Unit Test — Cumulative exam Answers

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21
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Which best explains why angiosperms are the most diverse and successful plant group today?

A
Reproduction is aided by flowers, protected seeds, and insect pollinators.
B
Water transport and photosynthesis are aided by vascular tissue.
C
Plant growth and increasing size are aided by a new way to distribute nutrients.
D
Reproduction is aided by exposed seeds and wind pollination.
22
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Why do a chicken embryo and a cow embryo look very similar even though the adults do not?

A
They are not related, but still have similar development.
B
They are distantly related, so their development is similar.
C
The embryos mutate in utero to form different structures.
D
The genetic makeup of the two species changes during development.
23

In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?

A
Trilobites existed before jellyfish and ammonites.
B
Jellyfish existed before trilobites and ammonites.
C
Ammonites existed before trilobites and jellyfish.
D
Jellyfish, trilobites, and ammonites lived together.
24

What is the main function of the central nervous system?

A
process information from stimuli and respond
B
process information from responses and sense stimuli
C
produce stimuli and cause reactions in the body
D
sensing reactions and causing stimuli in the body
25

A commercial on television advertises a new medicine that claims to boost immunity. You want to verify that the claim is scientifically based. Which source is least likely to provide you with accurate information about this new medicine?

A
a magazine about entertainment and lifestyle trends
B
the studies that the television ad cites
C
a brochure from the doctor’s office
D
the website of the governmental agency that tests health products

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Unit Test — Cumulative exam Answers — TX-Biology…