living cells.

• ==> Sclerenchyma – They have cells with thickened lignified walls, providing them strength and making them waterproof.

Functions

Functions of parenchyma

• The main function of parenchyma is to store and assimilate food. Hence, they are referred to as food storage tissues.
• Serves as a packing tissue to fill the spaces between other tissues and maintain the shape and firmness of the plant.
• Stores waste products of plants.

Functions of collenchyma

• A mechanical tissue and provides mechanical support and elasticity to the stems of dicot plants.
• Cells possess chloroplast, then it is involved in manufacturing sugar and starch.
• Provides tensile strength and flexibility to the plant body.

Function of sclerenchyma

• Provides mechanical strength to the plant.
• Makes the plant body rigid, flexible, and elastic.