Question 1

Species richness of terrestrial plants and animals increases with

Accepted Answer

A) latitude. 
B) the structural diversity of plant communities. 
C) elevation. 
D) flatter terrain.

Question 2

In terrestrial habitats,species richness is negatively correlated with primary productivity.

Accepted Answer

A) True 
 B)False

Question 3

Primary productivity in the oceans is lower in tropical latitudes than in temperate latitudes,primarily due to a permanent thermocline in tropical latitudes.

Accepted Answer

A) True 
 B)False

Question 4

An ecologist samples trees in 50 plots in a forest to determine the number of species in the forest.When a species accumulation curve is used to plot the cumulative number of tree species (y axis)against the number of samples taken (x axis),the optimal sample size needed to determine species richness is represented by the point at which the curve

Accepted Answer

A) is steepest. 
B) is highest,after which it dips downward. 
C) flattens. 
D) is lowest.

Question 5

A mass extinction of large mammals occurred during the ________ epoch.

Accepted Answer

The answer of A mass extinction of large mammals occurred...

Question 6

Over the past 100 million years,species richness has declined for gymnosperms and has increased for angiosperms.

Accepted Answer

A) True 
 B)False

Question 7

As latitude increases,the number of marine species ________.

Accepted Answer

The answer of As latitude increases,the number of marine species...

Question 8

Which of the following shows the correct chronological order (geologically oldest to most recent)of near or total extinctions for the organisms listed?

Accepted Answer

A) dinosaurs,psilopsids,marine invertebrates,large mammals 
B) psilopsids,marine invertebrates,dinosaurs,large mammals 
C) large mammals,marine invertebrates,dinosaurs,psilopsids 
D) marine invertebrates,dinosaurs,psilopsids,large mammals

Question 9

As latitude increases,marine productivity ________.

Accepted Answer

The answer of As latitude increases,marine productivity ________....

Question 10

Humans are responsible for more than 75 percent of all present-day extinctions since A.D.1600.

Accepted Answer

A) True 
 B)False

Question 11

Variation in species richness of terrestrial species in North America correlates most strongly with estimates of

Accepted Answer

A) actual or potential evapotranspiration. 
B) annual temperature. 
C) solar radiation. 
D) precipitation.

Question 12

Total species diversity,or species richness,across all communities within a geographic area is referred to as ________ diversity.

Accepted Answer

The answer of Total species diversity,or species richness,across all communities...

Question 13

On a geological time scale,changes in climate do not influence overall regional patterns of species diversity.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is the correct order of plant evolutionary appearance (geologically oldest to present date)?

Accepted Answer

A) angiosperms,gymnosperms,psilopsids,pteriodophytes 
B) gymnosperms,angiosperms,psilopsids,pteriodophytes 
C) psilopsids,pteriodophytes,gymnosperms,angiosperms 
D) pteriodophytes,gymnosperms,angiosperms,psilopsids

Question 15

In marine environments,

Accepted Answer

A) both species richness and productivity increase with latitude. 
B) species richness increases and productivity decreases with latitude. 
C) species richness decreases and productivity increases with latitude. 
D) both species richness and productivity decrease with latitude.

Question 16

A conservation biologist sampled an area for fern species richness,and she compares her data to that previously collected by other researchers.Her data differ from the other researchers' data by (1)the size of the area sampled and (2)the number of samples collected.What method should she choose to perform a valid statistical comparison?

Accepted Answer

A) Resample at the site and construct an accumulation curve. 
B) Resample the total pool of samples from the data and construct an accumulation curve. 
C) Resample at the site and construct a rarefaction curve. 
D) Resample the total pool of samples from the data and construct a rarefaction curve.

Exam 27: Large-Scale Patterns of Biological Diversity

Species richness of terrestrial plants and animals increases with

In terrestrial habitats,species richness is negatively correlated with primary productivity.

Primary productivity in the oceans is lower in tropical latitudes than in temperate latitudes,primarily due to a permanent thermocline in tropical latitudes.

A mass extinction of large mammals occurred during the ________ epoch.

Over the past 100 million years,species richness has declined for gymnosperms and has increased for angiosperms.

As latitude increases,the number of marine species ________.

Which of the following shows the correct chronological order (geologically oldest to most recent) of near or total extinctions for the organisms listed?

As latitude increases,marine productivity ________.

Humans are responsible for more than 75 percent of all present-day extinctions since A.D.1600.

Variation in species richness of terrestrial species in North America correlates most strongly with estimates of

Total species diversity,or species richness,across all communities within a geographic area is referred to as ________ diversity.

On a geological time scale,changes in climate do not influence overall regional patterns of species diversity.

Which of the following is the correct order of plant evolutionary appearance (geologically oldest to present date) ?

In marine environments,