Albuminous cell - parenchyma-like cell associated with sieve cells in the
phloem of gymnosperms and some ferns.
Bud - an undeveloped shoot, largely meristematic tissues, generally protected
by modified scale-leaves; also a swelling on a yeast cell
that will become
a new yeast cell when released.
Companion cell - cell associated with sieve-tube members.
Epidermal cells - the most abundant cell type in the epidermis; typically lack
Fiber - an elongated, tapering, thick-walled strengthening cell occuring in various
parts of plant bodies; one of the cell types
in sclerenchyma tissues.
Flower - floral leaves grouped together on a stem and adapted for sexual
in the angiosperms.
Fruit - a matured ovary; in some, seed plants and other parts of the flower may
be included; also applied, as fruiting body, to reproductive
other groups of plants.
Guard cells - specialized epidermal cells found on young stems and leaves;
between each pair of guard cells is a small pore through which
gases enter or leaves; a pair of guard cells in addition to the
pore constitute a stoma.
Root system - all of the roots and branches initially derived from the radicle of
Shoot system - all stem, leaves, buds, flowers and fruits developed from the
shoot apical meristem.
Sieve cells - a long ans slender sieve element found in the phloem of
gymnosperms and some ferns, often associated with a
specialized parenchyma-like albuminous cell, with relatively
unspecialized sieve areas and with tapering end walls that lacks
Sieve plate - wall area in a sieve-tube member containing a region of pores
through which pass strands connecting sieve-tube protoplast.
Sieve tube - a series of sieve-tube members forming a long, cellular tube
specialized for the conduction of food materials; found in flowering
Sieve-tube members - portion of a sieve tube composed of a single
protoplast and separated from other sieve-tube
by sieve plates.
Stem - the main body of the portion above-ground of tree, shrub, herb or other
plant; the ascending axis, whether aboveground
or belowground, of a
plant, in contradistinction to the descending
axis or root.
Subsidiary cell - type of epidermal cell in contact with guard cells on leaves.
Succulent - a plant having juicy or watery tissues.
Tracheid - an elongated, tapering xylem cell with lignified pitted walls, adapted
conduction and support, and without open end walls.
Trichome - a short filament of one or more cells extending from the epidermis.
Vascular - referring to a plant tissues (xylem and phloem) or region consisting
or giving rise to conducting tissues; for example, vascular bundle,
cambium, phloem ray.
Vessel member - a conducting cell in the primary and secondary xylem;
typically have a lignified secondary cell wall and open end
walls, a perforation plate.
Xeophyte - a plant resistent to drought or that lives in dry places.