Transport Processes in Plants
Long distance transport: Xylem
Long distance transport: Phloem
Image????
water transport through xylem
properties of water
control of water transport by guard cells
powered by water loss to the atmosphere
carries minerals from upward roots to shoots
transpiration is more significants
water movements through xylem is influenced
water movement through xylem and plants as whole
when the stomatal pores open they allow waterloss
stomatal transpiration
cohension theory is widely accepted
requires lot of energy to lift as water is heavy
movement of water through xylem
has cohesive adhesive types
water molecules interact with other water molecules
membrane bound molecular pumps and active transport
cotyledons and endosperm are sources for embryos germinations
nutrients that are moved through phloem is not known yet
produce sugar exported to the rest of the plants
exact mechanisms by water
leaves are dominant sources in the summer
molecular pumps
Aquaporins
Water potential
membrane has protein channel
molecules are extremely concentrated onj the receiving side
uses the ATP to force molecules
diffusion osmosis, active transport
diffusion through a membrane is osmosis
it crosses the membrane
selective permeable membrane allows only certain materials
material moves through a solution
Image????
short distance inter cellular transport
Transfer cells
Motor cells
Guard cells
it has internal pressure
based on short distance interval
opening of stomatal spores
they are hydraulic with the surrounding cells
use STM/CC complex
depends on the molecular pump
consist of both conducting cells
materials can be actively transported
petiole attached to lamina and the stema
expel potassium
adjust their water potential and turgidity
can be heated, pressures or elevated
chemical potential refers to as water potential
water has free energy
water available in air
water available in water
can be increased in several ways
cells and water movement
cell is turgid and presses against cell wall
have at least few organisms
contains solute that causes osmotic potential
lakes and rivers have fresh water
variety of forms in water