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प्रश्न
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
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उत्तर
Organisms that break down the complex organic compounds present in dead animals and plants are called decomposers.
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संबंधित प्रश्न
List two main components of ecosystem?
Which category of organisms forms the starting point of a food chain?
At which trophic level a person is feeding when he is eating roasted chicken.
At which trophic level a person is feeding when he is eating apple.
Construct a short foodchain, ending with man.
Write a common food chain of a pond ecosystem having four links.
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
What is meant by bioconcentration of pesticides
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
Which of the following limits the number of trophic levels in a food chain?
(a) insufficient food supply from producer level
(b) decrease in energy at higher trophic levels
(c) increase in the number of organisms at higher trophic levels
(d) accumulation of harmful chemicals at higher trophic levels
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(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
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Write the food chain comprising all the organisms mentioned above.
Write the importance of the food chain.
Give some examples for Biodegradable and Non-biodegradable waste.
| S. No. | Biodegradable waste | Non-biodegradable waste |
| 1. | Food Waste | Plastic Bottles |
| 2. | ||
| 3. | ||
| 4. | ||
| 5. |
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
In an ecosystem, herbivores represent ______.
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Which group of organisms are not constituents of a food chain?
- Grass, lion, rabbit, wolf
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- Wolf, grass, snake, tiger
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