what makes a leaf water proof?
831428
The upper and lower epidermal cell layers, the waxy cuticle layer over the epidermal layers.  The stomata and their associated guard cells.
289845
Yes, they have stoma which open and close pores on leaves.  Stoma are sensitive to moisture levels.  The leave turning thing is probably a different mechanism.  But yeah plants are very sensitive to water levels, esp in desert areas.  The leaves need water for photosynthesis so it makes sense that they have specialized to capture the most water.
678873
One of the difficulties that water plants have that land plants do not is gas exchange.  Plants need to be able to get air to their roots and aquatic plants usually do this through special tissues that lead to the air.
90328
I believe if you cover the leaves on the branch, still attached to the tree, with a plastic bag. Tie the end of the plastic bag shut with string or a rubber band so the leaves are enclosed inside the bag. When the moisture from the leaves evaporate it will collect in the bag, safe to drink.\nCome on already.
1030723
stomata are minute openings on the epidermis of leaves which is surrounded by guard cells.the strucutre of a guard cell :\nguard cells generally have thick and non elastic walls towards the pore and thin and elastic walls on the opposite side.\nthe mechanism of stomatal transpiration depends upon the opening and closing of stomata.stomata opens during day time and close at night.the the opening and closing of stomata dependson to how much water is present in the gaurd cells.when there is more water,the guard cells become turgid and the stomata opens and when the amount of water decreases the guard become flaccid and stomata close. \n\nthere are two theories pertaining to this , steward's starch hydrolysis theory and K + pump theory.\nu can surf the net to find out more on this if u want to .
1144744
Excellent question.  \n\nThis is due to a process called osmosis.  Osmosis is the net movement of water molecules in and out of a partially permeable membrane (a kind of barrier that only allows certain molecules to pass through), from a region of their higher concentration to a region of their lower concentration.\n\nIts pretty self-explanatory here.  Since the concentration of water is higher inside than outside of the plant, water moves out of the plant, resulting in the plant dehydrating and dying.
590152
Leaves have characteristics for many reasons. It helps them survive cause of the shape of the leaf. Over the years, the leaves have discovered the easiest way for water to get to the tips of the leaves, and throughout the leaf itself. Some leaves excrete some gooey substance so no predators will eat their leaves. They shape themselves for water intake, some have a waxy substance on them for safety, some are simple, others are very detailed. I still don't know why they take the shape they do. The leaves will change colour according to the season, because basically they get tired from constantly performing photosynthesis all during the summer. So, in fall they take a break, and stop photosynthesizing. That's why they change colour in the seasons. It really is quite interesting. I will let you know the pages I used. One is a little kids site, and the other is an adults site. GOOD LUCK AND GOD BLESS YOU!
921352
They store water inside the shoots,they also have small leaves so they conserve moisture.
109912
The plant will want water that causes it to work the least.\nI'd say, then, that lukewarm (room temp.) is best.\nCold water must be warmed up, and hot water (damaging the plant, burning the roots...bad) must be cooled down.
470626
Well when I was at camp as a kid what we did was wrap a bag around a tree limb.  You know like the big garbage bags.  during a day a good amount of water collects.  Another way is to place a plastic sheet over a thing of salt water....during the day the salt water evaporates onto the plastic and runs down.  That's drinkable too....need to make sure to catch the run off though.
644148
H2O. Lots of it. Stay in the shade.
952055
use a real tree\nbut make sure leaves must not be withered\nan wrap with ligth bulbs..\nand use cotton wools as snow
506770
just something you use to dry plants and keep their distinguishable characteristics...\n\nall you need to do layout some newspaper on a hard flat surface and lay your plant down put newspaper on top (this absorbs the moisture so your plants won't mold) and then put something heavy on top and leave it be for about a week or two ..
487819
twigs usually have water. Its possible to dry them out.\n\nRocks can be porous enough to trap water inside them.
626897
Something has to keep out the rain!
926593
There is a search engine called "Altavista.com" not too many people uses but has a lot of information no one else have, just try maybe you can find it there, just search for leaf key, luck..☺
15201
The leaves on any tree/plant work mainly as the energy center to enhance the food supply of the plant.  Photosynthesis is the primary action within the leaves, not the storage of water.  The roots, and the trunk of the tree maintain the water.\n\nSo when a tree looses it's leaves it simply maintains it's primary surface, ie trunk and branches, by storing the water within the lower roots, and within the innermost section of the trunk.