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प्रश्न
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
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उत्तर
The amount of energy available to big fish will be 0.1 J. Given 10,000 J of energy is available to small algae from the sun. It can be calculated as follows:
| Small algae → | Zooplankton → | Fish → | Big fish |
| 10,000 J → | 1,000 J → | 100 J → | 10 J → |
The amount of energy available to big fish is 10 J.
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संबंधित प्रश्न
Give reason to justify the following: Flow of energy in a food chain is unidirectional.
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
Draw the food chain with four trophic levels.
Write down a food chain with five links in it.
Construct a short foodchain, ending with man.
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms in the food chain are herbivore, and carnivores?
The following is a food chain that ends with human :
How does this food chain differ form a usual food chain involving human such as : plants → goat → human?
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 |
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.
Explain why, a food chain usually cannot have more than three or four steps.
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Which other organism you could write in place of bird in the above food chain?
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
The sequence of who eats whom in an ecosystem is called as ______.
The food chain begins with the energy given by the ______.
In a food chain grasshopper gets energy by eating frog.
What is Autotrophs?
