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Introduction & Types
Magnitude of Biodiversity
Biodiversity Patterns
Importance of Biodiversity
Loss of Biodiversity
In Situ Conservation of Biodiversity
Ex Situ Conservation of Biodiversity
Biodiversity Conservation
Biodiversity
Q. No.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Species diversity contributes to the well-being of an ecosystem.
Reason (R):  Rich biodiversity contributes to higher productivity of an ecosystem.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Subtopic:  Importance of Biodiversity |
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Non-native introduced species always have a negative impact on the ecosystem in which they have been introduced.
Reason (R):  Non-native species always become invasive in the introduced ecosystem.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Loss of Biodiversity |
From NCERT

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Conserving the biological diversity of the ecological hotspots is very important component of efforts to safeguard the world’s biological heritage.
Reason (R):  The hotspots of biodiversity cover a large percentage of the land area of earth.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are True and (R) is the correct explanation of (A).
2.  Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.  (A) is True but (R) is False.
4.  Both (A) and (R) are False.
Subtopic:  In Situ Conservation of Biodiversity |  Biodiversity Conservation |
 75%

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Ex-situ conservation, while helpful in humankind's efforts to sustain and protect our environment, is rarely enough to save a species from extinction.
Reason (R):  It is to be used as a last resort, or as a supplement to in-situ conservation.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.
  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Ex Situ Conservation of Biodiversity |

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  Biosphere reserves attempt to achieve three interconnected functions: conservation, development and logistic support.
Reason (R):  They are legally protected areas where no human activity is allowed.

In the light of the above statements, choose the most appropriate answer from the options given below :

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Ex Situ Conservation of Biodiversity |

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):  The current mass extinction is different from the previous episodes of mass extinctions.
Reason (R):  It is happening at a faster rate and is mainly anthropogenic in nature.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1.  Both (A) and (R) are true and (R) is the correct explanation of (A).
2.  Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.  (A) is true but (R) is false.
4.  Both (A) and (R) are false.
  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Loss of Biodiversity |
 88%
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Consider three sample areas with the following composition: 

Sample area I: has three species of birds, two are represented by one individual each and the third by four individuals
Sample area II: has three species of birds, each represented by two individuals
Sample area III: has a species of insects, a species of mammals and a species of birds, each with two individuals

Which area will be considered as the most diverse?
1. Sample area I
2. Sample area II
3. Sample area III
4. Sample area II and Sample area III are equally diverse

Subtopic:   Biodiversity Conservation |
 85%

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Regarding the gradients of biodiversity:

I:  As we move from poles to the equator, broadly speaking, biodiversity decreases.
II:  There is an increase in species diversity from lower to higher altitudes.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

Subtopic:  Biodiversity Patterns |
 76%
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Match each item in Column I with one in Column II and choose the correct answer from the codes given below :

Column I

Column II

A

Genetic diversity

a.

Western ghats have greater amphibian diversity than eastern ghats

B.

Species diversity

b.

India has more than 50000 genetically different strains of rice

C.

Ecological diversity

c.

India has more ecosystems than Norway

Codes :

A B C
1. a b c
2. b a c
3. c b a
4. b c a
Subtopic:  Introduction & Types |
 85%

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What is the number of mega-diversity countries in the world?

1. 5 2. 12
3. 17 4. 22
Subtopic:  Introduction & Types |
 86%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

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Select Chapter Topics:
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Introduction & Types
Magnitude of Biodiversity
Biodiversity Patterns
Importance of Biodiversity
Loss of Biodiversity
In Situ Conservation of Biodiversity
Ex Situ Conservation of Biodiversity
Biodiversity Conservation
Biodiversity
Q. No.

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