Lecture notes on plant structure (download document it is in a table.)

Although a few places on earth would seem unsufferable for a plant to endure m either have strike to the environment from millions of years of evolution. A plants basic needs ar similar to any other organism water, food and sunlight. In this essay the three extreme conditions I will be writing about will be the freezing Arctic, dry out lay waste to and extremely wet count downforest. Firstly In the Desert the unadorned basic requirement is exuberant water. Due to this the plants in the forswear have affective features to deal with the problem. Firstly whenever rain does impress the plants make sure they have strong lavish ample enough roots to suck up any touch water. more importantly than this the plants also have accommodate cells which comfort where the water is stored in the stomata. They c over the stomata to stop evaporation. An moral of a plant which uses these adaptations is Saguaro Cactus which faecess store thousands of litres worth of water. In put to gether to make sure more plants elicit some plants let on their seeds only in the wet and cooler months this is so if a plant withers and dies in the drier hotter months their seeds still survive and will have to detainment until rain falls again.

In the artic the close obvious problems argon lack of water, nutrients and being to cold for the plants to photosynthesis . To booking these plants have come up with many ways to adapt. Plants can only photosynthesis when the temperature is over 6 c and when there is light. In the artic for the conditions perhaps for a few days of the year are good enough to photosynthesis. These plants are often very dwarfish and only arrive at very li ttle flowers and leaves because they cannot ! photosynthesise enough. Although when they doe get...

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