My Science Site
Life Systems: Cells, Tissues, Organs
Extensive site for teachers provides some helpful resources that pertain to plant and animal cells. Includes a microscope diagram as well as plant, animal and pond labs. Also contains links to structures and mechanisms, matter and...
Biology 4 kids
Biology4 Kids: Quiz: Animal Systems
Take this ten-question review quiz over animal systems. Read more about each question after an incorrect answer is given.
Other
Stuttgard High School: Plant Structure & Function
Site features high school-level comprehensive info on the structure and function of seed plants organized into shoot and root systems. While presented with lots of detail, clear illustrations and animations help make sense of the parts...