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प्रश्न
Fill in the following blank with suitable word :
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............
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उत्तर
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a food chain.
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संबंधित प्रश्न
Which of the following are always at the second tropic level of food chains?
Give reason to justify the following: Flow of energy in a food chain is unidirectional.
A food chain represents a unidirectional flow of X. What is X?
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
Construct a short foodchain, ending with man.
Give one example of a simple food chain.
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms are (i) predators, and (ii) prey?
The following is a food chain that ends with human :
How does this food chain differ form a usual food chain involving human such as : plants → goat → human?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name the organism which Y could be.
Name two predators of snakes in a food web operating in a forest ecosystem.
What is meant by bioconcentration of pesticides
The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.
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.
Primary consumers that eat plants are called _______.
Natural agents like ______ are the decomposition factors breaking complex forms into simpler units.
______ obtained energy from the chemical breakdown of dead organisms.
Define – Heterotrophs.
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.
