Tag: levels of biodiversity

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Questions Related to levels of biodiversity

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Select the incorrect statement.

  1. Species diversity increases as we move away from the equator towards the poles.

  2. Stellar's sea cow and passenger pigeon got extinct due to over exploitation by man.

  3. Lantana and Eichhornia are invasive weed species in India.

  4. Among animals, insects are the most species-rich taxonomic group.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Species diversity decreases as we move away from the equator towards the poles due to:-

(i)Temperature decreases and conditions become harsh.
(ii)Both the amount and intensity of solar radiation decrease.
(iii)Vegetation decreases.
(iv)Fewer resources available to support species.

So the correct option is 'Species diversity increases as we move away from the equator towards the poles.'

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

India has a greater ecosystem diversity than a Scandinavian country like Norway. What kind of diversity does it represent?

  1. Species diversity

  2. Ecological diversity

  3. Genetic diversity

  4. None of these.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ecological diversity is the diversity at ecosystem level. India with its deserts, rainforests, mangroves, coral reefs, wetlands, estuaries and alpine meadows has a greater ecosystem diversity than a  Scandinavian country like Norway.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

India constitutes _______ percent of the world's land area and contributes _______ percent of the global species diversity.

  1. 1.0, 5.5

  2. 5.5, 1.0

  3. 8.1, 2.4

  4. 2.4, 8.1
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Although India has only 2.4 percent of the world's land area, its share of the global species diversity is an impressive 8.1 percent. 

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Species diversity ______ as we move away from the ______ towards_____.

  1. decreases, equator, poles

  2. increases, equator, poles

  3. decreases, poles, equator

  4. none of these.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The biodiversity shows a latitudinal and altitudinal gradient. The species diversity decrease as well as we move away from the equator towards the poles with very few exceptions, tropics harbour more species than temperature or polar areas.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Which of the following statements regarding the estimates of number of species found on earth is not correct?

  1. Total number of species present on earth are considered to be about 7 million as estimated by Robert May.

  2. Plants constitute more than 70% of all the species recorded, whereas animals constitute less than 22% of the total number of species.

  3. Insects constitute more than 70% of all the animal species.

  4. None of these.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Animals constitute more than 70% of all the species recorded whereas plants constitute around 22% of total number of species. 

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Species diversity ______ as one moves from high to low altitudes.

  1. increases

  2. decreases

  3. first increases then decreases

  4. first decreases then increases
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity changes with the change in altitude. It increases as one moves from higher to lower altitudes.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Study the given populations and choose the correct answer in relation to species diversity.

Population Species  Group Individuals
Population  A                I Mammals  3
     II Birds  2
     III Amphibians  2
Population  B      I Mammals  2
     II Mammals  2
    III Amphibians  1
Population  C      I Mammals  3
    II Mammals  2
   III Mammals  1

 

  1. Maximum diversity - Population B; Minimum diversity - Population C

  2. Maximum diversity - Population A; Minimum diversity - Population C

  3. Maximum diversity - Population A; Minimum diversity - Population B

  4. Maximum diversity - Population B; Minimum diversity - Population A
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Species diversity is the number of different species present in a given population i. e. 'Species diversity relates to the number of different species.'
In population A, there are 3 different classes present. These are mammals, birds, and amphibians. Hence, it will have vast species diversity.
In population B, only 2 classes are present, namely mammals and amphibians. Hence, species diversity will be less compared to that of population A.
In population C, all the species belongs only to class mammals. Hence, it will show the least species diversity.

So the correct answer is option B.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

On a logarithmic scale, the species area relationship is a straight line described by the equation log S = log C + Z log A.
What does S, C, Z and A represent in the given equation? Select the correct answer from the codes given below.
Species richness = 1
Slope of the line  = 2
Y- intercept          = 3 
Area                    = 4

  1. 1 - C; 2 - S; 3 - Z; 4 - A

  2. 1 - S; 2 - Z; 3 - C; 4 - A

  3. 1 - Z; 2 - S; 3 - C; 4 - A

  4. 1 - A; 2 - C; 3 - S; 4 - Z
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The relationshipbetween species richness and area is rectangular hyperbola for a wide variety of taxa whether they are birds, bats, freshwater fishes or flowering plants and the equation can be given as S = $CA^z$.