A tissue whose living cells form the mechanical tissue of actively growing organs and whose cell walls show cellulosic unlignified thickenings often at the corners of its cells is

Sclerenchyma

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Collenchyma

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Chlorenchyma

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Parenchyma

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Solution

The correct option is C Collenchyma
Collenchyma are the cells of parenchyma with more number of chloroplasts. These are the cells which have cellulose and pectin thickenings at the corners of the cells which are unevenly deposited. These cells have the capability to divide and grow. Due to the deposition of cellulose in te cell wall, they provide mechanical strength to the tissues.

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