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Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

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ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

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Control of Body Movement

Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

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Bryophytes

Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..

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Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

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This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..