Question

is lumen or cell cavity present in Parenchyma​

Answer 1

Answer:

Parenchyma is composed of living cells with large internal space (lumen). Under the high power of microscope nucleus may be visible. Epidermis, cortex and pith are essentially composed of parenchyma tissue. Sclerenchyma cells are generally found below the epidermis or just above the vascular bundles.

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Answer 2

In many aquatic plants, parenchyma cells have large air cavities to give buoyancy to the plant and enable them to float in water. Such, parenchyma cells are called as aerenchyma.