IGCSE Population Growth

Which of the following is the best definition for exponential growth?

• an increase in growth

• a decrease in growth

• a constant increase in growth rate

• no growth

Which of the following has/have been major contribution(s) to the human population increasing exponentially over the last 300 years.

• improved medical care

• improved agriculture

• increase in greenhouse gases

• depletion of the ozone layer

Which of the following factors decrease the size of a population?

• births

• emmigration

• deaths

• immigration

Tags

NGSS.MS-LS2-4

Which of the following is/are true of the United States (USA), compared to Nigeria?

• USA shows faster growth

• USA has a lower proportion of births

• USA has a higher proportion of elderly people

• USA has a higher proportion of people at working age

Which of the following is/are true of the exponential (log) phase of bacterial growth?

• The population doubles in number each time

• Cells are dying at the same rate as they are being produced

• It is caused by a shortage of food or build up of toxic waste products

• There are no limiting factors

Which of the following is/are true of the stationary phase of bacterial growth?

• The population doubles in number each time

• Cells are dying at the same rate as they are being produced

• It is caused by a shortage of food or build up of toxic waste products

• There are no limiting factors

Which of the following is/are true of the lag phase of bacterial growth?

• The population stays the same

• Bacteria are making enzymes and new DNA

• Doubling in number has little effect as the number is so small

• More cells are dying than are being produced

Which of the following is/are true of the death (decline) phase of bacterial growth?

• The number of cells dying is the same as the number of cells being produced

• It is caused by a food shortage or a build up of toxic waste products

• Bacteria are making new enzymes for growth

• More cells are dying than are being produced

Which of the following is the definition of a population?

• A group of organisms of one species, living in the same area, at the

  same time

• All of the organisms of different species in an ecosystem

• A unit containing all the organisms of different species and their

  environment, interacting together,

• All of the plants and animals in an area