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The trees occupy the top vertical strata of a forest, shrubs the second and herbs and grasses occupy the bottom layers, this represents 

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Important Questions on Ecosystem

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The term ecosystem was coined by:
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The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as:
MEDIUM
Study the following statements and select the correct ones:
I) In a thermally stratified lake, in winter, the upper layer is known as epilimnion.
II) Animals in a lake that are capable of swimming constitute neuston.
III) The natural interconnections of food chain forms a network called food web.
IV) Energy flow in an ecosystem is unidirectional.
MEDIUM
Which one of the following is a characteristic feature of cropland ecosystem?
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Which of the following ecosystem has the maximum amount of biomass production?
MEDIUM
What is stratification? Give one example. 
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Biological equilibrium is found among the:
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Give a reason for the following.

The equilibrium of a forest ecosystem can be disturbed by the uncontrolled hunting of big predators.

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Who proposed that ecosystem is the symbol of structure and function of nature?
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Which among the following is not a functional unit of the ecosystem?
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Most animals that live in deep oceanic waters are:
MEDIUM
Vertical distribution of different species occupying different levels in a biotic community is known as:
HARD

Give one significant contribution of the following scientist.

R.Mishra

HARD
Which of the following shows thermal stratification?
MEDIUM

Explain Rivet Popper Hypothesis.

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Interrelationships between which components are an ecosystem?
MEDIUM
All species of vultures in India are threatened with extinction. What is the most likely outcome if all vultures in India go extinct?
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Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:
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An association of individuals of different species living in the same habitat and having functional interactions is: