Question

Assertion : Husk of coconut is made of sclerenchymatous tissue.
Reason: Cells of sclerenchymatous tissue are dead with long and narrow walls thickened due to lignin.
please answer
​

Answer 1

the husk of the coconut is made up of scelerenchyma tissues which is aide of dead cells that gives rigidity and stiffness to the plant. The presence of lignin on the walls of the cells makes it hard too....

Answer 2

Answer:

Both A (Assertion) and R (Reason) are correct and R (Reason) is the correct explanation of A (Assertion).

Explanation:

• The husk of the coconut is made up of Sclerenchymatous tissue. It is a supportive tissue of the plant and provides strength and mechanical stiffness because cells in this tissue are lignified and thick-walled.
• Sclerenchyma tissue is a type of simple permanent tissue. Simple means have uniform cells and permanent means that they lose the power of cell division. It attains a definite size, shape, and function. Cells in this tissue are narrow and long, and dead without protoplast. Both primary and secondary cell walls are present. The secondary cell walls are rich in lignin, cellulose, hemicellulose, and pectin.
• There are two types of sclerenchyma cells; sclereids and fibres. Sclereids are variable in shape and found in various tissues of plants, such as xylem, phloem, cortex pith, and periderm. Fibres are long elongated cells with tapering ends. These are found in the stems, roots, and vascular bundles of leaves.
• The functions of sclerenchyma tissue are to provide mechanical strength, and protect nuts and seeds by making their coverings, etc.

#SPJ3