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प्रश्न
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?
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उत्तर
No, the organisms of no trophic level can be removed without causing damage to the ecosystem, as removing them can disturb the food chain.
Yes, the impact of removing all the organisms in a trophic level will be different for different trophic levels. Suppose the producers, who belong to the first trophic level, are removed, no organism belonging to the higher trophic levels will be able to exist, as the food and energy for the higher trophic levels are provided by the producers.
If consumers such as deer are removed from their trophic level, consumers such as lions, which eat deer, will die because of the unavailability of food. Hence, the population of lions will be reduced.
If consumers such as lions are removed from their trophic level, then there will be no predator control over the population of deer. Thus, the deer population will increase, leading to an excessive grazing of grass.
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संबंधित प्रश्न
What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
What is a 'food web'? Show its formation.
The decomposers in an ecosystem ______.
One of the following is a micro-consumer. This one is :
(a) ant
(b) lice
(c) fungi
(d) mosquito
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?
Name two predators of snakes in a food web operating in a forest ecosystem.
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
Explain why, the flow of energy in the ecosystem is said to be unidirectional.
Explain why, a food chain usually cannot have more than three or four steps.
Name and state the law given by Lindeman which tells us how much energy entering a particular trophic level of organisms is available for trasnsfer to the next higher trophic level.
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
A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
(a) Write a food chain comprising all the four organisms mentioned above.
(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.
(c) Name the link which is a predator as well as a prey.
(d) Name (i) second trophic level, and (ii) third trophic level.
(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?
(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through 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. |
______ are organisms that are able to produce their own organic food.
Each level in the food chain is called a ______ level.
Animals that eat both plants and animals are called as Carnivores.
In a food chain grasshopper gets energy by eating frog.
Which statement is correct with respect to the food chain?
Which of the following statements is correct?
