Unit Test — Cumulative exam Answers

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Consider the phylogenetic tree.Which pair of organisms is most closely related to primates?

Question illustration
A
amphibians and rodents
B
crocodiles and amphibians
C
rodents and rabbits
D
dinosaurs and birds
43

Why is water considered to be abiotic?

A
because it is not part of the biosphere
B
because it came from something living
C
because it is dead
D
because it is not living and never lived
44

Which is accurate about the six kingdoms?

A
One is eukaryotic, and five are prokaryotic.
B
Four are eukaryotes, and two are prokaryotes.
C
Four are prokaryotes, and two are eukaryotes.
D
Three are eukaryotes, and three are prokaryotes.
45

The overall population of a species decreased. What could have occurred to make this happen?

A
The immigration rate increased, while the death rate decreased.
B
The birth rate decreased, while the death rate increased.
C
The carrying capacity increased, while the immigration increased.
D
The emigration increased, while the birth rate increased.
48

A scientist measured an increase in nitrous oxide in the atmosphere. This increase would result in

A
an increase in the greenhouse effect.
B
a decrease in the greenhouse effect.
C
no change in the greenhouse effect.
D
a stabilization of the greenhouse effect.
50

What is likely to happen to a healthy population that is experiencing exponential growth?

A
It will eventually reach its carrying capacity.
B
It will experience a population crash.
C
It will go extinct in the near future.
D
It will continue to grow exponentially indefinitely.

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