An easily disturbed ecosystem which can recover after some time after the stoppage of  damaging factor is of
1. Low stability and high resilience
2. High stability and high resilience
3. Low stability and low resilience
4. High stability and low resilience

Subtopic:  Ecological Succession (OLD NCERT) |
 62%
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Which of the following is not used for construction of ecological pyramids  
1. Fresh weight
2. Dry weight
3. Number of individuals
4. Rate of energy flow

Subtopic:  Ecological Pyramids |
 70%
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Highest annual net primary productivity is of  
1.Tropical deciduous forest
2. Temperate evergreen forest
3. Temperate deciduous forest
4. Tropical rain forest

Subtopic:  Components & Types of Ecosystems |
 78%

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Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem.
1. Frog
2. Phytoplankton
3. Fish
4. Zooplankton

Subtopic:  Energy Flow |
 52%

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Which one of the following is one of the characteristics of a biological community.  
1. Natality
2. Mortality
3. Sex-ratio
4. Stratification

Subtopic:  Components & Types of Ecosystems |
 71%

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Large Woody Vines are more commonly found in :   
1. Temperate forest
2. Mangroves
3. Tropical rainforests
4. Alpine forests

Subtopic:  Ecological Succession (OLD NCERT) |
 59%

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Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
1. Its base is broad
2. It shows energy content of different trophic level organisms
3. It is inverted in shape
4.It is upright in shape

Subtopic:  Ecological Pyramids |
 85%
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Which one of the following is not a gaseous biogeochemical cycle in ecosystem ?  
1. Sulphur cycle
2. Phosphorus cycle
3. Nitrogen cycle
4. Carbon cycle

Subtopic:  Mineral Cycling & Ecosystem Services (OLD NCERT) |
 71%
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Identify the possible link "A" in the following food chain :    
Plant → insect - frog → "A" → Eagle
1. Rabbit
2. WoIf
3. Cobra
4. Parrot

Subtopic:  Energy Flow |
 90%

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Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?                                                 

 
 

1.  Level PC is "insects" and level SC is "small insectivorous birds".
2.  Level PP is "phytoplanktons" in sea and "Whale" on top level TC
3.  Level PP is "pipal trees" and level SC is "sheep".
4.  Level PC is "rats" and level SC is "cats".

Subtopic:  Ecological Pyramids |
 53%

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