EASY
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Primary carnivores belong to –

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Important Questions on Ecosystem

EASY
Biology>Ecology>Ecosystem>Flow of Energy
Who is secondary consumer in a food chain?
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Biology>Ecology>Ecosystem>Flow of Energy
In a food chain, deers are
HARD
Biology>Ecology>Ecosystem>Flow of Energy
By which way the flow of energy and nutrients takes place in an ecosystem.
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Biology>Ecology>Ecosystem>Flow of Energy
A deer with energy reserves of 150kJ spends 54kJ in respiration, while 84kJ is excreted as faeces and urine. Based on this information, the efficiency of energy transfer from the deer eaten by a lion, will be
EASY
Biology>Ecology>Ecosystem>Flow of Energy

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
Biology>Ecology>Ecosystem>Flow of Energy
What is the percentage of energy that passes from one trophic level to the next trophic level?
MEDIUM
Biology>Ecology>Ecosystem>Flow of Energy

Select the correct option for the "P" and "Q" in the given chart of a biological magnification of pesticides.

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Biology>Ecology>Ecosystem>Flow of Energy
What is a trophic level in an ecosystem ? What is ‘standing crop’ with reference to it?
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Biology>Ecology>Ecosystem>Flow of Energy
Of the total incident solar radiation of percentage photosynthetically Active Radiation (PAR) captured by the plants
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Biology>Ecology>Ecosystem>Flow of Energy
In an ecosystem, the population of:
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Biology>Ecology>Ecosystem>Flow of Energy
The amount of Photosynthetically active radiation captured by plants is
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Biology>Ecology>Ecosystem>Flow of Energy
The mass of living material at a trophic level at a particular time is called:
MEDIUM
Biology>Ecology>Ecosystem>Flow of Energy
How is the detritus food chain connected with the grazing food chain in a natural ecosystem?
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Biology>Ecology>Ecosystem>Flow of Energy
What are herbivores in an ecosystem?
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Biology>Ecology>Ecosystem>Flow of Energy
Explain the role of the ‘first trophic level’ in an ecosystem.
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Biology>Ecology>Ecosystem>Flow of Energy
Define standing crop.
MEDIUM
Biology>Ecology>Ecosystem>Flow of Energy
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
Biology>Ecology>Ecosystem>Flow of Energy
Which ONE of the following options lists the primary energy source(s) for all forms of life on earth?
EASY
Biology>Ecology>Ecosystem>Flow of Energy
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
HARD
Biology>Ecology>Ecosystem>Flow of Energy
A food chain always starts with_____