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प्रश्न
A food chain represents a unidirectional flow of X. What is X?
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उत्तर
A food chain represents a unidirectional flow of energy.
X is energy.
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संबंधित प्रश्न
What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?
State with reason any two possible consequences of elimination of decomposers from the Earth.
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Name one decomposer.
Draw the food chain with four trophic levels.
At which trophic level a person is feeding when he is eating eggs.
In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?
One of the following is a micro-consumer. This one is :
(a) ant
(b) lice
(c) fungi
(d) mosquito
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms are (i) predators, and (ii) prey?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
What would happen to the number of grass plants and foxes if the number of rabbits decreased?
Fill in the following blank with suitable word :
Pesticides enter the food chain at the ...........level
What is meant by bioconcentration of pesticides
What does garbage consist of?
Explain why, a food chain usually cannot have more than three or four steps.
Arrange the following in a correct sequence and form a food chain
Rabbit → Carrot → Eagle → Snake
We should reduce the use of the plastic bags, bottles etc. because ______.
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
