why plants can survive?
115131
right! plants have the ability to produce their own food. They get essential nutrients from the sun's rays and from the soil. When plants get certain elements and/or nutrients from its major surroundings, it is therefore able to convert the nutrients into food; making the plant survive with no dependence from us.
737971
Plants play a vital role in our living.\nThey are the very source of Oxygen that make life possible.\n"Plant a Tree to Save a Life."\nIf you protect a tree, it will protect you.
876879
Plants do not take in Oxygen. They take in Carbon Dioxide (the main gas we exhale) and produce Oxygen.
579866
Everything today survives.\nAnd that is not the way nature intended it to be.\nWe keep sick people alive who normally wouldn't make it.\nWe keep children alive who would have died at birth and now are living breathing little vegetables.\nAnd that is supposed to be progress?\n\nOk,  I stop now.  I think you were looking for somewhat a different answer....smile
1149490
Like most carnivorous plants, pitcher plants live in bogs and wetlands. They survive in conditions with little to no ground nutrients by digesting insects or any other proteins that fall into their cups. It's greatest importants to humans is for research as a plant that has special abilities. In nature, it survives conditions that few other plants can and its body later provides nutrition to follower species that need more nutrients.\n\nAlthough I'm giving an alternative medical site that lists pitcher plant and uses, I would not recommend using it this way. The plants live in a fragile environment and are not common.
474366
Because sun is needed for plants to go through photosynthesis, (this is what makes it turn green and grow). and so humans can eat it.. giving them the energy
786061
Homeostasis.\n\nFor more specifics about plants look at the bottom of the second source.
828421
Animals are supported by a skeleton, made of bone.  Plants don't have skeletons, they use a cell wall to give them support.  Such walls wound make movement impractical.
1089590
Because in space all climates are specifically maintained and regulated, plants grow, live, digest food, and gather energy in different ways than they do on earth. Also in space, plants are studied in Zero gravity. Scientists do this to examine the internal forces within a plant to see if gravity negatively or positively affects a plants life cycle.
184028
Not all plants have roots. The ones that do are the vascular plants which need to take in nutrients passively by means of capillary action and concentration gradients. The plants need their roots to reach down far enough into the vadose zone to get water during times of the year when there isn't much rain and the water table is dropping.\n\nAs already mentioned, roots also stabilize the plant to allow it to grow tall and get sunlight. In many places, competition for sunlight is intense so plants have to grow tall and hold themselves up. Thus, the need for roots.
1167265
The plant kingdom, one of four eukaryotic kingdoms, is composed of multicellular, autotrophic organisms that photosynthesize to fix inorganic carbon (from atmospheric CO2) into organic molecules. Plants are the foundation of all terrestrial habitats, and serve as terrestrial Earth’s primary autotrophs, making organic molecules that will cycle through the food webs of most ecosystems. The photosynthetic capabilities of plants ultimately allow all terrestrial members of the animal kingdom to survive.\n\nOne hallmark of plant cells is the cell wall, which, in contrast to cell walls of single-celled organisms, is made of cellulose. The cell walls provide support for plant cells, as well as support and cohesiveness for plant tissue. Unlike the plasma membrane, the cell wall is not a semipermeable membrane, and so the shared cell walls between adjoining plant cells must have openings, plasmodesmata, to allow material transport and communication. Another distinguishing feature of plant cells is the large central vacuole, which stores a water reserve as well as essential chemicals, waste products of cellular metabolism, and sometimes other species-specific functions, such as storage of poisons or flower pigments. The central vacuole can also aid in cell growth by absorbing water.\n\nExcluding a few photosynthetic protists and cyanobacteria, plant cells are the only cells that contain chloroplasts. These organelles carry out the processes of photosynthesis, converting light energy into chemical energy and storing it as sugar. As well as producing food for ecosystems, photosynthesis releases oxygen molecules as byproducts, which replenish atmospheric oxygen used in cellular respiration and form a layer of ozone, O3, which shields the earth from solar ultraviolet rays.\n\nPlants probably evolved from multicellular green algae called charophytes and were the first multicellular organisms to colonize land. In order to do this, plants had to evolve several new characteristics in the form of distinct, specialized organs, which protists and algae lack. First of all, plants need to have a form of anchorage in the ground and rigid stem tissue for support. Thus, plants have developed root structures, which, in addition to anchoring a plant in the ground, allow the plant to take up chemical nutrients from the soil. Cellulose-containing cell walls developed in plant cells to maintain a form of rigidity in the part of the plant above ground. These account for the stiffness of plant stems and from the hardness of wood. Marine algae, which are suspended in water and can absorb nutrients from all around, have neither of these structures. Also, to prevent water loss in a terrestrial environment, plants evolved a waxy cuticle, which covers stem and leaf surfaces. Gases for photosynthesis can not diffuse across this cuticle, so tiny pores called stomata are present in the cuticle.\n\nBecause plants have organs that serve different functions, they must have systems to distribute necessary substances throughout the plant. Sugars, produced in photosynthesis, must be distributed to the body and roots of the plant that do not photosynthesize. Water and nutrients from the soil, taken up by the roots, must also make their way into the plant body and leaves. To perform these essential functions, plants contain a vascular tissue network, which consists small tubes running throughout the plant. There are two types of vascular tissue: xylem, which are small tubes dead cells that transport water and minerals up from the roots, and phloem, which are living cells that distribute sugars produced in photosynthesis.\n\nAlso characteristic of plants, as well as some algae, are gametangia that protect gametes. These are pockets of cells that protect the egg cell, and where the egg is fertilized.\n\nPlants have a life cycle unlike that of any animal, fungus, or bacteria. Probably a trait inherited from protistan (algal) ancestors, diploid and haploid generations alternate
1101341
Plants are the true essence of life. Without them, no life in this world could be possible. When life appeared on earth, plants were the first to appear and then changed carbon-dioxide to oxygen and thus made life possible on earth. Even economically they provide us with lots of products. They control the climate on earth. So, with so many utilities they really are the most important thing on earth. So we must study their structures properly because that will help us sustain them on earth and in that way sustain ourselves too.
12372
there is no real answer to that question.  there are many theories out there but my favorite and most logical is that plants are more physicaly delacate then we are.  you can kill a plant by simply puting it in a shaded area verses a sunny area, or it can get chocked out and die by simply not having enogh room.  so if you have a gardener who is singing all the time,  he is probly less stressful and more gentel to his plants.  also takes the time to do it right and give the apropiate care for the plant.  verses a gardner who is in a hurry and realy dosen't care, he is stressed out and his plants suffer for it.
154834
Because trees and plants take in carbon dioxide and put out oxygen.
829361
They can't know, just like we can't.  \n\nThey may be able to read cues and clues like we do, but they are not prognosticators.  \n\nGenerally plants and animals are adapted to the area they live in, and know how to prepare either from experience or even genetic cues.  Also, they always seem to prepare for the worst.  I've seen trees in warm California lose there leaves because they thought winter was coming.  It was, but they could have easily grown through the mild winter.  They were a species adapted to a different climate.\n\nGood question.  It shows you're thinking about your world!
279291
there are many plants on earth some of them are tall others are short it's not about escaping yes god make them that way but the question is why\nin simple words we can say to survive the tall trees can have more sun energy which it need it to live\nit's not about roots cuz some tall trees have short root but spread horizontally others spread vertically\nthere is a relation ship between the size of the root and the size of the green part not the tall of the tree
915751
It would post probably be sunlight.......some plant organisms may survive without water for long periods of time, such as ones in the desert....... but sunlight is required for green plants to make food  which unlike for humans......... food is the bigger priority than water