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प्रश्न
What is a trophic level?
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उत्तर
Trophic levels are the feeding positions of organisms within a food chain, with producers at the base, followed by herbivores and successive levels of carnivores. Each level represents a stage in the transfer of energy and food. An organism can occupy multiple trophic levels depending on what it eats.
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संबंधित प्रश्न
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?
Explain how the pesticides enter a food chain and subsequently get into our body.
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 :
Secondary consumers and tertiary consumers, both are carnivores.
Which category of organisms forms the starting point of a food chain?
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?
Write down a food chain in the sea.
Write down a food chain with five links in it.
At which trophic level a person is feeding when he is eating eggs.
Construct a long food chain.
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
What is a food chain?
Which of the following represents a possible food chain found in a pond :
| Primary producers |
Primary consumers | Secondary consumers |
| (a) green algae | fish | mosquito larvae |
| (b) fish | green algae | mosquito larvae |
| (c) mosquito larvae | fish | green algae |
| (d) green algae | mosquito larvae | fish |
If a grasshopper is eaten by a frog, then the energy transfer will be from ______.
Which of the following statement is incorrect?
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
The following is a food chain that ends with human :
plants → bee → human
Explain how plants provide food for bees.
What would happen to the number of rabbits and grass plants if the number of foxes increased?
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
Explain how harmful chemicals enter our bodies.
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
What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight
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
Bacteria and fungi are called decomposers.
The process of accumulation of harmful chemical substances like pesticides, in the body of living organisms at each trophic level of a food chain is known as ______.
Which of the following is a logical sequence of food chain?
Each level in the food chain is called a ______ level.
In a food chain, the third trophic level is always occupied by
