By process of leaching during decomposition of detritus, water soluble :

1.  organic nutrients go down the soil horizon and get precipitated as available salts
2.  inorganic nutrients go down the soil horizon and get precipitated as unavailable salts
3.  organic nutrients go down the soil horizon and get precipitated as available salts
4.  inorganic nutrients go down the soil horizon and get precipitated as available salts

Subtopic:  Decomposition |
 72%
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The three steps of decomposition occur:
1. sequentially, with catabolism being the last step.
2. sequentially, with leaching being the last step.
3. simultaneously.
4. sequentially, but not in a particular order.

Subtopic:  Decomposition |
 68%
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Decomposition of detritus is rapid when:
1. It is rich in lignin and chitin
2. Ambient temperature is low
3. Environment favours anaerobiosis
4. It predominantly contains nitrogen and sugars

Subtopic:  Decomposition |
 82%
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What percentage of photosynthetic active radiation is captured by plants?

1.1 – 52.2 – 10
3.504.90

Subtopic:  Ecosystem Productivity |
 81%
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Primary carnivores are, most aptly, characterized as:

1.Secondary producers2.Primary consumers
3.Secondary consumers4.Tertiary consumers

Subtopic:  Energy Flow |
 76%
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In a terrestrial ecosystem, a much larger fraction of energy flows through the:

1.DFC2.GFC
3.Either of DFC or GFC4.Nither of DFC nor GFC

Subtopic:  Energy Flow |
 76%
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In an aquatic food chain, zooplankton occupy which trophic level?

1.  First 2.  Second
3.  Third 4.  Fourth
Subtopic:  Energy Flow |
 84%
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Each trophic level has a certain mass of living material at a particular time, best called as:

1.Biomass2.Standing state
3.Standing crop4.Gross productivity

Subtopic:  Energy Flow |
 81%
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Approximately, what percent of energy is transferred to each trophic level from the lower trophic level in an ecosystem?

1.12.10
3.504.90

Subtopic:  Energy Flow |
 94%
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The entire sequence of communities that successively change in a given area are called:
1. Taxa
2. Seres
3. Pioneers
4. Climax

Subtopic:  Ecological Succession (OLD NCERT) |
 86%
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