AP BIOLOGY

PLANTS

PLANT TISSUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the function of collenchyma?
A
Large intercellular air spaces for gaseous exchange
B
Contain chloroplast to carry out photosyntesis
C
Store food
D
provide flexible support for young parts of plant (shoot, stem, leaf and roots/ herbaceous plant (non woody plant)
Explanation: 

Detailed explanation-1: -Collenchyma cells can be found in the growing parts of the roots and shoots of a plant, as they provide support but still allow for flexibility which is needed as the plant grows. Collenchyma is often present in herbaceous and woody plants and the stems and leaves of mature herbaceous plants.

Detailed explanation-2: -Collenchyma tissue is composed by elongated living cells of uneven primary thick walls, which possess hemicellulose, cellulose, and pectic materials. It provides support, structure, mechanical strength, and flexibility to the petiole, leaf veins, and stem of young plants, allowing for easy bending without breakage.

Detailed explanation-3: -Collenchyma provides mechanical strength as well as flexibility to the plant organs.

Detailed explanation-4: -Collenchyma tissues are composed of oval or prismatic cells that are commonly elongated and can occur in long strands or cylinders. Collenchyma tissue is specialised to provide flexibility to various parts of the plant like petiole and stem since they are non lignified. It allows for easy bending without breakage.

Detailed explanation-5: -As described in the beginning of this question, collenchyma cells are found in young stems and petioles (leaves) and function to provide flexible support to the plant.

There is 1 question to complete.