Exam 23: Animals I: Major Invertebrate Groups

What structures do barnacles use to capture their food?

Elephantiasis is caused by damage of valves that affect the flow of ____.

The presence of earthworms ____.

Arthropod success cannot be attributed to which adaptation?

A major explosion of animal diversity in which all major marine lineages were formed took place during which period?

The smallest adult chelicerates are ____.

Match the description to the correct mollusk group. -glide about on a broad muscular foot

A closed circulatory system is present in ____.

Each tapeworm proglottid contains ____.

A flatworm moves nutrients and gases through its body using ____.

The mollusks with the largest brain and most complex behavior are the ____.

A gastrovascular cavity is present in ____.

A mantle is found only among the ____.

Match the description to the correct mollusk group. -have a mantle

Most animals show ____ symmetry.

Molting in arthropods involves primarily a change in ____.

Where are nematocysts located on a cnidarian's body?

In bilateral animals, ____ is contained within a cavity, cushions the gut during body movements, and is a means by which materials are distributed throughout the body.

A water-vascular system is unique to the ____.

The intestinal parasite Ascaris lumbricoides currently infects more than one billion people. Which group is it in?