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Plant Transport and Water Relation - Coggle Diagram
Plant Transport and Water Relation
Include
Root uptake
Divide into
Water uptake (Osmosis)
means
Moves down water potential gradient into root hairs
Essential for Support (turgidity), reaction, and transport
Mineral uptake (Ions)
means
Absorbed as ions (e.g., NO3-,Mg2+)
Mechanisms: Diffusion of Active Transport
Active transport require energy (respiration).
Turgor State
means
Turgid: Internal pressure provides support (good water supply)
Flaccid/Wilted: Loss of turgidity due to water shortage
Vascular Transport Systems
Divide into
Xylem
means
Transport water and dissolved minerals
Flows up (transpiration stream)
Phloem (Translocation)
means
Transport sugar (sucrose) and amino acids.
Flows from source (e.g., leaves) to sink (e.g., roots/growing points)
Arrangement
means
Stem: Bundles in a ring (support)
Root: Bundles from a central rod
Transpiration (Water Loss)
Divide into
Mechanism and Deefinition
means
Evaporation and diffusion of water vapor from leaf surfaces
Drives the upward movement of water (transpiration stream)
Water loss mainly occurs through stomata
Factors Affecting Rate
means
Increase Rate: Wind, high temp, low humidity, high light intensity
Wilting occurs if water loss exceeds uptake
Measurement
means
Potometer (measures water uptake)
Cobalt Chloride Paper (qualitative test for water loss)
Xerophytic Adaptations (reducing Loss)
means
Thick waxy cuticle or sunken stomata
Reduces leaf surface area (e.g., needles or spines)
Rolled leaves or shedding leaves