D
dzzlng_07
Guest
has anyone done the prac on the structures in plants that assist in the conservation of water?
please help!!
><
please help!!
><
-
Looking for HSC notes and resources? Check out our Notes & Resources page
prac exam - structues in plants assisting in conservation of water (1 Viewer)
lil_georgie_gal
Member
I have not actually done an exp on this but i guess you could observe plants for structures such as shiny or hairy leaves which reduce transpiration as the leaves would reflect sunlight and reduce air surrounding the leaf.
You could also look at things like if the leaves hang vertically such as in the mulga tree (leaves hang on a 45degree angle to direct rain/water towards the roots)
Also things such as small needle like leaves (thin which reduces exposure to sun hence reducing transpiration due to less surface area) An example is the Hakea tree
Theres also other biological things you could maybe look for with a microscope such as sunken stomates etc....
I hope this helps a bit
You could also look at things like if the leaves hang vertically such as in the mulga tree (leaves hang on a 45degree angle to direct rain/water towards the roots)
Also things such as small needle like leaves (thin which reduces exposure to sun hence reducing transpiration due to less surface area) An example is the Hakea tree
Theres also other biological things you could maybe look for with a microscope such as sunken stomates etc....
I hope this helps a bit
ari89
MOSSAD Deputy Director
As a prac do you expect to test the structures effectiveness at water conservation? If so its similar to the experimental design question we had in this years bio exam where we had to test if a structure was indeed assisting in water conservation.dzzlng_07 said:
You could do this by performing a number of tests on the plant. For example, with the gum tree the leaves are waxy with sunken stomates. The hypothesis would be that this allows for the leaves to conserve water in a dry environment. This can be tested by blowing a fan on a group of leaves and observing the water uptake..this can be compared to a control where there is no fan providing a dry wind simulating a natural environment.
ari89
MOSSAD Deputy Director
There is also some tree that holds water in its trunk...i thought it was the boab tree but a quick google search showed up with nothing of that nature (i think im thinking of hte boab tree because I needed to buy it in zoo tycoon)
lil_georgie_gal
Member
No you are right the Boab and bottle Trees store water in their soft fibrous trunks.