Sclerenchyma cells provide protective, vascular and supportive functions, according to the McGraw-Hill Higher Education. They have fibers and sclereids, which are responsible for the protective and supportive functions.Know More
Vascular tissues of plants consist of phloem and xylem, says the McGraw-Hill Higher Education. Phloem cells blend in with parenchyma, while xylem cells stand out as sclerenchyma cell types. They are usually found next to each other in vascular tissues. Most sclerenchyma cells die at maturity and thus lack nuclei.
Mature sclerenchyma cells contain secondary cell walls that are thick with cellulose and typically impregnated with lignin, explains the University of the Western Cape. Sclerenchyma is elastic, with a very small cell cavity. The main function of sclerenchyma is supporting tissue in plants. Sclereids are responsible for the shells of walnuts and the hardness of date seeds. Their cells have an irregular shape, and their cell walls are thick and hard. The cell walls contain simple pits or canals, which link adjacent cells. Fibers help transport water in the plant and young; living fibers store starch granules. Fiber cells are characterized by a needle shape, pointed tips, small lumen and thick walls. Vascular tissue of flowering plants contain plenty of fibers, whereas sclereids are often found in fruits and seeds.Learn more about Cells
Collar cells beat their flagella back and forth to force water through the sponge. Collar cells also pick up tiny bits of food brought in with water.Full Answer >
Meristematic cells are plant cells that divide and create new cells. They are physically responsible for the growth of the plant. There are two main types of meristematic cells: primary or apical meristems, which are responsible for increases in length, and secondary or lateral meristems, which cause an increase in width.Full Answer >
The cheek cells, also called epithelium cells, are responsible for maintaining moisture in the oral cavity which in turn aids in digestion, softening food for consumption and facilitating swallowing. Cheek cells constantly produce a flow of muicin, which is the main part of mucous. The cheeks cells divide every 24 hours and are shed rapidly from the body.Full Answer >
According to the Virginia-Maryland Regional College of Veterinary Medicine, the sustentacular cells perform the function of caring and nurturing spermatocytes in the developing stages. The branches of the cells enfold these forming sperm throughout the stages of development.Full Answer >