Most animals are tree dwellers in a:

1. coniferous forest
2. thorn woodland
3. temperate deciduous forest
4. tropical rainforest

Subtopic:  Components & Types of Ecosystems |
 68%
NEET - 2015
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Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks. 

A B C D
1. Rock minerals Detritus Litter fall Producers
2. Litter Producers Rock minerals Detritus
3. Detritus Rock minerals Producers Litter fall
4 Producers Litter fall Rock minerals Detritus
Subtopic:  Mineral Cycling & Ecosystem Services (OLD NCERT) |
 85%
From NCERT
AIPMT - 2014
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If 20 J of energy is trapped at the producer level, then how much energy will be available to peacocks as food in the following chain? 
Plant → mice →snake→ peacock

1. 0.02 J 2. 0.002 J
3. 0.2 J 4. 0.0002 J
Subtopic:  Ecological Pyramids |
 76%
From NCERT
AIPMT - 2014
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Pheretima and its close relatives derive nourishment from:

1. Sugarcane roots

2. Decaying fallen leaves and soil organic matter

3. Soil insects

4. Small pieces of fresh fallen leaves of maize

Subtopic:  Decomposition |
 88%
From NCERT
AIPMT - 2012
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Which one of the following statements is correct for secondary succession?

1. It occurs on a deforested site
2. It follows primary succession
3. It is similar to primary succession except that it has a relatively slow pace
4. All of the above

Subtopic:  Ecological Succession (OLD NCERT) |
 65%
From NCERT
AIPMT - 2011
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Large woody vines are more commonly found in:

1.  mangroves

2.  tropical rainforests

3.  alpine forests

4.  temperate forests

Subtopic:  Components & Types of Ecosystems |
 70%
AIPMT - 2011
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Quercus species are the dominant component in:

1. temperate deciduous forests
2. alpine forests
3. scrub forests
4. tropical rain forests
Subtopic:  Components & Types of Ecosystems |
 51%
AIPMT - 2008
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Stability of ecosystem depends upon:

1. Primary

2. Interchange between producers and consumers

3. Number of producers

4. Number of consumers

Subtopic:  Energy Flow |
 77%
From NCERT
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Intermediate community between pioneer and climax communities is called:

1. seral community

2. biotic community

3. temporary community

4. ecosure

Subtopic:  Ecological Succession (OLD NCERT) |
 76%
From NCERT
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Ten per cent law of energy transfer in a food chain is given by:

1. Schimper

2. Elton

3. Haeckel

4. Lindemann

Subtopic:  Energy Flow |
 66%
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