Loading [MathJax]/jax/output/HTML-CSS/fonts/TeX/fontdata.js
rachbreen
Mind Map by , created more than 1 year ago

Mind Map on Transpiration + translocation, created by rachbreen on 08/05/2013.

370
0
0
No tags specified
rachbreen
Created by rachbreen almost 12 years ago
Rate this resource by clicking on the stars below:
1 2 3 4 5 (0)
Ratings (0)
0
0
0
0
0

0 comments

There are no comments, be the first and leave one below:

Close
Transpiration +translocationTranspirationLoss of water vapour from aerial part ofa plantInevitable process ofphotosynthesesis.Stomata are open for gaseousexchangeOsmosis from xylem vessels tomesophyll cellsEvaporation mesophyll into airspacesDiffusion of water vapour throughstomataIncreaseNo of leaves (SA)Density ofstomataLightintensityTemperatureWind SpeedDecreaseThick waxycuticleSpecialisedadaptionsHumidityXerophytesSmallerleavesThick waxycuticleDense spongy mesophyll reduces airspacesHair on suface = moist trapped air,lower WPSunken stomata pits = moist trapped air,lower WPTranslocationMovement ofassimilatesSink - removes sucrose fromphloemSource - releases sucrose intophloemLeaf = source, sucroseproducedSucrose moves to phloem, activetransportHigh to LowWater moves down phloem, and contents down sieveelementsContents move to sink(bud)High to LowSucrose into sink via facilitateddiffusionH+ pumped out of companioncellIons diffuse back into companion cell, with sucrose -facilitated diffusionSucrose, HIGH TO LOW into sieve tubeelementsDouble click this nodeto edit the textClick and drag this buttonto create a new node