Read each item carefully and encircle the letter of the correct answer.
1. What is an invertebrate?
A. An animal with backbone
B. A mammal
C. an animal without backbone
D. birds
2.
This organism is an example of a(n).
A. Mollusk
C. Sponge
B. Cnidarian
D. Echinoderm
3. Sponges use pores to
A. move from place to place
B. filter food from the water
C. defend themselves
4. Arthropods have an external covering called a
C.
A. gill
exoskeleton
D. mantle
B. endoskeleton​