Question

Select the correct statement from the following(a to d)
(a) Living mechanical tissue
(b) Assimilate food when they contain chloroplast
(c) Characterized by the presence of thick lignified cell wall
(d) Present below the epidermis in most of the monocotyledonous plants

• A. Only (a)
• B. (a) and (b)
• C. (a) and (c)
• D. (a), (b), (c), and (d)

Answer 1

Answer: (B)

(a) and (b) statements both are correct. Collenchyma is the type of simple permanent tissue, They are made up of a similar type of cell that carries the same function. These cells possess pectocellulose thickenings at tangential walls, angles, or adjacent to intercellular spaces and a large central vacuole with peripheral cytoplasm. Collenchyma is present below the epidermis in dicots. The main function is providing mechanical strength to young dicot stem, petiole, and leaves. It also provides flexibility along with strength. its cells mostly contain chloroplasts so they perform photosynthesis. In monocotyledons stem, the outermost covering is the epidermis. Below this hypodermis is present that made up of sclerenchymatous tissue. Sclerenchyma is another simple permanent tissue which has lignified thick cell wall and these tissues are composed of dead cell.