Name two mechanical tissues which provide support in woody plants​

SclerenchymaAND Collenchyma

Explanation:

The tissue which provides support and mechanical strength to a plant or a growing organ in a plant is known as a mechanical tissue. Both the ground tissues- collenchyma (living) and sclerenchyma (dead) provide maximum mechanical strength to a plant.Collenchyma mainly provides mechanical strength to the growing plant parts.The cell wall of collenchyma is made up of- pectin, hemicellulose, protein and cellulose. These thickening materials get deposited at the corners or at the tangential walls of collenchyma cells.It is a living cell which retains protoplasm even at maturity.Due to the presence of hydrated pectin in the walls of collenchyma cells, they also provide elasticity to the cell.Sclerenchyma is the tissue which makes the plant hard and stiff. Sclerenchyma is the supporting tissue in plants.So, the correct answer is 'Sclerenchyma and Collenchyma'.

ANSWER:

1) Sclerenchyma cells are usually found associated with other cells types and give them mechanical support. 

2) Collenchyma tissue is composed by elongated living cells of uneven primary thick walls, which possess hemicellulose, cellulose, and pectic materials.

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