This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..