Topic Test Answers

62 verified answers4 views
1
Free Preview

The events that lead to genetic drift are _______.

A
always natural disasters
B
random
C
predictable
D
related to human activities
3

Why was the reduction of the bison population to under 1,000 individuals a bottleneck event for the species?

A
It drastically reduced the gene pool of the species.
B
It reduced the territorial range available to the species.
C
Foreign genes were introduced by crossbreeding with cattle.
D
It reduced the prevalence of recessive traits.
4

Natural selection is an evolutionary mechanism by which _______.

A
advantageous traits are eliminated in a population
B
advantageous traits become more common in a population
C
inherited traits pass consistently through generations
D
organisms choose which traits to look for in their offspring
5

Which of the following limiting factors would be directly affected by a drought?

A
birth/death rate
B
immigration
C
available niche
D
resource supply
8

Which method to determine population size is the least invasive?

A
mark/recapture
B
direct observation
C
sampling
D
indirect observation
9

Which of the following statements about exponential growth curves is true?

A
Exponential growth curves are common for R-selected species.
B
Exponential growth curves show fast growth rates followed by slow growth rates.
C
No organisms in nature experience exponential growth rates.
D
Exponential growth curves are S-shaped.
10

The _______ is the total number of organisms that an ecosystem can support.

A
tolerance range
B
carrying capacity
C
competitive exclusion principle
D
population
11

A species that has experienced a severe bottleneck event would be expected to _______.

A
be better able to adapt to changing environmental pressures
B
have few instances of inbreeding
C
be more susceptible to disease and famine
D
retain significant genetic diversity
14

Tagging animals is indicative of which type of method to determine population size?

A
mark/recapture
B
direct observation
C
sampling
D
indirect observation
15

With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population?

A
a large elderly population
B
a large middle age population
C
a large teenage population
D
a large child population
16

The application of pesticides to control an invasive species is an example of _______.

A
mechanical control
B
chemical control
C
biological control
D
all of the above
19

The formula to calculate population density is _______.

Question illustration
A
land area number of populations
B
number of populations land area
C
number of organisms in a region land area
D
land area number of organisms in a region
20

The Toba supervolcanic event caused a bottleneck in the human population by _______.

A
raising global temperatures
B
humans choking on volcanic ash
C
inducing an ice age
D
volcanic lava burning human villages

Did you find these answers helpful?