Invertebrates Quiz

What percentage of all animals are invertebrates?

• A) 97%

• B) 75%

• C) 50%

• D) 85%

Which characteristic is common to all invertebrates?

• A) They have a backbone

• B) They do not have a backbone

• C) They are all aquatic

• D) They all have exoskeletons

How many phyla of invertebrates are there?

• A) Nine

• B) Seven

• C) Ten

• D) Twelve

Which subphylum does the horseshoe crab belong to?

• A) Trilobita

• B) Chelicerata

• C) Mandibulata

• D) Crustacea

Which of the following is NOT a member of the subphylum Mandibulata?

• A) Millipedes

• B) Centipedes

• C) Spiders

• D) Crustaceans

What does the word "arthropod" mean in the context of the phylum Arthropoda?

• Jointed body

• Jointed leg

• Hard shell

• Segmented body

Which of the following is NOT a characteristic of arthropods?

• Periodic ecdysis

• Jointed appendages

• Closed circulatory system

• Hard exoskeleton

What type of respiratory system do terrestrial arthropods like insects and spiders use?

• Gills

• Lungs

• Tracheae

• Book lungs

Which subphylum of Arthropoda possesses chelicerae and no antennae?

• Crustacea

• Mandibulata

• Chelicerata

• Trilobita

What type of appendages do crustaceans have?

• Mandibles

• Chelicerae

• Chelipeds

• Antennae