Biology ยท Geography

Population Dynamics

978 Questions

Explore key concepts in population dynamics through these practice questions. The focus is on demographic transition models, population pyramids, and life history theory. These topics are useful for general studies and biology exams.

Demographic transition theoryPopulation pyramidsMathematical growth modelsLife history theory

Population Dynamics Questions

Multiple choice general knowledge

What is life expectancy?

  1. when the person dies

  2. average age of death of a given population

  3. average lofe span

  4. all of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Life expectancy is the statistical average age at death for a given population, calculated from mortality rate data.

Multiple choice general knowledge

Total fertility rate of the world is

  1. 1.59 children born/woman.

  2. 2.59 children born/woman.

  3. 3.59 children born/woman.

  4. 4.59 children born/woman.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The global total fertility rate (average children per woman) was approximately 2.59 around 2010-2012. This has since declined to about 2.3 in recent years (2020s), but 2.59 represents accurate demographic data from that earlier period.

Multiple choice softskills leadership

demographic

  1. related to population balance

  2. denoting a widely used temperature scale (basically same as Celsius)

  3. the ancient Roman festival in honor of Bacchus

  4. loss of speech due to injury or illness
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Demographic relates to the study of human populations, particularly their statistics, structure, and distribution. Option A correctly identifies that this term pertains to population characteristics, balance, and statistical analysis of groups.

Multiple choice

Physical growth and development is called

  1. readiness

  2. maturation

  3. mobility

  4. heredity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Maturation refers to the biological, genetically programmed physical growth and development that occurs naturally over time. Readiness refers to preparedness to learn, mobility is movement ability, and heredity is genetic transmission - but maturation specifically describes physical development unfolding.

Multiple choice

Different types of population fluctuation are

A. flat type B. cyclic type C. gradual type D. seasonal type E. annual type

  1. A, B and C

  2. B, C and D

  3. A, B, D and E

  4. A, C, D and E
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fluctuations in natural population are affected by: birth and death rates, resources like food, water and space, natural calamities such as earthquake and volcanic eruptions, abiotic factors like temperature and rainfall, other organisms sharing habitat.

Multiple choice

Population explosion occurs in _____ stage of the theory of demographic transition.

  1. first

  2. second

  3. third

  4. fourth

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Population explosion occurs in the second stage of demographic transition when death rates decline sharply due to better healthcare, sanitation, and nutrition, while birth rates remain high. This creates a rapid population surge. First stage has high birth and death rates (stable population), third stage shows declining birth rates, and fourth stage achieves low birth and death rates (replacement level).

Multiple choice

Directions: Read the following information carefully and answer the question given below. Within the last 25 years, a large portion of the population of the India has moved from the North to the South. This shift has occurred, not because employment opportunities in the South have expanded, but because, over the same period, the life expectancy of the India's population has increased, and more people therefore move to a warmer climate when they retire.

Which of the following, if true, would strengthen the claim made above that the population now has a greater life expectancy?

  1. Many employment opportunities in the South result from newly built retirement communities.

  2. People less than 70 year old made up less than 10 percent of retirees in 1980 but today account for over 40 percent of retirees.

  3. The segment of the population over 60 years old has increased by two-thirds in the last 20 years, while the entire population has increased by only one-half.

  4. The average cost of living in the South is significantly lower than it is in the North.

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The question concerns the claim that the population now has a greater life expectancy. This answer choice states that the segment of the population over 60 years old is growing at a faster rate than the population as a whole; so more people must be living longer.

Multiple choice

Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

According to government statistics released last year, despite a ramp up in its efforts to curb population growth, the number of new births reported has increased by 3.8%.

  1. despite a ramp up in its efforts to curb population growth, the number of new births reported has increased by 3.8%

  2. despite a ramp up in the government's efforts to curb population growth, the number of new births reported has increased by 3.8%

  3. despite a ramp up in its efforts to curb population growth, the number of new births reported increased by 3.8%

  4. despite a ramp up in the government's efforts to curb population growth, the number of new births reported increased by 3.8%

  5. the number of new births reported went up by 3.8% despite the government ramping up its efforts to curb population growth
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct. The option removes the error of Verb tense by using Simple Past - increased - to refer to growth in birth rate. Also, the option removes the Error of Missing Antecedent by substituting 'its' with 'government's'.

Multiple choice

Scientists predict that a jump in the national population growth rate of just two percent could require China to more than double its average agricultural production annually in ten years time.

  1. a jump in the national population growth rate of just two percent could require China to more than double its average agricultural production annually

  2. a jump of just two percent in its national population growth rate could require China to more than double its average annual agricultural production

  3. a jump in the national population growth rate by just two percent could require China to more than double its average annual agricultural production

  4. China would be required to more than double its average agricultural production annually to meet a jump of just two percent in its national population growth rate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct. The option removes the error of misplaced modifier by putting 'a jump of just two percent' next to 'China's population growth rate'. By specifying that it is China's (its) population growth rate that is being talked about, the ambiguity regarding whose growth rate is being talked about is also eliminated. The placement of 'annual' makes clear that China would need to more than double its average agricultural production in ten years time.

Multiple choice

Which among the following does not characterise population?

  1. It is a unit of biotic community.

  2. Similar populations of a species amusing different geographical areas are called daughter populations.

  3. Population is a dynamic unit.

  4. In a specific geographical area, the population is divided into demes.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Similar populations of a species amusing different geographical areas are called sister populations.