Tag: population and how it changes

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

Density of population (D) is 

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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


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

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

  1. Carrying capacity

  2. Biome

  3. Ecosystem

  4. Biological community

  5. Geographical community
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A biological community consists of all the populations of different species that live and interact in a specific area.

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

Individuals of a species which occur in a particular area constitute

  1. Flora

  2. Fauna

  3. Population

  4. Flora and fauna
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A population is defined as a group of individuals of the same species occupying a specific geographic area at a given time. Flora and fauna refer to all plant and animal life, respectively, in a region, which may include many different species.

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

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

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

The biological hierarchy proceeds from the individual organism to a population (group of same species), then to a community (multiple species), then to an ecosystem (biotic and abiotic factors), and finally to the biosphere (the global sum of all ecosystems).

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

All of the following are population's 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

Population characteristics (demographics) include metrics like size, density, sex ratio, age distribution, and birth/death rates. Phenotype is a characteristic of an individual organism, not a property of a population as a whole.

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

Choose the correct statement.

  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.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A species is a broad biological classification of organisms capable of interbreeding. A population is a specific group of individuals of that species found in a particular location, making it a local subset of the species.

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

Study of ecology of population is called as

  1. Autecology

  2. Synecology

  3. Ecosystem

  4. Demecology
Reveal answer Fill a bubble to check yourself
D Correct answer
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

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

Organisms belonging to the same species form a

  1. Population

  2. Community

  3. Ecosystem

  4. Trophic level

  5. Guild
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

Smallest unit to evolve through natural selection is

  1. Cell

  2. Clade

  3. Organism

  4. Population

  5. Species
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

An example of population is

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.