Question 1

_______ is (are)associated with 85% of the cases of threatened and endangered species.

Accepted Answer

A) Pollution 
B) Habitat loss 
C) Overexploitation 
D) Disease 
E) Exotic species

Question 2

In spite of hundreds of millions of dollars spent on insecticides targeted at pest control for agricultural and medical purposes,man has been unable to drive any to extinction.On the other hand,the extinction of many species of birds,fishes,plants,and insects species have occurred as a result of

Accepted Answer

A) hunting. 
B) farming. 
C) disease. 
D) habitat destruction. 
E) scientific collecting.

Question 3

Which of the following fields of study provide useful information for making decisions about conservation?

Accepted Answer

A) agronomy 
B) veterinary science 
C) genetics 
D) physiology 
E) All of these fields provide useful information for making decisions about conservation.

Question 4

Which of the following are causes for extinction?

Accepted Answer

A) habitat loss 
B) exotic species 
C) pollution 
D) All of these are causes for extinction. 
E) None of these are causes for extinction.

Question 5

Rabbits were introduced to Australia by pioneer settlers in the mid 1800s for sporting hunters.They have since stressed native marsupial and plant populations.This is an example of the introduction of exotic species through accidental transport.

Accepted Answer

A) True 
 B)False

Question 6

What is the main reason for the changes that are occurring in the Earth's climate?

Accepted Answer

A) Large scale deforestation 
B) Disruption of the waste recycling by decomposers 
C) Over harvesting of wild species for consumptive value 
D) Drainage of wetlands producing a disruption of water purification 
E) An increase in soil erosion leading to siltation of rivers and estuaries

Question 7

What is the main reason that the field of conservation biology has developed?

Accepted Answer

A) The current rates of extinction on Earth due to human related factors. 
B) Humans looking for new methods of obtaining resources from the natural environment. 
C) The consolidation of multiple fields of science into one in an attempt to be more efficient. 
D) As a means of monitoring the stability of ecosystems.

Exam 47: Conservation of Biodiversity

_______ is (are) associated with 85% of the cases of threatened and endangered species.