what makes leaf water proof?
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Plants are covered by the epidermis, which can have a cuticle.  According to this article, the cuticle is essentially wax which makes it waterproof.
644148
H2O. Lots of it. Stay in the shade.
531419
Really doesn't matter too much.  You want enough that rain water rolls off easily.  Depending upon your area, you might also consider snow load.  Otherwise, do your own thing.
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.
411252
roots of forest canopy anchor the soil, prevent it from being washed away, by rains or swept away by winds..
1179455
Animals have a circulatory system that transports fluids, chemicals, and nutrients around within the animal body. Some plants have an analogous system: the vascular system in vascular plants; trumpet hyphae in bryophytes.\n\nRoot hairs are thin-walled extensions of the epidermal cells in roots. They provide increased surface area and thus more efficient absorption of water and minerals. Water and dissolved mineral nutrients enter the plant via two routes. \n\n\nWater and selected solutes pass through only the cell membrane of the epidermis of the root hair and then through plasmodesmata on every cell until they reach the xylem: intracellular route (apoplastic). Water and solutes enter the cell wall of the root hair and pass between the wall and plasma membrane until the encounter the endodermis, a layer of cells that they must pass through to enter the xylem: extracellular route (symplastic). \n\n\nThe endodermis has a strip of water-proof material (containing suberin) known as the Casparian strip that forces water through the endodermal cell and in such a way regulates the amount of water getting to the xylem. Only when water concentrations inside the endodermal cell fall below that of the cortex parenchyma cells does water flow into the endodermis and on into the xylem.\nXylem and Transport \nXylem is the water transporting tissue in plants that is dead when it reaches functional maturity. Tracheids are long, tapered cells of xylem that have end plates on the cells that contain a great many crossbars. Tracheid walls are festooned with pits. Vessels, an improved form of tracheid, have no (or very few) obstructions (crossbars) on the top or bottom of the cell. The functional diameter of vessels is greater than that of tracheids.\n\nWater is pulled up the xylem by the force of transpiration, water loss from leaves. Mature corn plants can each transpire four gallons of water per week. Transpiration rates in arid-region plants can be even higher. Water molecules are hydrogen bonded to each other. Water lost from the leaves causes diffusion of additional water molecules out of the leaf vein xylem, creating a tug on water molecules along the water columns within the xylem. This "tug" causes water molecules to rise up from the roots to eventually the leaves. The loss of water from the root xylem allows additional water to pass throught the endodermis into the root xylem.\n\nCohesion is the ability of molecules of the same kind to stick together. Water molecules are polar, having slight positive and negative sides, which causes their cohesion. Inside the xylem, water molecules are in a long chain extending from the roots to the leaves. \n\nAdhesion is the tendency of molecules of different kinds to stick together. Water sticks to the cellulose molecules in the walls of the xylem, counteracting the force of gravity and aiding the rise of water within the xylem. \n\nCohesion-Adhesion Theory\nTranspiration exerts a pull on the water column within the xylem. The lost water molecules are replaced by water from the xylem of the leaf veins, causing a tug on water in the xylem. Adhesion of water to the cell walls of the xylem facilitates movement of water upward within the xylem. This combination of cohesive and adhesive forces is referred to as the Cohesion-Adhesion Theory.\n\n\nGuard Cells Regulate Transpiration\nIn most environments, the water concentration outside the leaf is less than that inside the leaf, causing a loss of water through openings in the leaf known as stomata (singular = stoma). Guard cells are crescent-shaped cells of the epidermis that flank the stoma and regulate the size of the opening. Together, the guard cells and stoma comprise the stomatal apparatus. The inner wall of the guard cell is thicker than the rest of the wall. When a guard cell takes up potassium ions, water moves into the cell, causing the cell to become turgid and swell, opening the stoma. When the potassium leaves the guard cell, the water
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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 ..
141965
water resistant means you can splash water on it and it will be fine. But do not submerse it in water. Waterproof means you can submerse it in water. All the seals are tight.
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let me try:\n1)Save Plants to save Life.\n2)Protect plants and animals and protect yourself.
675097
Yes waterproof but not lightening proof
278197
none, nil, nada, zip\n\nalcohol dehydrates and plants need water to grow.
1156979
anyway, as u know,  any leaf will float on water because the cells (mesophyl) have spaces all between them. the inside of a leaf is like a heap of baloons pressed together a little - they touch only by sides. this is to allow passage of air necessary to photosynthesis, too. the oily appearance of the "skin" , the epidermis of the leaf is good to make it last and live long and not go rotten in water. some plants that float really have one side hydrophilic and the other hydrophobic so that they dont flip the other way up, which would be undesirable. write me email if u have other questions as u study more of this
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Tissues of vascular plant leaves: Leaves are cloaked by a single layer of cells called the epidermis. It protects the leaf from physical damage and pathogens. A transparent, waxy, colorless cuticle coats the epidermis. The stomata ( small holes) are located on the lower epidermis of the leaf. The stomata allow gases and water vapor into and out of the leaf. Each stoma is controlled by two bean shaped guard cells. The palisade mesophyll is a layer of elongated cells containing chloroplasts found just under the upper epidermis. The majority of photosynthesis takes place within this area. Just below the palisade mesophyll is an area of loosely packed parenchyma called the spongy mesophyll. The spongy mesophyll contains air spaces in which gases circulate. The petiole of the leaf connects the blade with the stem. The vascular tissues pass through with the xylem positioned in the top section of the vein while the phloem occupies the lower section.
269535
They don't lose their leaves in the fall !!!
111028
wrap yourself in ducktape and connect ummteen straws together and insert straws into mouth so that you can  breathe.  you wont be water proof but you will be sucking on a straw.
754229
Rain water but not acid rain water.  Since I don't get a lot of rain in my state I usually used purified water mixed with miracle grow.  If you want your plant to grow faster make sure you give it enough light as well.
830153
Well, you could use a turtle shell to boil the water. Cover the top with leaves and mud to seal it, leaving a hole for a bamboo vent to collect the steam. Using bamboo as tubing, that would also help the condensation, create long enough tubes to have the water condensate and then fall into another turtle shell or coconut shells.