concept 23 - BIO10008

explain the significance of the evolution of vascular tissue

define the two components of water potential

explain the important role of water in plants

nutrients that plants acquire through uptake via roots

difference between apoplast and symplast

apoplast water movement

symplast water movement

role of casparian strip

two types of water conducting cells in plants

structure features of water conducting elements that make them well adapted for transporting water

how does water move from soil to top of the plants

why is the movement of water in one direction

in drought conditions tall trees sometimes form air bubbles within xylem vessels called embolism or cavitations, with reference to the tension cohesion model explain what the impact of the formation of embolisms would have on water transport

summarise and explain how cohesion, adhesion, transpiration and water potential all contribute to the movement of water from the soil, past the Casparian strip and to the leaves in plants

compare and contrast the water use and transpiration and photosynthetic rates in:

full sun, water in soil plentiful

rainy over cast, water in soil plentiful

full sun, drought limited water in soil

describe the process of water and sugar transport in a plant emphasising the essential differences between the two