Tag: human population

Questions Related to human population

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. Community

  4. Population

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Correct Option: D

The stationary phase of a population occurs when



population and how it changes human population ecology and environment zoology

  1. Natality > Mortality

  2. Natality = Mortality

  3. Mortality > Natality

  4. Natality $ = 0$

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Correct Option: B
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.

Individuals of any species at a place from

population and how it changes human population ecology and environment zoology

  1. biotic community

  2. ecosystem

  3. population

  4. biome

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Correct Option: C
Explanation:
A. Biotic community is a group of populations of different species in a given area.
B. The ecosystem is the community of organisms that interact with each other and their surroundings or environment.
C. A population is a group of individual organisms of same species living in a given area.
D. A biome is a complex of different type of communities which are maintained under more or less similar climatic conditions.
So, the correct answer is 'Population'.

Individual of one kind occupying a particular geographic area at a given time are called

population and how it changes human population ecology and environment zoology

  1. Community

  2. Population

  3. Species

  4. Biome

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Correct Option: B

Changes in nature of population are called as

population and how it changes human population ecology and environment zoology

  1. Demography

  2. Vital index

  3. Demecology

  4. Population dynamics

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Correct Option: D
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.

Population is

population and how it changes human population ecology and environment zoology

  1. All animals of an area

  2. All plants of an area

  3. All plants and animals of an area

  4. All individuals of a species

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Correct Option: D
Explanation:

The answer is population because, population is defined as a community that consists of all the individuals of a given species in a specific area. All animals and plants of an area defines all species of plants or animals and in that sense we can say that number of plants or animals in the given area is there. But for a population to form we take into account all the individuals of a given species only, it makes it specific and therefore cannot comprise of  all the animals or plants. So the correct answer is ' all Individuals of a species'. 

Which one of the following sequences was proposed by Darwin and Wallace for organic evolution?

population and how it changes human population ecology and environment zoology

  1. A) overproduction, variations,constancy of population size, natural selection

  2. B) variations, constancy of population size, over production, natural selection

  3. C) over production, constancy of population size, variations and natural selection

  4. D) variations, natural selection,over production, constancy of population size

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Correct Option: A
Explanation:

The sequence proposed by Darwin and Wallace for organic evolution is Overproduction, variations, constancy of population size, natural selection.First the species produces enormous number of offspring which contains variation. Then extra population is eliminated because not all the offspring can survive because of population stress. Lastly the natural selection operates for the survival of the fittest.

In sugar factories____ of total crushing in bagasse

population and how it changes human population ecology and environment zoology

  1. $40\%$

  2. $60\%$

  3. $30\%$

  4. $70\%$

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Correct Option: A
Explanation:

Bagasse is the residue of sugar cane  after the sugar cane containing the  juice is crushed and squeezed. Bagasse around 40%-50% of total sugar cane. 

So, the correct answer is 40%  

A group of individuals of a plant or animal species, inhabiting a given area is called

population and how it changes human population ecology and environment zoology

  1. Biome

  2. Population

  3. Ecosystem

  4. Community

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Correct Option: B

The transient population between two adjacent ecotypes is called as

population and how it changes human population ecology and environment zoology

  1. Deme

  2. Polytypic

  3. Cline

  4. Hybrid

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Correct Option: C
Explanation:

The diverse climate and the seasonal variations lead to the formation of several zones having flora and fauna with the phenotypic difference. An ecocline or simply cline describes an ecotone in which a series of biocommunities display a continuous gradient. The term was coined by the Huxley in 1938. Clines are the source of genetic and phenotypic variations. It consists of different forms of species, that exhibit gradual phenotypic and / or genetic differences over a geographical area, typically as a result of  diverse environmental condition.