SCI 210 Week 3 Quiz

SCI 210 Week 3 Quiz | Assignment Help | Carrington College

Question 1

 (SLO 5) An interbreeding, reproducing group of individuals of a single species is called a(n)

 

   unit.

   family.

   community.

   ecosystem.

   population.

 

 

Question 2

 (SLO 5) The number of individuals of a species in a give unit area (e.g., the number of rabbits per hectare) is called

   population density.

   carrying capacity.

   replacement level.

   critical number.

   population equilibrium.

 

Chapter 4: The population density refers to the number of individuals within a given region.

 

Question 3

 (SLO 5) A species that has an essential role in maintaining ecosystem structure is called a(n)

   keystone species.

   critical species.

   endangered species.

   predator.

   threatened species.

 

Chapter 4: The keystone species maintains ecosystem biotic structure.

 

Question 4

 (SLO 5) Which of the following best describes a country's biological wealth?

 

   The country's animal life

   The country's plant life

   The endangered species of plants and animals of that country

   The species recognized in the Red List as endangered

   The animal and plant life for a specific country

 

 

Question 5

 (SLO 5) The greatest loss of biodiversity is caused by

 

   pollution.

   habitat alteration.

   hunting.

   competition with introduced species.

   overgrazing by domestic animals.

 

 

 

 

Question 6

 (SLO 5) Which of the following describes the role of wild plants in the U.S. pharmaceutical industry?

 

 

 

 

   All modern pharmaceuticals are produced synthetically.

   Only non-prescription herbal remedies are still derived from plants.

   Plants are only used in the production of traditional herbal remedies.

   Wild plants are still a major source of prescription and nonprescription drugs.

 

 

Question 7

 (SLO 5) The idea that a species has value for its utility to humans is called

 

   intrinsic value.

   instrumental value.

   fragmented value.

   valueless.

   aesthetic.

 

 

 

Question 8

 (SLO 6) A population with stable size (at equilibrium) is one in which

 

   death rate is less than birth rate.

   death rate is the same as birth rate on average.

   death rate exceeds birth rate.

   birth rate equals recruitment.

   there are no deaths.

 

Question 9

 (SLO 6) Demography is

   the study of population.

   the science concerned with mapping.

   an economic approach to resource consumption.  

a branch of chemistry concerned with water quality.

   the study of economics.

 

 

Question 10

 (SLO 6) Crude birth and death rates enable one to compare

   the natural increase or decrease of different populations.

   relative rates of immigration and emigration.

   the proportions of fertile women of different populations.

   the causes of deaths of a population.

   age profiles of different populations.

 

Question 11

 (SLO 6) The crude death rate for a given country is a statistic of

 

   total number of deaths per year.

   number of deaths per 1,000 people per year.

   total numbers of deaths per year regardless of cause.

   accidental deaths per year.

   infant mortality.

 

 

Question 12

(SLO 5) What is an exotic species and an invasive species? Give examples of each and their impact on native species.

 

Question 13

 (SLO 5) Describe two effects of humans that are believed to be accelerating the species extinction.

 

Question 14

 (SLO 6) Would you be willing to reduce by half your standard of living if a family in a developing country reduced by half its family size? Explain your position.