Discusses many aspects of information pertainingto organism classification. Provides links to other areas in biology as well.

Explore the diversity and taxonomy of the plant kingdom.

Explains how bacteria are classified by gram staining for medical purposes, and how they are classified by scientists based on Bergy's Manual of Systematic Classification. Also presents a list of hundreds of bacteria organized into their...

Explore the classification of living things in this online, college-level textbook. Learn about taxonomy and its history through diagrams and descriptive information.

Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.

Instructional module focusing on Charles Darwin's theory of Descent with Modification. Discusses how slight changes from parent to offspring create variation and potentially create new species over time. Site also includes an interactive...

This comprehensive study guide covers the main terms and concepts needed for a biology unit on the structure and classification of fish.

Describes the classification, structure, habitat, lifespan, method of reproduction, and diet of Euglena, a unicellular organism.

Describes the main phyla in the kingdom Animalia.

Find out about the kingdom of fungi. See full-color diagrams and microscopic photographs as you learn about the classification of this group of organisms.

What do centipedes and crabs have in common? What's so special about a backbone? Check this site out from The Franklin Institute if you are interested in biology and classification.

Discusses the characteristics of Phaeophyta or brown algae, where it is found, its classification, some facts about it, and its uses.

Use this illustrated overview of invertebrates for review.

This lesson plan focuses on differences in the amino acid sequence of hemoglobin and myoglobin proteins. They use the number of differences to create a phylogenetic tree.

This lesson plan requires students to analyze DNA restriction maps to determine the differences in the sequence for several primates and humans. They then use the information to create a cladogram.

Describes roundworm characteristics, including their classification, habitat, reproduction, infection of humans and pets, and how they are transmitted to other hosts. Includes some examples and the diseases they cause.

Photographs, informative tables, and illustrated diagrams help explain the diversity of the plant kingdom in this college-level textbook.

Provides information about Spirogyra, a type of algae. Discusses characteristics, classification, cell structure, method of reproduction, and life cycle.

Great lesson plans covering a wide-range of science-related subjects. A wonderful resource for wonderful teachers!

Stanford University offers an excellent review of the biology and ecology of sea urchins. After reading the text, try the reproduction/survival game!

Explains the characteristics of gram-negative and gram-positive bacteria and provides a table comparing them based on different criteria.

One way plants have been classified has been based on the number of cotyledons in the seeds. The differences between monocots and dicots are listed along with some helpful facts.

This is an advanced level review of the biology of these organisms. The opening photographs are worth seeing!

Describes the characteristics of Archaea, Bacteria, and Eukarya, the three domains of life.