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प्रश्न
Fill in the following blank with suitable word :
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............
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उत्तर
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a food chain.
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संबंधित प्रश्न
We do not clean natural ponds or lakes but an aquarium needs to be cleaned regularly. Why is it so ? Explain.
Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
Define decomposers.
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
At which trophic level a person is feeding when he is eating roasted chicken.
A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?
Write a common food chain of a pond ecosystem having four links.
Which of the following group of organisms are not constituents of a food chain?
- grass, lion, rabbit, wolf
- plankton, man, fish, grasshopper
- wolf, grass, snake, tiger
- frog, snake, eagle, grass, grasshopper
What would happen to the number of grass plants and foxes if the number of rabbits decreased?
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun :
Small algae → Zooplankton → Fish → Big fish
How much energy will be available to hawks in the food chain comprising hawk, snake, paddy and mice, if 10,000 J of energy is available to paddy from the sun?
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
Which of the following is an autotroph?
Each level in the food chain is called a ______ level.
In a food chain grasshopper gets energy by eating frog.
What are autotrophs?
Which organism in the food chain Grass → Insects → Thrush → Sparrow Hawk is classified as a tertiary consumer?
Why are shorter food chains considered more energy-efficient according to the principle of efficiency?
