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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? - Science

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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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अध्याय 5: Our Environment - Exercise 1 [पृष्ठ २२७]

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लखमीर सिंग Biology (Science) [English] Class 10
अध्याय 5 Our Environment
Exercise 1 | Q 26 | पृष्ठ २२७

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संबंधित प्रश्न

In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?    
Plants → Sheep → Man


What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?


The following statement is true or false :
 In biology, human beings are called producers.


Fill in the following blank with suitable word :

In nature, all green plants are............ whereas animals are consumers.


What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.


Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?


At which trophic level a person is feeding when he is eating bread.


Write a common food chain of a pond ecosystem having four links.


Which of the following are decomposers of dead organisms?

Bacteria Fungi Viruses
(a) no yes yes
(b) yes no yes
(c) yes yes  no
(d) yes yes yes

In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers


The decomposers in an ecosystem ______.


The sea water contains water beetles, tadpole, fish and weeds.

Write a food chain comprising all the given organisms.

 


Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.


In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?


A food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
(d) seed-eating bird


Bacteria and fungi are called decomposers.


Give one example of a food chain in an aquatic ecosystem?


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.    

In an ecosystem, herbivores represent ______.


Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement. 


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