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प्रश्न
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 |
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उत्तर
| Column I | Column II | Column III |
| (1) Secondary consumer | Carnivore | 3rd trophic level |
| (2) Primary consumer | Herbivore | 2nd trophic level |
| (3) Producer | Autotroph | 1st trophic level |
| (4) Tertiary consumer | Large carnivore | 4th trophic level |
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संबंधित प्रश्न
List two main components of ecosystem?
What is biological magnification?
Which category of organisms forms the starting point of a food chain?
Name one decomposer.
What is the role of decomposers in the ecosystem?
What is a trophic level?
What will happen if we kill all the organisms in one trophic level?
At which trophic level a person is feeding when he is eating roasted chicken.
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
The sea water contains water beetles, tadpole, fish and weeds.
Write a food chain comprising all the given organisms.
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.
The following statement is true or false :
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Fill in the following blank with suitable word :
Grass → ........... → Human
Explain how harmful chemicals enter our bodies.
Explain why, a food chain usually cannot have more than three or four steps.
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?
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
Which 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
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
