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1 of 20
What name is given to the food-trapping cells of sponges?
2 of 20
have cell walls made of chitin.
obtain food by absorption.
3 of 20
Features unique to mammals include
the presence of hair.
extended parental care of the young.
having no egg-laying members.
4 of 20
Which of the following levels of structure encompasses all the others?
5 of 20
Which of the following animals does not have a body cavity?
6 of 20
Sharks are a type of
7 of 20
The water vascular system of a sea star functions in
movement of the tube feet.
circulation of nutrients around the body.
pumping water for swimming movements.
8 of 20
Neurons are specialized cells characteristic of
9 of 20
A(n) ______ is an example of an invertebrate chordate.
10 of 20
Animals probably evolved from protists. How do animals differ from these protist ancestors?
Animals are eukaryotic.
Animals have more specialized cells.
Animals are heterotrophic.
Animals are able to reproduce.
11 of 20
the exchange of materials with the surrounding environment.
the idea that all vertebrates are built in a similar way.
the correlation of structure and function.
maintaining a relatively constant internal environment.
12 of 20
Unique features of vertebrates include the presence of a(n)
skull and backbone
13 of 20
A marine biologist dredged up a small animal from the ocean floor. It was uniformly segmented, with short, stiff appendages and soft, flexible skin. It had a complete digestive system and a closed circulatory system but no skeleton. Based on the description, this animal sounds most like a(n)
14 of 20
The feature present in reptiles and absent in amphibians that freed reptiles from the dependence on
water for reproduction is
parental care of eggs.
the lateral line system.
the amniotic egg.
15 of 20
A change in the body often triggers a response that counteracts the change. This kind of response is known as
cause and effect.
16 of 20
A _____ is a chordate, but not a vertebrate.
17 of 20
Pill bugs” or “sow bugs”, often found under rocks and logs in moist places, have the ability to roll up into a ball when disturbed. Sow bugs are really crustaceans, not insects. Therefore, sow bugs do not have
three pairs of legs.
18 of 20
Which of the following tissues produces voluntary body movements?
Simple cuboidal epithelium
19 of 20
Which of the following are listed in the correct hierarchal order?
20 of 20
Which of the following animals displays radial symmetry?
A sea anemone