How do Plants Absorb Water? Video Lecture - Biology Class 11 - NEET

absorption of water by plants
the root is the organ of a plant that
typically lies below the surface of the
soil the roots do not possess nodes
leaves and buds but is branched
extensively the roots are well suited
both morphologically and anatomically to
absorb water and minerals from the soil
morphologically the root system consists
of the main root the lateral roots or
the secondary roots and the root hairs
or the tertiary roots the main root
gives out branches called the lateral
roots or the secondary roots the lateral
rules in turn have number of fine
outgrowths called the root hairs or the
tertiary roots anatomically the roots
consists of root gap meristematic zone
elongation zone maturation zone root gap
is the structure found at the tip of the
root which protects the young delicate
and rapidly dividing cells menace
pneumatic zone is a few millimeters long
and is known as the region of cell
division meristematic cells which divide
rapidly are found in this region some
cells of this region from the root gap
and the others from the region of
elongation elongation zone is also a few
millimeters long and is known as the
region of elongation cells of this
region undergo rapid enlargement and
leads to root close the region of
maturation lies about the elongation
zone and extends upwards maturation zone
consists of a very fine and delicate
thread like structures called the root
hell's about which the lateral branches
are produced the cells of this region
under good differentiation and
maturation into various plant tissues
based on their functions root has
increase the surface area for absorption
of water and mineral salts
root has have large surface area to
absorb a large amount of water required
by the plant root hairs are unicellular
and are produced in thick clusters they
are very thin allowing the water
molecules and mineral salts to diffuse
through them easily cell membrane of
these cells is semipermeable in nature
water molecules and mineral salts enter
the cell by osmosis
they contain cells up that is a solution
of higher concentration than that of the
surrounding soil water
did you know some of the specialized
variations of roots are aerial roots are
roots exposed to air extremely long and
unbranched root tubers are swollen
portions of a root that can have buds to
produce new shoots and then broken off
these can grow into a new plant
substances move from a region of lower
concentration to a region of higher
concentration using energy in the form
of ATP adenosine triphosphate this
process is called active transport route
hair absorbs minerals by a process of
active transport
root hair absorbs water from soil by
osmosis water then diffuses into the
deeper parts of the roots by
cell-to-cell osmosis it passes through
the root tissues to the xylem in the
root which carry it to all parts of the
plant that is the stem and the leaves
morphologically the root system consists
of the main root the natural roots or
the secondary roots and the root hairs
or the tertiary roots anatomically the
roots consists of root gap meristematic
zone elongation zone and the mature
Asian zone root gap is the structure
found at the tip of the root which
protects the young delicate and rapidly
dividing cells meristematic zone is a
few millimeters long and is known as the
region of cell division the cells of the
region of elongation undergoes rapid
enlargement and leads to root growth the
mature Asian zone consists of root hairs
about which the lateral branches are
produced active transport is the
movement of substances from a region of
lower concentration to a region of
higher concentration using energy in the
form of ATP adenosine triphosphate