invertebrate animal quiz

the madreporite helps the sea stars

absorb water to regulate its vascular system

true

polyps, in contrast to the medusae, are adapted to a sessile life in the cnidarians

true

pork should be eaten fully cooked to avoid being infested with tapeworms or Trichinella

false

sponges capture food using nematocysts

true

sponges have only a cellular level of organization, not tissue level

tick

the arthropod responsible for transmitting Rocky Mountain Spotted Fever to humans is the

housefly - mite

which pair exhibits the closest relationship?

arthropods - octopus

which animal has been place in the wrong group?

fluke - platyhelminthes

which of the following is correct in matching the common name with a phylum name?

sponges are the only animal group

at the cellular level of organization

molting

because an arthropod has a rigid exoskeleton, they must undergo what process in order to increase in size?

flatworms

because tapeworms are parasites which live in the intestines of vertebrates, they have lost a gastrovascular cavity but still exhibit bilateral symmetry, a degree of cephalization, and are acoelomate. this puts tapeworms in the group call

sea stars reproduce

by sexual means and also by asexual fragmentation

cnidarians obtain food through

capturing prey with tentacles

false

earthworms are hermaphrodites, with each able to fertilize its own eggs

true

echinoderms don't have a respiratory, excretory, or circulatory system

true

planaria contain both male and female reproductive structures in each individual

earthworm

this animal is bilaterally symmetrical but does not have well developed. senses on its head. it is segmented. it is a scavenger that lives in the soil. what is this animal?