Describes stomata and their functions in photosynthesis, transpiration, and regulation of water retention and loss by plants.

Student teams learn about engineering design of green fluorescent proteins (GFPs) and their use in medical research, including stem cell research. They simulate the use of GFPs by adding fluorescent dye to water and letting a flower or...

A scavenger hunt where students find and study examples of leaf adaptations for different environments. This activity is designed to be used on a visit to botanical gardens or greenhouse but could be adapted and used with specimens in...

This site provides detailed information on chloroplasts. Explains the many duties that chloroplasts perform and why they are so important. Good diagrams.

In this unit you will learn about the origin of the cells and their differences. It includes 15 interactive activities.

In this unit you will be introduced to the complexity of living things. It also reviews the kingdom of nature, differentiating between their main features from those who are microscopic unit-cellular to the multi-cellular visible to the...

Peruse this site and discover some interesting facts about stems as well as learn what its' function is.

This is the reproduction chapter from an online text, courtesy of the Forest Biology Department of Virginia Tech. Learn about trees, their flowers, and other details of their reproductive cycle.

Valentin Hammoudi investigates why Californian Sequoia trees have limited heights.

In this lesson plan site, each student is assigned a cell part to research, create, and place inside of a clear plastic drop cloth (the cell) the size of one-half of the classroom ceiling.

Discovered in 1982 near the village of Sveshtari, this 3rd-century BC Thracian tomb reflects the fundamental structural principles of Thracian cult buildings. The tomb has a unique architectural decor, with polychrome half-human,...