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100
Arthropods have a hard outer covering,the hard external structure that covers the outside of the body is an....
What is an Exoskeleton
100
What is an invertebrate?
What is an animal without a backbone
100
Arthropods have a hard out covering. The hard structure is called a_____?
What is an exoskeleton
100
An echinoderm's internal skeleton is called____________.
What is an endoskeleton
200
A_____ is a concentrated mass of nerve cells
what is Ganglion
200
What is a parasite that sucks other animals' blood
What is a leech
200
A ___ ___is an eye that is made of many identical, light-sensitive units
What is an compound eye
200
The_____________is a system of canals filled with fluid.
What is water vascular system
300
What is asymmetrical and has no tissues, gut, or neurons?
What is a sponge
300
What is a segment?
What is a repeating Body part
300
All echinoderms are__________animals.
What is marine animals
400
A_____is the body cavity that surrounds the gut
What is Coelom
400
In a ___________________,a simple heart pumps blood through blood vessels that empty into sinuses, or spaces in the animal's body.
What is open circulatory system
400
Adult echinoderms have_________symmetry.
What is radial symmetry
500
What type of symmetry do round worms have?
What is Bilateral symmetry
500
What has 100 to 175 segments?
What is an earthworm
500
Like sea urchins and sand dollars,__________have no arms.
What is sea cucumbers