VS.

Collenchyma vs. Sclerenchyma

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Collenchymanoun

(biology) A living, elongated, mechanical and flexible ground tissue with angular pectin depositions; present just under leaves, tendrils and stems of climbers; formed before vascular differentiation.

Sclerenchymanoun

(botany) A mechanical ground tissue, impermeable to water, which consists of cells having narrow lumen and thick, mineralized walls of lignin; present in stems, vascular bundles (of monocots), seed coverings, and vein and tips of leaves.

Collenchymanoun

A tissue of vegetable cells which are thickend at the angles and (usually) elongated.

Sclerenchymanoun

(zoology) The hard calcareous deposit in the tissues of the stony corals (Anthozoa).

Sclerenchymanoun

Vegetable tissue composed of short cells with thickened or hardened walls, as in nutshells and the gritty parts of a pear. See Sclerotic.

Sclerenchymanoun

The hard calcareous deposit in the tissues of Anthozoa, constituting the stony corals.

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