Tag: human population

Questions Related to human population

Density of population (D) is 

zoology human population population ecology population size population and how it changes

  1. $D=\dfrac{S(size)}{W (weight)}$

  2. $D=\dfrac{S(space)}{N (Number)}$

  3. $D=\dfrac{N(number)}{S (space)}$

  4. None of the above

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Correct Option: C
Explanation:
The population density of a place is a number that defines the crowd in that place. It is calculated by dividing the population by the given area.
D = N/S = Number/Space


All the populations of organisms living together and potentially interacting in an area form a 

population and how it changes human population ecology and environment zoology

  1. Carrying capacity

  2. Biome

  3. Ecosystem

  4. Biological community

  5. Geographical community

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Correct Option: D

Individuals of a species which occur in a particular area constitute

population and how it changes human population ecology and environment zoology

  1. Flora

  2. Fauna

  3. Population

  4. Flora and fauna

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Correct Option: C

The correct sequence, from simplest to most complex is represented by

population and how it changes human population ecology and environment zoology

  1. Population - organism - community - ecosystem - biosphere

  2. Organism - population - community - ecosystem - biosphere

  3. Organism - population - community - biosphere - ecosystem

  4. Population - organism - community - biosphere - ecosystem

  5. Organism - community - population - ecosystem - biosphere

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Correct Option: B

All of the following are population's characteristics except

population and how it changes human population ecology and environment zoology

  1. Number of individuals

  2. Phenotype

  3. Sex ratio

  4. Age distribution

  5. Death rate

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Correct Option: B

Choose the correct statement.

population and how it changes human population ecology and environment zoology

  1. A species is one type of population.

  2. A species is a local subset of a population.

  3. A population is a local subset of a species.

  4. A population encompasses many different species.

  5. The terms population and species are interchangeable.

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Correct Option: C

Study of ecology of population is called as

population and how it changes human population ecology and environment zoology

  1. Autecology

  2. Synecology

  3. Ecosystem

  4. Demecology

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Correct Option: D
Explanation:
Autecology is the study of the interactions of an individual organism or a single species with the living and nonliving factors of its environment. 
Synecology is the branch of science that deals with the natural community and its environment.
An ecosystem is a community of living organisms where the biotic and abiotic components interact with each other.
Demecology is that branch of biology which deals with the ecology of populations
Therefore, the correct answer is option D

Organisms belonging to the same species form a

population and how it changes human population ecology and environment zoology

  1. Population

  2. Community

  3. Ecosystem

  4. Trophic level

  5. Guild

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Correct Option: A
Explanation:

Species is the basic unit in a biological classification and taxonomic ranking system. Generally, species is defined as a group of organisms in which two individuals are capable of reproducing their offspring, Organisms belonging to the same species in a particular locality is termed as population. 

Smallest unit to evolve through natural selection is

population and how it changes human population ecology and environment zoology

  1. Cell

  2. Clade

  3. Organism

  4. Population

  5. Species

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Correct Option: D
Explanation:

According to Darwin, evolution happens through natural selection which is a differential success in reproduction and adaptation of the organisms to their environment. The population is defined as a group of interbreeding organisms belonging to a particular species and sharing a common geographic area. Thus the smallest unit that can evolve through natural selection is the population. Thus, the correct answer is option D.

An example of population is

population and how it changes human population ecology and environment zoology

  1. All the honeybees in an orchard in one spring

  2. All the plants and animals in a forest

  3. The living and nonliving factors in a meadow

  4. The life in Earths atmosphere

  5. All the buffalo in 1840

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Correct Option: A
Explanation:

The term population refers to the number of animals or people in a particular place. The term also includes  group of similar organisms living in the same region or habitat such as organisms of the same species or number of honeybees in an orchard in one spring.