🌿Transport In Plants🌵
🍀Small distance transport >Diffusion
>Cytoplasmic streaming
>Active transport
🍀Translocation
>Transport over a long distance
>Through vascular tissues, xylem and phloem
🍀Multidirectional transport
>Organic compounds and mineral nutrients
🍀Unidirectional Transport
>Through xylem, water and minerals
🍀Diffusion
>Passive transport from higher to lower concentration
>Gaseous movement in plants
>Depends on the concentration gradient, permeability, temperature and pressure
🍀Facilitated diffusion
>Diffusion of hydrophilic moiety through a carrier protein
>Concentration gradient is required
>No expenditure of energy
🍀Aquaporins
>Water channels
🍀Symport
>Diffusion of two molecules in the same direction
🍀Antiport
>Diffusion of two molecules in the opposite direction
🍀Active transport
> Transport against the concentration gradient
>Uphill transport
>Expenditure of energy
🍀Osmosis
>Movement of water through a selectively permeable membrane from higher potential to lower potential until equilibrium is achieved
🍀Plasmolysis
>Water moves out of the cell leading to shrinkage
>Occurs in a hypertonic solution
🍀Flaccid
>When cells are kept in an isotonic solution, there is no net movement of water
🍀Turgid
>Cells become turgid when placed in a hypotonic solution
🍀Imbibition
>Absorption of water by solids and colloid
E.g. water absorption by seeds, dry wood
🍀Apoplastic path
>Cell wall and intercellular spaces
🍀Symplastic path
> System of interconnected protoplast
🍀Transpiration
>Loss of water through evaporation
🍀Guttation
>Exudation of xylem sap near the tip of grasses mostly at night due to root pressure
🍀Transpiration Pull
>Driving force for transportation of water upwards from roots to leaves
🍀Phloem Translocation
>Bidirectional, active process
Water, sucrose and other sugvars, amino acids, hormones
