Test Date is: __________________________
CCP Biology Study Guide: Invertebrates
The test will consist of multiple-choice, matching, labeling a diagram of a worm and short answer responses
to interpreting an experiment.
The textbook is organized as a systematic comparison, not as an organism to organism comparison, so
information is spread around in chapters 25-29. Your notes, worksheets and reviewing the PowerPoints
(available in the resources section of the web page) are more useful for this test.
Sponges and Cnidarians
You should be able to:
 Define: invertebrate, parasite, cephalization and nematocyst.
 Identify characteristics of organisms classified as animals.
 Differentiate three types of symmetry animals have and give examples of phyla and/or organisms that
show each.
 Name the phylum that sponges belong to and list characteristics of them.
 Describe characteristics of cnidarians include body form, and feeding methods.
Worms and Mollusks
You should be able to:
 Define: hermaphrodite, dorsal, ventral, septum, setae, crop, gizzard, ganglion (cerebral), mantle,
siphon and radula.
 Compare acoelomate, pseudocoelomate and coelomate body plans, including advantages and
evolutionary advancement.
 Describe and compare characteristics of flatworms, roundworms and segmented worms, especially in
terms of their role in the environment and importance to other organisms.
 Label parts of an earthworm on a diagram and explain the function of those parts.
 Describe general characteristics of mollusks and specific characteristics of the three classes of
mollusks.
 Explain the importance of mollusks to the environment and other organisms.
Arthropods and Echinoderms
You should be able to:
 Define: exoskeleton, chitin, tracheal tubes, book lungs, gills, cephalothorax, thorax, abdomen,
chelicerae, pedipalps, metamorphosis, pheromone, endoskeleton, water vascular system, tube foot.
 Describe general characteristics of arthropods and specific characteristics of crustaceans, chelicerates
(arachnids & horseshoe crabs) and insects.
 Explain the importance of insects to the environment and other organisms.
 Describe ways in which insects communicate with each other.
 Describe general characteristics of echinoderms and specific characteristics of brittle stars, sea stars
and sea cucumbers.
 Explain the importance of echinoderms to the environment and other organisms.