plant tissue - the tissue of a plantfibrous tissue - tissue consisting of or containing fibers in both animals and plants cortex - the tissue forming the outer layer of an organ or structure in plant or animal medulla - the inner part of an organ or structure in plant or animal perisperm - the nutritive tissue outside the sac containing the embryo in some seeds stroma - the dense colorless framework of a chloroplast pith - soft spongelike central cylinder of the stems of most flowering plants parenchyma - the primary tissue of higher plants composed of thin-walled cells that remain capable of cell division even when mature; constitutes the greater part of leaves, roots, the pulp of fruits, and the pith of stems vascular tissue - tissue that conducts water and nutrients through the plant body in higher plants gall - abnormal swelling of plant tissue caused by insects or microorganisms or injury meristem - undifferentiated tissue from which new cells are formed, as at the tip of a stem or root peel, rind, skin - the tissue forming the hard outer layer (of e.g. a fruit) |