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प्रश्न
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.
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उत्तर
Grass → Grasshopper → Frog → Bird
Producer Primary consumer Secondary consumer Tertiary consumer
Autotroph Herbivore Carnivore Large carnivore
1st trophic level 2nd trophic level 3rd trophic level 4th trophic level
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संबंधित प्रश्न
What will happen if we kill all the organisms in one trophic level?
Explain the terms 'producer' and 'consumer'. Give two examples of producers and two of consumers.
Define decomposers.
What will happen if we kill all the organisms in one trophic level?
Write down a food chain which ends with humans.
What is a 'food web'? Show its formation.
Which of the following statement is incorrect?
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 |
| (1) Secondary consumer | Herbivore | 1st trophic level |
| (2) Primary consume | Autotroph | 3rd trophic level |
| (3) Producer | Carnivore | 4th trophic level |
| (4) Tertiary consumer | Large carnivore | 2nd trophic level |
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
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
Most of the water surface of a lake is covered with algae. This algae is part of the food chain which also includes small fish, bird, larvae and big fish. Which of the following will obtain the maximum energy?
(a) big fish
(b) bird
(c) larvae
(d) small fish
The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.
What are autotrophs?
In a food chain, the third trophic level is always occupied by
In the following food chain, only 2J of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.
GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK
Which statement is correct with respect to the food chain?
If a harmful chemical enters a food chain comprising peacocks, plants, rats and snakes, which of these organisms is likely to have the highest concentration of the chemical in its body? Justify your answer. Name the process involved and define it.
Which of the following statements is correct?
