Tag: ecology and environment

Questions Related to ecology and environment

The relationship between a population and a species is described by

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 group of organisms occupying a specific area

  4. A population encompasses many different species

  5. The terms population and species are interchangeable.

Show answer
Correct Option: C
Explanation:

Population is a group of individuals of same species that occupy a specific area. A species can have one or more than one population i.e. population is local subset of species and a species can have many populations inhabiting in different areas. Since many populations that can interbreed make a species, these terms are not interchangeable.  Thus, the correct answer is option C.

What is the demographic transition of a society?

population and how it changes human population ecology and environment zoology

  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

Show answer
Correct Option: A
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.

Which of these best describes a population? 

population and how it changes human population ecology and environment zoology

  1. All of the frogs, dragonflies and water nymphs living in a pond.

  2. All of the soil organisms in a garden including the type of soil and moisture content of the soil.

  3. All of the E. coli bacteria living in your intestines.

  4. All of the different types of birds living in a wetland.

  5. An individual Eastern Spotted Skunk Iivng in a prairie.

Show answer
Correct Option: C
Explanation:
Population is a group of individual organisms of the same species in a given area.
Among all options, its option C which describes a population because it is showing the group of individuals of one species only i.e. E. coli living in a given area (intestine in this case).
So, the correct answer is 'All of the E. colibaceria living in your intestines'.

First population count in India was started in

population and how it changes human population ecology and environment zoology

  1. 1852

  2. 1891

  3. 1901

  4. 1951

Show answer
Correct Option: B
Explanation:

First population count in India was done in 1872 but due to many irregularities in it, 1891 census is considered as country's first census.

Populations are said to be sympatric when ......

population and how it changes human population ecology and environment zoology

  1. Two populations live together and freely interbreed to produce sterile offspring

  2. Two populations are physically isolated by natural barriers

  3. Two populations are isolated but occasionally come together to interbreed

  4. Two populations share the same environment but cannot interbreed

Show answer
Correct Option: D

The sum total of the populations of the same kind of organisms constitute

population and how it changes human population ecology and environment zoology

  1. Colony

  2. Genus

  3. Community

  4. Species

Show answer
Correct Option: D
Explanation:

Species is a group of the same kind of the organisms.

Genus is a group of organisms which maybe of different species.
colony is usually an association of two or more different kind of organisms which live together usually in mutual relationships.
Community is a big group of organisms which may be of different kind but live together and use the same resources in the same area.
So the correct answer is' Species'.

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

population and how it changes human population ecology and environment zoology

  1. Population dynamics

  2. Population dispersal

  3. Population explosion

  4. Population density

Show answer
Correct Option: A
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.

Populations connected by dispersing individuals are called

population and how it changes human population ecology and environment zoology

  1. Demes

  2. Community

  3. Metapopulation

  4. Both B and C

Show answer
Correct Option: C
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'.

Individuals having similar life cycle experiencing similar ecological parameters at similar stage of life cycle are

population and how it changes human population ecology and environment zoology

  1. Guild

  2. Population

  3. Ecocline

  4. Biotype

Show answer
Correct Option: B
Explanation:

"Population" is defined as a group of individuals of the same species living and interbreeding within a same given area. Members of a population often rely on the same resources and are subject to similar environmental constraints.

"Guild" is any group of species that exploit either same resources or different resources in related ways. Also, it is not necessary that the species within a guild occupy the same, or even similar  ecological niches.
"Ecoline"  is a physical transition zone. It is a variation of the physicochemical environment of one or two physicochemical factors.
"Biotype" is a group of individuals that are genetically identical but form a physiologically distinct race within a species, having dissimilar parameters.
Hence, answer is "Population".

Population was termed as self perpetuating unit by :

population and how it changes human population ecology and environment zoology

  1. Malthus

  2. Spencer

  3. Mobius

  4. Odum

Show answer
Correct Option: A
Explanation:

Malthus termed population as "Self perpetuating unit" in his book, "An Essay on the Principle of Population," which was published in 1798.