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प्रश्न
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
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उत्तर
1,000 J
According to the 10 per cent law, only 10 per cent of the energy available in one trophic level is transferred to the next trophic level.
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संबंधित प्रश्न
Which of the following are always at the second tropic level of food chains?
The first trophic level in a food chain is always a green plant. Why ?
List two important roles play in the environment by decomposers.
Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
What are planktons?
Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
At which trophic level a person is feeding when he is eating fish.
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.
(a) write a food chain which provides food to lion in this case.
(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
(c) Which other animal in the forest could have been in place of lion?
(d) How does the above food chain differ form the food chain such as : plants → goat → man?
What would happen to the number of grass plants and foxes if the number of rabbits decreased?
If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body?
Fill in the following blank with suitable word :
Grass → ........... → Human
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
What is meant by bioconcentration of pesticides
Which of the following gets the minimum energy through the food chain in an ecosystem?
(a) carnivore
(b) large carnivore
(c) producer
(d) herbivore
What is Autotrophs?
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
