HARD
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Identify the correct number of food chains in the given food web.

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Important Questions on Ecosystem

EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
Explain the flow of energy in an ecosystem with the help of a diagram.
MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
What do detritus food chains begin with?
EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem

Write the differences between 

Food chain and food web

MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem

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>Energy Flow in an Ecosystem
Identify the possible link 'M' in the following food chain:
Plant → Insect →M→ Snake → Eagle
EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
In a food chain, deers are
MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
Explain the process of the flow of energy in different trophic level of an ecosystem.
MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
Differentiate between producer and decomposer.
MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
How is the detritus food chain connected with the grazing food chain in a natural ecosystem?
EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
Explain the role of the ‘first trophic level’ in an ecosystem.
HARD
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
By which way the flow of energy and nutrients takes place in an ecosystem.
EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
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
EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
Name the type of food chain that is the major conduit for energy flow in an aquatic ecosystem.
HARD
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
With the help of the diagram, explain the flow of energy in an ecosystem.
EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem

Write down the names of trophic levels in the following food chain: 

Grass →Goat → Man

EASY
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
State and Explain ten percent law of energy.
MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
Draw the sequence of organisms of a food chain of a pond ecosystem.
MEDIUM
Biology>Ecology>Ecosystem>Energy Flow in an Ecosystem
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>Energy Flow in an Ecosystem

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>Energy Flow in an Ecosystem
What do you mean by food chain and food web?