1. Which of the following is the key identifying feature of the arthropods?

A. Body segmentation.
B. Metamorphosis.
C. Exoskeletons.
D. Jointed appendages.

2. The circulatory system of a typical arthropod is best described as

A. open with a ventral pumping vessel.
B. open with a dorsal pumping vessel.
C. closed with a ventral pumping vessel.
D. closed with a dorsal pumping vessel.

3. Centipedes are members of class

A. Chilopoda.
B. Diplopoda.
C. Insecta.
D. Uniramia.

4. Millipedes are known for their

A. single pair of legs per segment and herbivorous lifestyle.
B. single pair of legs per segment and carnivorous lifestyle.
C. double pair of legs per segment and herbivorous lifestyle.
D. double pair of legs per segment and carnivorous lifestyle.

5. The major locomotory structures of an insect are attached to its

A. head.
B. thorax.
C. cephalothorax.
D. abdomen.

6. Which of the following lists a grasshopper’s mouthparts in an anterior to posterior sequence?

A. Labium ­ mandibles ­ maxillae ­ labrum.
B. Labium ­ maxillae ­ mandibles ­ labrum.
C. Labrum ­ maxillae ­ mandibles ­ labium.
D. Labrum ­ mandibles ­ maxillae ­ labium.

7. To which body system do ocelli belong?

A. Excretory.
B. Respiratory.
C. Reproductive.
D. Nervous.

8. Which of the following BEST describes the life cycle of a moth?

A. Egg ­ nymph ­ adult.
B. Egg ­ larva ­ nymph ­ adult.
C. Egg ­ larva ­ pupa ­ adult.
D. Egg ­ pupa ­ adult.

9. Of the following, the BEST description of the role of Malpighian tubules is to conduct metabolic wastes from

A. tissues to the intestines.
B. tissues to the kidneys.
C. kidneys to the excretory openings.
D. kidneys to the spiracles.

10. Which of the following will not enable one to distinguish gender?

A. Presence of an ovipositor on a grasshopper.
B. Storage sacs on the ends of the pedipalps of a spider.
C. The length of swimerettes on a crayfish.
D. The thickness of the carapace of a crab.

11. Which class of arthropods has branching appendages?

A. Trilobite.
B. Uniramia.
C. Arachnida.
D. Crustacea.

12. A grasshopper’s tracheal tubes are attached to its

A. lungs.
B. spiracles.
C. gills.
D. book lungs.

13. Which system does a green gland of a crayfish belong to?

A. Excretory.
B. Digestive.
C. Reproductive.
D. Circulatory.

14. How many stages are there in complete metamorphosis?

A. Two.
B. Three.
C. Four.
D. Five.

15. What is the function of uropods and a telson?

A. Excretion.
B. Reproduction.
C. Locomotion.
D. Digestion.

16. Spiders obtain oxygen through their

A. gills.
B. cuticles.
C. book lungs.
D. tracheal tubes.

17. The “fangs” of a spider are more technically known as

A. chelicera.
B. pedipalps.
C. chelipeds.
D. carapaces.

18. Insects that transmit diseases are
A. pathogens.
B. parasites.
C. vectors.
D. virulent.

19. Which of the following has a nymph stage in its life cycle?

A. Grasshopper.
B. Moth.
C. Mosquito.
D. Fly.

20. People who enjoy eating lobster are usually eating the muscles of its

A. cephalothorax and chelipeds.
B. carapace and abdomen.
C. telsons and uropods.
D. cheliped and abdomen.