A specialized short, wide cell in angiosperms; arranged end to end, they form continuous tubes for water transport.
sieve tube element
phloem cell that is joined end-to-end to similar cells to form a continuous sieve tube
A type of plant cell that is connected to a sieve-tube member by many plasmodesmata and whose nucleus and ribosomes may serve one or more adjacent sieve-tube members.
the primary tissue of higher plants composed of thin-walled cells that remain capable of cell division even when mature
type of ground tissue cell with a strong, flexible cell wall; helps support larger plants
type of ground-tissue cell with an extremely thick, rigid cell wall that makes ground tissue tough and strong
Embryonic plant tissue in the tips of roots and in the buds of shoots that supplies cells for the plant to grow in length.
part of a root system in which roots branch to such an extent that no single root grows larger than the rest
The innermost layer of the cortex in plant roots; a cylinder one cell thick that forms the boundary between the cortex and the vascular cylinder.
A water-impermeable ring of wax in the endodermal cells of plants that blocks the passive flow of water and solutes into the stele by way of cell walls.
a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem
lateral meristematic tissue that produces vascular tissues and increases the thickness of the stem over time
A cylinder of meristematic tissue in plants that produces cork cells to replace the epidermis during secondary growth
newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant
tree structure that includes all tissues outside the vascular cambium, including phloem, the cork cambium, and cork
The ground tissue of a leaf, sandwiched between the upper and lower epidermis and specialized for photosynthesis.
cells that are underneath the upper epidermis, Site of most photosynthesis (layer in cell)
located beneath the palisade cells also contain chloroplasts but more importantly they are the site of gas exchange
opening in the underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf
a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries