transport in plants
No description yet. This curated deck is ready for daily study.
Card preview (8)
xylem transports….
water and minerals
phloem transports
sucrose and amino acids
xylem provides..
support for the plant (lignin)
Pathway taken by water in a plant
soil —> root hair cells on the surface of a root —> root cortex cells in root —> xylem through the stem —> mesophyll cells in the leaf
transpiration
• evaporation in spongy mesophyll cells to form water vapor • loss of water vapor by diffusion in the stomata
factors affecting rate of transpiration
• Temperature: increase in temperature = increase in evaporation= increase in rate of transpiration • Increase in wind speed = increase in evaporation = increase in rate of transpiration
wilting
condition in which plant’s leaves droop because they loose their firmness due to loss of water. happens when the rate of transpiration is greater than the rate of water uptake
translocation meaning
the movement of sucrose and amino acids through phloem tissue