ARTHROPODS AND ECHINODERMS

All echinoderms have a body plan with ______.

• asymmetrical form

• bilateral symmetry

• radial symmetry

• spherical symmetry

Unlike other arthropods, arachnids have ______ legs.

• 4

• 6

• 8

• 10

______ make up the largest group of complex invertebrates.

• Arachnids

• Crustaceans

• Insects

• Worms

The lightweight ______ covers, supports, and protects the arthropod’s body with material that also keeps the body from drying out.

• exoskeleton

• mantle

• shell

• skin

All arthropods DO NOT have ______.

• a body cavity

• a mouth and anus

• a nervous system

• three body segments

What is one trait that all Arthropods have in common?

• complex nervous system

• carnivorous

• exoskeleton

• all of the above

What are the other two traits that arthropods share?

• segmentation

• 6 legs

• wings

• jointed and paired appendages

This picture shows an example of which kind of metamorphosis?

• Partial

• Complete

Which subphylum of Arthropods does this organism belong to?

• Cheliceriformes

• Myriapods

• Hexapods

• Crustaceans

Which subphylum of Arthropods has organisms that live mostly in water?

• Cheliceriformes

• Myriapods

• Hexapods

• Crustaceans