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Essentiale: Ecosystem
Iris: Ecosystem
Invictus: Ecosystem
Ecosystem - Mini Q Bank
Ecosystem- Essentiale - (New NCERT)
Ecosystem - Iris - (New NCERT)
Q. No.

Which of the following type of ecosystem is expected in an area where evaporation exceeds precipitation, and mean annual rainfall is below 100 mm?
1. Grassland
2. Shrubby forest
3. Desert
4. Mangrove

Subtopic:  Components & Types of Ecosystems |
 74%
From NCERT
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The zone at the edge of a lake or ocean which is alternatively exposed to air and immersed in water is called?

1.Pelagic zone2.Benthic zone
3.Lentic zone4.Littoral zone

Subtopic:  Components & Types of Ecosystems |
From NCERT
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Edaphic factor refers to :
1. Water
2. Soil
3. Relative humidity
4. Altitude

Subtopic:  Components & Types of Ecosystems |
 70%
From NCERT
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Which of the following is an ecosystem service provided by a natural ecosystem? 

1.  Cycling of nutrients
2.  Prevention of soil erosion
3.  Pollutant absorption and reduction of the threat of global warming
4.  All of the above

Subtopic:  Mineral Cycling & Ecosystem Services (OLD NCERT) |
 89%
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): Most ecosystems would vanish if the sun were not continuously providing energy to Earth.
Reason (R): Both energy and matter are transformed in ecosystems through photosynthesis and feeding relationships.
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 the (R) is the correct explanation of (A).
2. Both (A) and (R) are True but the (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R)are False.
Subtopic:  Energy Flow |
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Assertion: If decomposition stopped, life would cease.
Reason: Detritus would pile up and the ingredients needed to synthesize organic matter would be exhausted.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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:  Decomposition |
 73%
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Assertion: Grasslands do not accumulate as much biomass as forests.
Reason: Grasses and herbs have inefficient photosynthesis as compared to the tall trees.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason 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:  Ecosystem Productivity | Ecological Efficiencies |
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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):  Light is the main variable limiting primary production in the oceans.
Reason (R):  Solar radiation does not drive photosynthesis in oceans.
 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:  Components & Types of Ecosystems | Energy Flow |
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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):  Various adaptations have evolved in plants that can increase their uptake of nutrients.
Reason (R):  Plants are unable to ‘choose’ their environment as they are unable to move about.
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:  Components & Types of Ecosystems |
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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):  Most of an ecosystem’s production is eventually consumed by detritivores and decomposers.
Reason (R):  Energy is said to flow through, not cycle within, ecosystems.
 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:  Energy Flow |
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Select Question Set:
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Essentiale: Ecosystem
Iris: Ecosystem
Invictus: Ecosystem
Ecosystem - Mini Q Bank
Ecosystem- Essentiale - (New NCERT)
Ecosystem - Iris - (New NCERT)
Q. No.

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