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प्रश्न
Write an aquatic food chain.
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उत्तर
An aquatic food chain is one that operates in a water body such as a pond, a lake, or an ocean.
Phytoplankton → Zooplankton → Small Fish → Larger Fish → Sharks
In this aquatic food chain, energy flows from the producers (phytoplankton) up through various consumer levels to the apex predators (sharks). Each level plays a role in ecosystem stability, nutrient cycling, and energy transfer.
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संबंधित प्रश्न
List two biotic components of a biosphere.
In the following food chain, 100 J of energy is available to the lion. How much energy was available to the producer?
Plants → Deer → Lion
Why are plants called producers?
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.
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?
At which trophic level a person is feeding when he is eating eggs.
Construct a short foodchain, ending with man.
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms can trap solar energy to make food?
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
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?
Fill in the following blank with suitable word :
Pesticides enter the food chain at the ...........level
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent
Which of the following gets the minimum energy through the food chain in an ecosystem?
(a) carnivore
(b) large carnivore
(c) producer
(d) herbivore
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.
Which statement is correct with respect to the food chain?
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
