Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
