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प्रश्न
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.
विकल्प
food web
ecological pyramid
ecosystem
food chain
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उत्तर
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the food web.
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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?
We do not clean natural ponds or lakes but an aquarium needs to be cleaned regularly. Why is it so ? Explain.
The following statement is true or false :
Secondary consumers and tertiary consumers, both are carnivores.
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
What is the role of decomposers in the ecosystem?
At which trophic level a person is feeding when he is eating fish.
Write a common food chain of a pond ecosystem having four links.
Give one example of a simple food chain.
Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
If 5 joules of energy is available at producer level (plants), then how much energy will be transferred to the lion in the following food chain?
Plants → Goat → Lion
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
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 food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
(d) seed-eating bird
In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the wheat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body?
(a) snake
(b) eagle
(c) mice
(d) peacock
Primary consumers that eat plants are called _______.
Give one example of a food chain in an aquatic ecosystem?
In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?
The process of accumulation of harmful chemical substances like pesticides, in the body of living organisms at each trophic level of a food chain is known as ______.
Define – Heterotrophs.
