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प्रश्न
What is a food chain?
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उत्तर
The sequence of living organisms in a community in which one organism consumes another organism to transfer food energy is called a food chain. An example of a simple food chain is that operating in a grassland.
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संबंधित प्रश्न
In a food chain of frog, grass, insect and snake, assign trophic level to frog.
Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?
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
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
Draw the food chain with four trophic levels.
Write down a food chain which ends with humans.
Construct a short foodchain, ending with man.
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms in the food chain are herbivore, and carnivores?
The following is a food chain that ends with human :
plants → bee → human
Explain how plants provide food for bees.
What would happen to the number of rabbits and grass plants if the number of foxes decreased?
Write the percentage of energy transferred from autotrophs to the next level in a food chain.
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
Fill in the following blank with suitable word :
Plants → Antelope → ............
Explain why, a food chain usually cannot have more than three or four steps.
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.
"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Give one example of a food chain in an aquatic ecosystem?
In an ecosystem, herbivores represent ______.
Which of the following is an autotroph?
Food chains are very important for the survival of most species.
If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?
Animals that eat both plants and animals are called as Carnivores.
In a food chain, the third trophic level is always occupied by
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Which statement is correct with respect to the food chain?
