BIOLOGY 230 Lecture Notes - Lecture 12: Ground Tissue, Tracheid, Parenchyma
Document Summary
Photosynthesis and respiration, storage, regeneration: where is the parenchyma found, throughout the plant: cortex of roots, ground tissue in stems, mesophyll of leaves, fruits pulp, seeds endosperm. It serves most to the growing parts of the plants: shoots and leaves. Fibers are long and narrow while sclereids are short and can vary in shape. Fibers are in various parts of the plant are classi ed by their location and strength. Sclerieds occur throughout the plant and are responsible for the hard coats on seeds, and gritty texture of fruits. Tracheids are responsible for water and mineral transport: they are long thin cells with tapering ends. Water moves through these cells via their pits. Vessel elements are short and arranged end to end. They allow for long hollow tubes, to transport water rapidly. Your text has illustrations/explanations of bordered pits (ch. 23): pits are areas where secondary cell walls are interrupted and the primary wall is thin, facilitating water passage.
