Zoology Unit 10 Test

Which is a proper group of arthropods?

• Leeches, bristle worms, earthworms

• Insects, spiders, lobsters, millipedes

• Octopuses, snails, clams

• Ants, mites, crabs, sea stars

How many species of arthropods have been discovered so far?

• Over 100,000

• Over 1 million

• 65,000

• 15,000

• 800

Which is true of arthropods?

• They are triploblastic deuterostomes that are coelomates

• They are triploblastic protostomes that are coelomates

• They are triploblastic protostomes that are pseudocoelomates

• They are diploblastic protostomes that are coelomates

• They are triploblastic deuterostomes that are pseudocoelomates

What type of symmetry do most arthropods have?

• Asymmetry

• Radial symmetry

• Bilateral symmetry

What three features do all arthropods share?

• Exoskeleton; jointed appendages; segmented body

• Breathe with gills; large coelom; mandibles

• Maxillae; wings; an abdomen

• Antennae; compound eyes; swimmerets

Which tagmata does a tarantula have?

• Cephalothorax and head

• Cephalothorax and abdomen

• Head and many trunk segments

• Head, thorax, abdomen

• Head and abdomen

Which tagmata does a crayfish have?

• Cephalothorax and head

• Cephalothorax and abdomen

• Head and many trunk segments

• Head, thorax, abdomen

• Head and abdomen

What substance is the exoskeleton of an arthropod composed of?

• Calcium carbonate

• Chitin

• Cartilage

• Bone

• Hormones

Which is not an advantage of the exoskeleton?

• Protection

• Structural support

• Counterforce for the contraction of muscles

• Waterproof

• Flexibility

Which feeding method is not an option amongst arthropods?

• Hunting and killing prey

• Scavenging for prey on the ocean floor or in the leaf litter

• Filter feeding

• Diffusion of nutrients directly through the exoskeleton

• Obtaining nutrients from a host as a parasite