thin-walled. living cells capable of dividing and essential in photosynthesis. radial transport. energy storage. and production of protective compounds.

parenchyma cells (Wikipedia)
Parenchyma (pale grey) in a plant stem, with scattered veins (darker red)

Parenchyma (/pəˈrɛŋkɪmə/) is the bulk of a substance. In animals, a parenchyma comprises the functional parts of an organ and in plants parenchyma is the ground tissue of nonwoody structures.

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