SCIENCE
BOTANY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
collenchyma
|
|
parenchyma
|
|
sclerenchyma
|
|
None of the above
|
Detailed explanation-1: -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-2: -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.
Detailed explanation-3: -collenchyma, in plants, support tissue of living elongated cells with irregular cell walls. Collenchyma cells have thick deposits of cellulose in their cell walls and appear polygonal in cross section. The strength of the tissue results from these thickened cell walls and the longitudinal interlocking of the cells.
Detailed explanation-4: -Collenchyma is a specialized simple permanent tissue that provides support and flexibility to plants. This tissue is made up of living cells having uneven thickenings of cellulose, pectin, and hemicellulose on the walls.
Detailed explanation-5: -They have thin and flexible cellulose cell walls and are generally polyhedral when close-packed, but can be roughly spherical when isolated from their neighbors. Parenchyma cells are generally large. They have large central vacuoles, which allow the cells to store and regulate ions, waste products, and water.