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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
"Energy flow in a food chain is unidirectional" Justify this statement.
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Write an aquatic food chain.
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
At which trophic level a person is feeding when he is eating roasted chicken.
At which trophic level a person is feeding when he is eating eggs.
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
What could be X?
What would happen to the number of rabbits and grass plants if the number of foxes decreased?
What would happen to the number of grass plants and foxes if the number of rabbits increased?
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 |
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
An aquatic food chain comprises of the organisms like tadpoles, weeds, fish and water beetles. The organism which gets the minimum energy through this food chain is :
(a) water beetles
(b) tadpoles
(c) weeds
(d) 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.
Write the food chain comprising all the organisms mentioned above.
"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Bacteria and fungi are called decomposers.
The food chain begins with the energy given by the ______.
Which statement is correct with respect to the food chain?
