Question: what is parenchyma sclerenchyma and collenchyma?
Answer: Parenchyma forms the "filler" tissue in the soft parts of plants, and is usually present in cortex, pericycle, pith, and medullary rays in primary stem and root. Collenchyma cells have thin primary walls with some areas of secondary thickening. ... Sclerenchyma provides the main structural support to a plant.