MEDIUM
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The amount of total biomass or organic matter present in an ecosystem is called

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Important Questions on Ecosystem

MEDIUM
Biology>Ecology>Ecosystem>Flow of Energy
What do detritus food chains begin with?
EASY
Biology>Ecology>Ecosystem>Flow of Energy
What is a trophic level in an ecosystem ? What is ‘standing crop’ with reference to it?
EASY
Biology>Ecology>Ecosystem>Flow of Energy
Define standing crop.
EASY
Biology>Ecology>Ecosystem>Flow of Energy
Explain the flow of energy in an ecosystem with the help of a diagram.
EASY
Biology>Ecology>Ecosystem>Flow of Energy
In an ecosystem, the population of:
EASY
Biology>Ecology>Ecosystem>Flow of Energy

Write the differences between 

Food chain and food web

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
In a food chain, deers are
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?
MEDIUM
Biology>Ecology>Ecosystem>Flow of Energy
How is the detritus food chain connected with the grazing food chain in a natural ecosystem?
EASY
Biology>Ecology>Ecosystem>Flow of Energy
The mass of living material at a trophic level at a particular time is called:
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.

EASY
Biology>Ecology>Ecosystem>Flow of Energy
State what ‘standing crop’ of a trophic level represents.
MEDIUM
Biology>Ecology>Ecosystem>Flow of Energy
Explain the process of the flow of energy in different trophic level of an ecosystem.
HARD
Biology>Ecology>Ecosystem>Flow of Energy
With the help of the diagram, explain the flow of energy in an ecosystem.
HARD
Biology>Ecology>Ecosystem>Flow of Energy
By which way the flow of energy and nutrients takes place in an ecosystem.
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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EASY
Biology>Ecology>Ecosystem>Flow of Energy
Explain the role of the ‘first trophic level’ in an ecosystem.
EASY
Biology>Ecology>Ecosystem>Flow of Energy
Of the total incident solar radiation of percentage photosynthetically Active Radiation (PAR) captured by the plants
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