You will also like...
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..