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प्रश्न
Write down a food chain in the sea.
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उत्तर
Algae →Protozoa →Small fish → Large fish
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संबंधित प्रश्न
State with reason any two possible consequences of elimination of decomposers from the Earth.
Give reason to justify the following: The existence of decomposers is essential in a biosphere.
Why are green plants called producers?
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
Which category of organisms forms the starting point of a food chain?
Name the organisms belonging to the second and the fourth trophic levels in the food chain comprising the following :
Frogs, Plants, Snakes, Hawk, Insects
What are the various steps of food chain called?
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
At which trophic level a person is feeding when he is eating fish.
Write a common food chain of a pond ecosystem having four links.
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.
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 the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
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
Explain why, the flow of energy in the ecosystem is said to be unidirectional.
Primary consumers that eat plants are called _______.
Which of the following is a logical sequence of food chain?
DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.
