Cnidarians, Roundworms and Flatworms
The type of body cavity that Nematodes possess
Pseudocoelom
This anatomical feature functions to store food
Crop
Most groups of mollusks have this type of circulatory system.
An open circulatory system
The hard, protective covering of all arthropods
Exoskeleton
This is the internal system of fluid-filled tubes found in echinoderms.
The Water-Vascular System
The open space in the center of the intestines is called
A Lumen
Each segment of the Annelid has this anatomical feature to help with movement and locomotion
Setae
No matter what gastropods eat, they all use this organ, a flexibile ribbon of tiny teeth.
Radula
This anatomical feature is what gives arthropods flexibility and the ability to move.
Jointed Appendages
These line the underside of a sea star's arms and act like tiny suction cups.
Tube Feet
This anatomical feature of Platyhelminthes are similar to the segments found on Earthworms
Proglottids
This is an excretory organ for eliminating liquid wastes
Nephridia
These mollusks have excellent vision and large brains that enable them to remember what has been learned.
Cephalopods
As a crab grows in size its exoskeleton cannot expand, therefore this process occurs.
Molting
The type of skeleton that Echinoderms possess
Endoskeleton
This system of the Cnidarians can be compared to the digestive tracts of Annelids
Gastrovascular cavity
How do earthworms breathe?
Through their skin
Bivalves obtain food in this way
Filter Feeding
This is the tagma to which an insect's wings and legs are attached.
Thorax
Echinoderms possess this type of symmetry.
Radial Symmetry
This system if Nematodes can be compared to the digestive tract of Arthropods
Mentary Canal
Earthworms produce sperm and eggs in the same body. What is this called?
Hermaphrodites
In addition to a soft body, mollusks have this thin layer of tissue that covers its internal organs.
The Mantle
The two type of stomachs at crayfish possess
Cardiac and Pyloric stomach
The class that Brittle Stars belong too
Class Ophiuroidea