Biology · Geography

Population Dynamics

940 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 population and how it changes human population ecology and environment zoology

The stationary phase of a population occurs when



  1. Natality > Mortality

  2. Natality = Mortality

  3. Mortality > Natality
  4. Natality $ = 0$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Stationary phase (zero growth or plateau rate) of population occurs when birth and death rates are equal, the population stabilizes around the carrying capacity of the environment.

Multiple choice population and how it changes human population ecology and environment zoology

Changes in nature of population are called as

  1. Demography

  2. Vital index

  3. Demecology

  4. Population dynamics
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Population Dynamics is a branch of science. It deals with and studies the age, and size of a population. It also studies the other components of a population. As a result, it studies the over all nature of the population.

So, option D is the correct answer.

Multiple choice population and how it changes human population ecology and environment zoology

Populations have all of the following characteristics except

  1. Number of individuals

  2. Phenotype

  3. Sex ratio

  4. Age distribution

  5. Death rate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A population is a group of individual of a species inhabiting a particular geographic area. Number of individuals (population size), sex ratio (ratio of total individuals of two genders), age distribution (number of individuals in different age groups namely, childhood, adults and old age) and death rate (ratio of number of dying individuals to total population size) are some of the characters of population. The phenotype is visual/physical expression of the genotype of an individual; hence, it is characters of individually determined by its genotype. Thus, the correct answer is option B.

Multiple choice population and how it changes human population ecology and environment zoology

Which of the following is not the characteristic of population?

  1. Size

  2. Density

  3. Age distribution

  4. Phenotype

  5. Death rate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The phenotype is not the characteristic of the population. It is the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment

Total size is the number of individuals in a population.
Population density is defined as the number of individuals per unit area or per unit volume of the environment.
Distribution is the spatial pattern of individuals in a population relative to one another.
Death rate means mortality which means the rate of death of individuals in a population. 
Therefore, the correct answer is option D.

Multiple choice population and how it changes human population ecology and environment zoology

Population growth is not affected by which one of the following density-dependent factor?

  1. Limited nutrients

  2. Climate and temperature

  3. Build-up of toxins

  4. Predation

  5. Limited water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Climate temperature is not related to density-dependent factors affecting population growth because density-dependent factor is a limiting factor that depends on population size.
Density-dependent limiting factors include:
•   competition
•   predation
•   parasitism
•   disease, nutrients and water availability
Thus, the correct answer is option B. 
Multiple choice population and how it changes human population ecology and environment zoology

What is the demographic transition of a society?

  1. Low birth rates and low death rates

  2. Low birth rates and high death rates

  3. High birth rates and low death rates

  4. High birth rates and high death rates

  5. High birth rates and high emigration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Demographic transition of a society is the changing pattern of the population from high birth and death rates to the low birth and death rates over the time period. It indicates the economic changes in the particular region as the country develops from a pre-industrial to an industrialized one. Thus, the correct answer is option A.

Multiple choice population and how it changes human population ecology and environment zoology

The aggregate of process that determine the size and composition of any population is known as

  1. Population dynamics

  2. Population dispersal

  3. Population explosion

  4. Population density
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Population dynamics is a study of population. it includes size and age of a population, and also its composition. It considers these as dynamic systems. It also studies the biological environment affecting these dynamics.

So, option A is the correct answer.

Multiple choice population and how it changes human population ecology and environment zoology

Populations connected by dispersing individuals are called

  1. Demes

  2. Community

  3. Metapopulation

  4. Both B and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Metapopulation is a group of populations that are separated by space but consist of the same species. It is a population in which individuals are spatially distributed in a habitat to two or subpopulations.
So the correct answer is 'Metapopulation'.
Multiple choice population and how it changes human population ecology and environment zoology

The Allee effect is described by

  1. Population growth increases as population density increases, below a certain density.

  2. Population growth increases as population density increases, above a certain density.

  3. Population growth decreases as population density increases, above a certain density.

  4. Population growth increases as population density increases, causing density to then decrease.

  5. Population growth decreases as population density increases, causing density to then decrease.
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice population and how it changes human population ecology and environment zoology

Refer to the table below containing data obtained for a rabbit population over a period of several years.

Year Number of rabbits
1 4
2 17
3 62
4 245


Ultimately, the amount of nutrients and other resources would become limiting. What would happen to the rabbit population at that time?

  1. It would reach the carrying capacity of the environment.

  2. It would continue to grow indefinitely.

  3. It would engage in intraspecific competition.

  4. Both A and B.

  5. Both A and C.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

If the nutrients and other resources are limited they will limit the population size and it will reach the "carrying capacity" of the environment and rabbits will compete with one another (intraspecific competition) for these limited nutrients. Therefore, the correct answer is option E.

Multiple choice population and how it changes human population ecology and environment zoology

A population is made up of

  1. All individuals of any kind

  2. All groups of organisms in an area at any one time

  3. Groups of individuals of different kinds in an area

  4. Individuals of the same kind in an area at a given time
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A population is all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding. They are capable of interbreeding or reproduction.

So the correct option is 'individuals of the same kind in an area at a given time'.

Multiple choice economics partition values introduction to statistics introduction to statistical method and econometrics frequency distribution tables and graphs

If the population figures are given for each State of India, then the data can be classified as

  1. Qualitative

  2. Quantitatives

  3. Chronological

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

There are four important bases of classification:

(1) Qualitative Base (2) Quantitative Base (3) Geographical Base (4) Chronological or Temporal Base

(1) Qualitative Base:

When the data are classified according to some quality or attributes such as sex, religion, literacy, intelligence etc…

(2) Quantitative Base:

When the data are classified by quantitative characteristics like heights, weights, ages, income etc…

(3) Geographical Base:

When the data are classified by geographical regions or location, like states, provinces, cities, countries etc…

(4) Chronological or Temporal Base:

When the data are classified or arranged by their time of occurrence, such as years, months, weeks, days etc…


If the population figures are given for each State of India, then the data can be classified as quantitative data.

Multiple choice geography economic activity people and resources utilisation of europe europe - peninsula of asia continents: europe

Factors which affects population distribution over an area are _______________________________.

  1. Climatic conditions, political systems and means of livelihood.

  2. Climatic conditions, terrain, political systems and means of livelihood.

  3. Climatic conditions, terrain and means of livelihood.

  4. Climatic conditions, terrain, political systems.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Physical factors that affect population distribution include altitude and latitude, relief, climate, soils, vegetation, water and location of mineral and energy resources. It is important to note that most of the physical factors influence population distribution only indirectly through climatic conditions.