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प्रश्न
What is a trophic level?
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उत्तर
Trophic levels are the feeding positions of organisms within a food chain, with producers at the base, followed by herbivores and successive levels of carnivores. Each level represents a stage in the transfer of energy and food. An organism can occupy multiple trophic levels depending on what it eats.
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संबंधित प्रश्न
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?
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
What would happen to the number of grass plants and foxes if the number of rabbits decreased?
(a) Match the terms given in column I with the terms given in column II and column III having the same meaning:
| Column I | Column II | Column III | |
| (i) | Secondary consumer | Herbivore | 1st trophic level |
| (ii) | Primary consume | Autotroph | 3rd trophic level |
| (iii) | Producer | Carnivore | 4th trophic level |
| (iv) | Tertiary consumer | Large carnivore | 2nd trophic level |
(b) 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.
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
In the food chain given below, if the amount of energy available at fourth trophic level is 5 kJ, what was the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
(a) 500 kJ
(b) 50 kJ
(c) 5000 kJ
(d) 5 kJ
What would happen if an organism is removed from the food chain?
Natural agents like ______ are the decomposition factors breaking complex forms into simpler units.
DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.
Primary consumers are characterized as:
