Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig and the origin and development of stems. Also included are the different modified stems that carry out special functions. ..
Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this tutorial, various plant processes are considered in more detail. It also includes topics on leaf arrangements, leaf types, leaf structure, leaf color, abscission, and importance to humans...