Parenchyma:

Parenchyma , in plants, tissue typically composed of living thin-walled cells. Parenchyma tissue is found in the inner layers of leaves, in fruits and seeds, and in the cortex and pith of roots and stems. It is one of the three ground tissues in plants and is involved in photosynthesis, food storage, and secretion. Parenchyma is the functional tissue of an organ or a structure, such as the brain, lungs, liver, kidneys, tumours or flatworms. Learn about its etymology, types, functions and damage in different contexts from this comprehensive article. Parenchyma is a thin-walled, actively dividing cell that makes up the inside of many non-woody plant structures such as stems, roots, and leaves. Parenchyma tissue is a type of simple permanent tissue that is fundamental to all plants. The term ‘ parenchyma ’ has originated from the Greek word ‘Para’ which means beside and ‘Enchyma’ meaning inclusion. It was introduced in the 17th century when Robert Hooke discovered the plant cells. Parenchyma is a simple permanent tissue that makes up large portions of various plant organs . It consists of thin-walled living parenchymatous cells. The word parenchyma comes from the Greek words para and enchyma. Para means besides, and enchyma means infusion (i.e., tissue).