Question

Observe the following diagram and select the property that is false.

• A. It provides mechanical support to the growing parts of the plant such as young stem and petiole of leaves.
• B. It is present below the epidermis in the form of a homogenous layer or as patches in dicot stem.
• C. It is present in the form of semilunar patches in the pericycle of monocot stem.
• D. They can assimilate food.

Answer 1

Answer: (C)

The collenchyma occurs in layers below the epidermis in most of the dicotyledonous plants. It is found either as a homogeneous layer or in patches. It consists of cells which are much thickened at the corners due to deposition of cellulose, hemicellulose and pectin. Collenchymatous cells may be oval, spherical or polygonal and often contain chloroplasts. These cells assimilate food when they contain chloroplasts. Intercellular spaces are absent. They provide mechanical support to the growing parts of the plant such as young stem and petiole of a leaf.