describe and explain the different leaf shapes found on the plants that dominate in the desert, tropical rain forest and boreal forest. briefly explain the reasons for these different shapes.

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11-10-2017
Biology

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describe and explain the different leaf shapes found on the plants that dominate in the desert, tropical rain forest and boreal forest. briefly explain the reasons for these different shapes.

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The evolution of the leaves shape is driving by the conditions in the ecosystem in which the plant evolved. Most of the plants of the desert don’t have leaves to avoid loss of water and optimize the energy production. Some of the desert plants that that have leaves, evolved a coat of densely packed hairs to reflect sunlight and help them catch moisture in the night. In the tropical rain forest on the other hand have large leaves and flowers to attract more pollinators, also many of them evolved waxy coatings on their leaves to help the excess moisture drain. They also have. The plants in the tundra usually have small rounded shape leaves to avoid water and heat loss.