NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANIMAL TISSUES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
These cells are elongated and thick at the corners.
A
Parenchyma
B
Collenchyma
C
Squamous
D
Cubiod
Explanation: 

Detailed explanation-1: -Due to the hemicellulose, cellulose, and pectin deposits, the cells of collenchyma tissue are significantly thickened at the corners. Elongated cells with unevenly thickened walls make up collenchyma tissue. They offer structural support, particularly to leaves and budding shoots.

Detailed explanation-2: -The cells of the collenchyma tissue are living, elongated and irregularly thickened at the corners.

Detailed explanation-3: -The three most characteristic morphological features of collenchyma are (i) their axially elongated cells; (2) their cell wall thickenings; and (3) their living protoplasts (Fig. 1A–D).

Detailed explanation-4: -Pectin and cellulose are deposited at the corner of cells in collenchyma.

Detailed explanation-5: -Collenchyma cells are elongated, living cells that occur especially in peripheral positions in leaves and stems of eudicotyledons where they provide mechanical support while they are still growing [1, 2, 3]. At maturity, the cell walls are thick and usually non-lignified, with the thickening often unevenly distributed.

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