EASY
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Biological equilibrium is found among the

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Important Questions on Ecosystem

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Identify the possible link 'M' in the following food chain:
Plant Insect M Snake Eagle
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In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?
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Among biotic components, the micro consumers are called _____ (scavengers/decomposers).
MEDIUM
Describe the DDT biomagnification occurring in an aquatic food chain. State the negative effects the process has on the organisms at the last trophic level of the food chain.
EASY
In an ecosystem, the population of:
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Explain the role of the ‘first trophic level’ in an ecosystem.
HARD
What is humification?
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Write the differences between 

Food chain and food web

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Vertical distribution of different species occupying different levels in a biotic community is known as:
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In an ecosystem the rate of production of organic matter during photosynthesis is termed as:
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The mass of living material at a trophic level at a particular time is called:
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Match the trophic levels with their correct species examples in grassland ecosystem.

(a) Fourth trophic level (i) Crow
(b) Second trophic level (ii) Vulture
(c) First trophic level (iii) Rabbit
(d) Third trophic level (iv) Grass

Select the correct option.

MEDIUM
What do detritus food chains begin with?
MEDIUM
How is the detritus food chain connected with the grazing food chain in a natural ecosystem?
MEDIUM
Explain the process of the flow of energy in different trophic level of an ecosystem.
HARD
With the help of the diagram, explain the flow of energy in an ecosystem.
EASY
Explain the flow of energy in an ecosystem with the help of a diagram.
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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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Of the total incident solar radiation of percentage photosynthetically Active Radiation (PAR) captured by the plants
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If 20J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain?
plant mice snake peacock