Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
This tutorial describes the role of gibberellin family in plants. Find out the effects of gibberellin on plant growth an..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..