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प्रश्न
The following is a food chain that ends with human :
plants → bee → human
How do bees provide food for humans?
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उत्तर
Humans obtain honey made by bees and consume it as food.
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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: The existence of decomposers is essential in a biosphere.
"Our food grains such as wheat and rice, the vegetables and fruits and even meat are found to contain varying amounts of pesticide residues." State the reason to explain how and why it happens?
Which of the following constitute a food-chain?
What will happen if we kill all the organisms in one trophic level?
Define decomposers.
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
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 sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
The following is a food chain that ends with human :
Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.
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.
What would happen to the number of rabbits and grass plants if the number of foxes increased?
What would happen to the number of grass plants and foxes if the number of rabbits increased?
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
Explain why, a food chain usually cannot have more than three or four steps.
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
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.
Give one example of a food chain in an aquatic ecosystem?
In the following food chain, only 2J of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.
GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK
