Bio1152
Chapter
35
Plant Structure, Growth, and Development
Plants, like multicellular animals, have
composed of different
, which are in turn
composed
of
.
The basic organs of vascular plants are
,
, and
, organized into a
system and a
system.
A root
the plant to soil,
absorbs
minerals and
, and often
organic
nutrients.
A
stem
consists of alternating
, the points at which leaves are attached, and
.
The
leaf
consists of a flattened
and a stalk called a
.
Each leaf is composed of several
tissues.
Many leaves have been
modified
to perform specialized functions.
Most plants have three tissue
systems:
,
, and
.
The dermal tissue system consists of the
and is often covered with a
waxy
.
The
vascular
tissue system transports materials within the plant.
Ground
tissue
includes cells specialized for functions such as
,
, and
.
are regions of cell
growth.
meristems
are located at the tips of
and in the buds of shoots where
growth
occurs to lengthen the plant.
meristems add thickness to stems and roots of
plants through
growth.
Secondary
growth
occurs in the
cambium and
cambium of roots and
stems.
The alternation of
and
wood give rise to growth rings in
trunks.
Review:
Roots, Stems, and Leaves.
Review:
Primary and Secondary Growth.