Virginal membrane

virginal membrane An obsolete term for hymen...

Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..

Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..

The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

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

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