Question

Which of the following tissue provide tensile strength against bending and swaying?

• A. Parenchyma
• B. Collenchyma
• C. Sclerenchyma
• D. Sclereids

Answer 1

Answer: (B)

Collenchyma

Parenchyma is a simple tissue, which is composed of thin-walled polyhedral, isodiametric living cells with sufficient cytoplasm and one or more nuclei. These tissues serve the purpose of storage but do not provide flexible support.

Collenchyma is simple living tissue with thick non-lignified walls and uneven deposition of cellulose and pectin. They are derived from parenchyma and are present in groups under epidermis to provide flexibility to the growing plant's organs.

Sclerenchyma is a dead tissue with thick lignified cell walls, which makes it hard and tough. They are found in dead, nongrowing plant parts to provide them mechanical strength.

Sclereids are sclerenchymatous tissues characterized by the presence of a much higher amount of lignin, making them too hard to provide flexible support.

So, the correct answer is option B.