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प्रश्न
What is the role of decomposers in the ecosystem?
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उत्तर
Decomposers decompose dead plants and animals and hence act as cleansing agents of the environment.
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संबंधित प्रश्न
Give reason to justify the following: The existence of decomposers is essential in a biosphere.
What will happen if we kill all the organisms in one trophic level?
In the following food chain, 100 J of energy is available to the lion. How much energy was available to the producer?
Plants → Deer → Lion
In the following food chain, plants provide 500 J of energy to rats. How much energy will be available to hawks from snakes?
Plants → Rats → Snakes → Hawks
Explain how the pesticides enter a food chain and subsequently get into our body.
What are planktons?
Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
At which trophic level a person is feeding when he is eating apple.
If a grasshopper is eaten by a frog, then the energy transfer will be from ______.
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
The following is a food chain that ends with human :
plants → bee → human
How do bees provide food for humans?
The following is a food chain that ends with human :
Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.
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 |
What is ten per cent law? Explain with an example.
Explain how harmful chemicals enter our bodies.
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
Bacteria and fungi are called decomposers.
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
What is Autotrophs?
