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Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

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

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This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..

Physiological Homeostasis
Physiological Homeostasis

Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..

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Lotic Communities & Animals

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Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...