Wikimedia
Wikipedia: Sponge
Wikipedia offers detailed information on sponges, or poriferans, animals of the phylum Porifera.
Other
Wonders of the Sea
Good general description of the phylum with subordinate descriptions in each of the classes.
![Science Spot: Classroom Activity: Invertebrate Classification Challenge [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Science Spot: Classroom Activity: Invertebrate Classification Challenge [Pdf] Activity")
Other
Science Spot: Classroom Activity: Invertebrate Classification Challenge [Pdf]
Guidelines and printable materials for an activity through which students match invertebrates to phylum in which they belong.
McGraw Hill
Glencoe Biology: Mollusks: Self Check Quiz
Take this five question multiple-choice question quiz over the Phylum Mollusca.
McGraw Hill
Glencoe Biology: Segmented Worms: Self Check Quiz
Try these self-checking quiz questions about the Phylum of segmented worms, Annelida.
McGraw Hill
Glencoe Biology: Arthropod Diversity: Self Check Quiz
Five self-checking, multiple-choice quiz questions about animals in the Phylum Arthropoda.
Regents of the University of Michigan
Animal Diversity Web: Cnidaria
This site by Animal Diversity Web discusses the different body types and the similar characteristics of the animals in the phylum Cnidaria.
Biology 4 kids
Biology4 Kids: Quiz: Arthropods
Take this ten-question review quiz over the Phylum Arthropoda. Read more about each question after an incorrect answer is given.
Biology 4 kids
Biology4 Kids: Quiz: Echinoderms
Take this ten-question review quiz over the Phylum Echinodermata. Read more about each question after an incorrect answer is given.
Biology 4 kids
Biology4 Kids: Quiz: Poriferans
Take this ten-question review quiz over the Phylum Porifera. Read more about each question after an incorrect answer is given.
Biology 4 kids
Biology4 Kids: Starfish & Urchins Spiny Skins
A brief overview of the Phylum Echinodermata which includes an explanation of echinoderms' water-based vascular systems.
CK-12 Foundation
Ck 12: Life Science: Sponges
[Free Registration/Login may be required to access all resource tools.] Sponges are classified in the phylum Porifera, from the Latin words meaning "having pores." Sponges are sessile, meaning they cannot move, so they filter water...
CK-12 Foundation
Ck 12: Life Science: Arthropods
[Free Registration/Login may be required to access all resource tools.] How often do you think you see an arthropod? With over a million described species in the phylum containing arthropods, chances are you encounter one of these...
CK-12 Foundation
Ck 12: Life Science: Cnidarians
[Free Registration/Login may be required to access all resource tools.] Cnidarians, in the phylum Cnidaria, include organisms such as the jellyfish and sea anemones. These animals are found in shallow ocean water. Learn more about...
CK-12 Foundation
Ck 12: Life Science: Roundworms
[Free Registration/Login may be required to access all resource tools.] The word "worm" is not very scientific. This informal term describes animals that have long bodies with no arms or legs. Worms with round, non-segmented bodies are...
BiologyWise
Biology Wise: Characteristics of Platyhelminthes
Describes the characteristics and anatomy of organisms in the phylum Platyhelminthes.
BiologyWise
Biology Wise: Information About the Hydrostatic Skeleton
Explains what a hydrostatic skeleton is and the types of organisms that have one. Describes examples from six phyla and the advantages and disadvantages of this type of skeleton.
Estrella Mountain Community College
Estrella Mountain College: Classification
Discusses many aspects of information pertainingto organism classification. Provides links to other areas in biology as well.
Palomar Community College District
Palomar College: Kingdom to Subphylum
The highest category of taxonomic classification is the kingdom. This website from Palomar College presents the five kingdoms in an easy-to-read chart and discusses the Animalia and Plantae kingdoms in depth. After reading through the...
Ohio State University
Ohio State University: Bryophyta (Mosses)
This general overview of mosses is concise, with good diagrams and illustrations. The text is written at a higher level, but the information to gain is worth taking some time.
Regents of the University of Michigan
Animal Diversity Web: Class Merostomata (Horseshoe Crab)
Find general information about the Merostomata class, which includes horseshoe crabs and the extinct eurypterids. Topics include diet, body charactersitics, and respiratory system.
E-learning for Kids
E Learning for Kids: Science: Caribbean Sea: How Can We Classify Animals?
Welcome to Hideaway Island where five pirates need to find crews for their ships. Join in and learn about animals with backbones.
University of California
Ucmp: From Starfish to Sea Cucumbers
A comprehensive site that looks at the different types of echinoderms, their life history and anatomy.
University of California
Ucmp: Introduction to Ctenophora
This is an advanced level review of the biology of these organisms. The opening photographs are worth seeing!
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