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प्रश्न
Which of the following gets the minimum energy through the food chain in an ecosystem?
(a) carnivore
(b) large carnivore
(c) producer
(d) herbivore
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उत्तर
large carnivore
As large carnivores are at the upper trophic levels, they get the minimum energy through the food chain, according to the 10 per cent law.
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संबंधित प्रश्न
List two biotic components of a biosphere.
Explain how the pesticides enter a food chain and subsequently get into our body.
The following statement is true or false :
In biology, human beings are called producers.
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
Write down a food chain in the sea.
Write down a food chain which ends with humans.
What is a food chain?
Give one example of a simple food chain.
The following is a food chain that ends with human :
plants → bee → human
How do bees provide food for humans?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
| Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh. |
- Write a food chain which provides food to the lion in this case.
- Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
- Which other animal in the forest could have been in place of lion?
- How does the above food chain differ from the food chain such as: plants → goat → man?
  |
What would happen to the number of rabbits and grass plants if the number of foxes decreased?
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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
| 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. |
- In which organisms the pesticides enter from the polluted water? What is this level of organisms known as?
- Which organism will have the maximum amount of pesticides accumulated through the food chain? What is this process known as?
- Write the food chain comprising all the organisms mentioned above.
- Which other organism you could write in place of bird in the above food chain?
Which of the following is an autotroph?
In a food chain grasshopper gets energy by eating frog.
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In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
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