The Versatility and Adaptation of Plants for Survival Essay

The Versatility and Adaptation of Plants for Survival In many ways, plants are far more versatile and successful to life on earth than animals and have been here for far longer. They were the first to colonise this planet and without them we would not exist, for we are totally dependent on them. Even today with all our technology they continue to amaze us with their ability to inhabit places we humans could not survive, from the frozen Antarctic to the intensity of a volcanic spring, plants utilise their environments to their own advantage and evolve to survive the harshest of landscapes. A plant needs four basic things to survive, water, warmth, light and minerals and any place that can provide even a little of these essential†¦show more content†¦Yet three hundred miles from this place were no living thing could survive for any length of time, there are plants, algae, living together with fungi on the tips of mountains, which protrude through the snow. These hardy plants are mostly in a dormant state, the severe temperatures rising only a couple of days a year just enough to enable the Lichen to enliven their body chemistry and to photosynthesise. Some Lichen is black and this enables them to retain what little of the sun’s heat they can to melt the snow around them. Some grow on rocks that are frequented by birds as their droppings provide a rich source of nutrients. This activity however happens in the warmest part of the summer and as cold winter sets in they return to their dormant sleep. Other algae manages to survive in the snow itself, they live in between the individual flakes just below the surface and during the summer their chlorophyll is disguised with a red pigment to protect the algae from the ultra-violet rays of the sun, as they shine more strongly through the snow. As the sun shines however, it melts the snow and does give them the liquid water they need. In the winter, when the snow is below zero the algae manufacture a kind of anti-freeze which prevents their bodies from freezing and they are invisible below the surface, but when the summer arrives once more they launch themselves forward with microscopic beating hairs and move closer to the surface and the light. At theShow MoreRelatedDarwinism : The Time Machine2097 Words   |  9 Pagespopulation sizes which is tested by the limitations of geography and natural resources that makes it impossible for an infinite number of beings to survive. The limitation in resources results in species experience a â€Å"struggle for existence,† creating a survival competition. In this theory, Darwin stated that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual s ability to compete, survive, and reproduce. 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