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प्रश्न
Which statement is correct with respect to the food chain?
विकल्प
Every component of the food chain forms a trophic level.
Inter-relation between different food chains is known as a food web.
All the chains formed by nutritional relations are used to understand energy flow.
All of the above.
उत्तर
All of the above.
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संबंधित प्रश्न
State with reason any two possible consequences of elimination of decomposers from the Earth.
Explain how the pesticides enter a food chain and subsequently get into our body.
Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat
What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.
Construct a short foodchain, ending with man.
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 is ten per cent law? Explain with an example.
What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent
A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
(a) Write a food chain comprising all the four organisms mentioned above.
(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.
(c) Name the link which is a predator as well as a prey.
(d) Name (i) second trophic level, and (ii) third trophic level.
(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?
(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.
Each level in the food chain is called a ______ level.
