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प्रश्न
Which of the following constitute a food-chain?
विकल्प
Grass, wheat and mango
Grass, goat and human
Goat, cow and elephant
Grass, fish and goat
उत्तर
Grass, goat and human
Explanation:
Grass is eaten by goats, and goats are eaten by humans. Grass, goat and human serve as various trophic levels of a food chain as shown below:
\[\ce{\underset{(Producer)}{Grass} -> \underset{(Herbivore)}{Goat} -> \underset{(Omnivore)}{Human}}\]
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संबंधित प्रश्न
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?
Plants → Sheep → Man
Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat
Write an aquatic food chain.
What is the role of decomposers in the ecosystem?
Draw the food chain with four trophic levels.
At which trophic level a person is feeding when he is eating bread.
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
What is a 'food web'? Show its formation.
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Will the levels of biological magnification be different at different levels of the ecosystem?
Which of the following gets the minimum energy through the food chain in an ecosystem?
(a) carnivore
(b) large carnivore
(c) producer
(d) herbivore
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Bacteria and fungi are called decomposers.
______ are organisms that are able to produce their own organic food.
______ obtained energy from the chemical breakdown of dead organisms.
In a food chain grasshopper gets energy by eating frog.
Define – Heterotrophs.
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
