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प्रश्न
What would happen to the number of grass plants and foxes if the number of rabbits decreased?
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उत्तर
If the number of rabbits decreases, then there will be less food for foxes. Hence, they will not be able to survive, because of the shortage of food, and their number will decrease. A decrease in the number of rabbits will lead to an increase in the density of grass plants, as there will be fewer rabbits to consume them.
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संबंधित प्रश्न
Give reason to justify the following: The existence of decomposers is essential in a biosphere.
The first trophic level in a food chain is always a green plant. Why ?
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
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At which trophic level a person is feeding when he is eating fish.
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Write a food chain comprising all the given organisms.
What would happen to the number of rabbits and grass plants if the number of foxes increased?
What would happen to the number of rabbits and grass plants if the number of foxes decreased?
What is ten per cent law? Explain with an example.
Explain how harmful chemicals enter our bodies.
What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight
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.
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Differentiate between herbivores and carnivores.
In a food chain, the third trophic level is always occupied by
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- Grass, lion, rabbit, wolf
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- Wolf, grass, snake, tiger
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