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Atmospheric input is negligible in

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Important Questions on Ecosystem

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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
In which of the following both pairs have correct combination?
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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Schematically represent phosphorous cycle.
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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Write Carbon cycle.
MEDIUM
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
In a recent forest fire at the silent valley, phosphorous from the dead organisms was released into the soil due to a specific organism. Name the organism.
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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles

Which one of the following element never goes to the atmosphere?

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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Name any one symbiotic nitrogen fixing bacteria. How does it help in nitrogen fixation?
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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Differentiate between the carbon cycle and phosphorus cycle that operate in nature by giving two points.
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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Biogeochemical cycle having a small gaseous component is found in ___.
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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
The oceanic carbon reservoir constitutes
MEDIUM
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Describe the model of the phosphorous cycle in the terrestrial ecosystem.
HARD
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Represent the phosphorus cycle with a word diagram. 
EASY
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Select the pairs of sedimentary biogeochemical cycles.
I. Hydrogen cycle and water cycle
II. Phosphorus Cycle and sulphur cycle
III. Calcium cycle and magnesium cycle
IV. Carbon cycle and nitrogen cycle
EASY
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles

Fill in the blank with the correct option from the bracket.

The major reservoir of carbon on Earth is _____. (soil, ocean, atmosphere)

HARD
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Give an account of the phosphorus cycle of an ecosystem.
EASY
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Which one of the following will accelerate phosphorus cycle?
HARD
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles

Assertion (A): A primary succession is more common than secondary succession.

Reason (R): Biogeochemical cycling is absent in secondary succession.

MEDIUM
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Which process is unidirectional in nitrogen cycle?
MEDIUM
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
Which of the following statements is incorrect regarding the phosphorus cycle?
EASY
Biology>Ecology and Environment>Ecosystem>Nutrient Cycles

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks.

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Biology>Ecology and Environment>Ecosystem>Nutrient Cycles
About 70% of the total global carbon is found in