During a histological examination of a plant’s leaf stalk, elongated cells with irregularly thickened corners and very little intercellular space are observed. Which simple permanent tissue is present and what is its primary function in this region?
Collenchyma
Collenchyma consists of living, elongated cells whose walls are irregularly thickened at the corners, with very little intercellular space.
It is found in leaf stalks (petioles) and below the epidermis of young stems, where it provides mechanical support along with flexibility, allowing these parts to bend without breaking.
Parenchyma and chlorenchyma have thin walls with large intercellular spaces, and sclerenchyma has uniformly thickened, lignified walls of dead cells.
Hence, the answer is Collenchyma.
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