BiologyWise
Biology Wise: Stomata Function
Describes stomata and their functions in photosynthesis, transpiration, and regulation of water retention and loss by plants.
BiologyWise
Biology Wise: Types of Photosynthesis
This resource describes three different types of photosynthesis that take place in plants and the plant characteristics and environmental conditions that determine which type takes place.
Treehut
Suzy's World: How Does a Tree Eat?
Use site from Suzy's world, which is a personal site from Suzy Cato, in order to learn how plants and trees "eat." Content includes fun facts and great experiment.
Ohio State University
Ohio State University: Plant Transpiration & Translocation
This is a good explanation of plant water balance issues and carbon fixing cycles. Transpiration processes are explained well with links to additional information.
Ohio State University
General Plant Biology: Leaves
Discusses major aspects of leaf structure and function. Contains examples of modifications of leaf structure and function.