Mollusks
Snails and Slugs
Echinoderms
Arthropods
Crust., Arach., Insects
100
In addition to a soft body, mollusks have this thin layer of tissue that covers its internal organs.
What is the mantle?
100
No matter what gastropods eat, they all use this organ, a flexibile ribbon of tiny teeth.
What is a radula?
100
This is the internal system of fluid-filled tubes found in echinoderms.
What is the water vascular system?
100
This is the waxy waterproof covering of an arthropod.
What is the exoskeleton?
100
Crustacean larva develop into adults through this process.
What is by metamorphosis?
200

Most groups of mollusks have this type of circulatory system.

What is an open circulatory system?

200
Gastropods usually move in this way.
What is creeping along on a broad foot?
200
These line the underside of a sea star's arms and act like tiny suction cups.
What are tube feet?
200
These give arthropods flexibility and the ability to move.
What are jointed appendages?
200
All crustaceans share this type of body structure.
What is having two or three body sections, five or more pairs of legs, and two pairs of antennae?
300

This is the largest group of mollusks.

What are Cephalopods?

300
Bivalves obtain food in this way.
What is filter feeding, straining tiny animals and plants from the water?
300
These are the three characteristics of all echinoderms.
What is being invertebrates, having an internal skeleton, and a system of fluid-filled tubes called a water vascular system?
300
As a crab grows in size its exoskeleton cannot expand, therefore this process occurs.
What is molting?
300
All arachnids share this type of body structure.
What is having two body sections, four pairs of legs, and no antennae?
400
This group of mollusks do not move quickly and most larva swim or float through the water.
What are bivalves?
400
This is the reason pearls form in an oyster.
What is sand becoming lodged between a bivalve's mantle and shell and the mantle then produces a smooth pearly cover to coat the sand or grit?
400
These are the four major groups of echinoderms.
What are sea stars, brittle stars, sea urchins, and sea cucumbers?
400
An arthropod may have up to three of these sections.
What is the head, midsection and the hindsection?
400
This is the section to which an insect's wings and legs are attached.
What is the thorax?
500
These mollusks have excellent vision and large brains that enable them to remember what has been learned.
What are cephalopods?
500
Biologists classify mollusks into groups based on these four (4)physical characteristics.
What is the presence of a shell, the type of shell, the type of of foot, and the type of nervous system?
500
Echinoderms posess this type of symmetry.
What is radial symmetry?
500
These six (6) characteristics of arthropods are shared by ALL arthropods:
What is invertebrates, an external skeleton, a segmented body, jointed appendages, bilateral symmetry, and an open circulatory system?
500
These are the stages of an insect's complete metamorphosis.
What is egg, larva, pupa, and adult?
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