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प्रश्न
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
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उत्तर
If all the lions are removed from the above food chain, the population of deer will increase greatly, as there will be no lion to consume them as food. Also, the density of grass will decrease as the high population of deer will lead to excessive grazing of grass.
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संबंधित प्रश्न
State with reason any two possible consequences of elimination of decomposers from the Earth.
In a food chain of frog, grass, insect and snake, assign trophic level to frog.
The following statement is true or false :
In biology, human beings are called producers.
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
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(a) carnivores
(b) herbivores
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(d) producers
Which of the following statement is incorrect?
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?
Match the terms given in column I with the terms given in column II and column III having the same meaning :
| Column I | Column II | Column III |
| (1) Secondary consumer | Herbivore | 1st trophic level |
| (2) Primary consume | Autotroph | 3rd trophic level |
| (3) Producer | Carnivore | 4th trophic level |
| (4) Tertiary consumer | Large carnivore | 2nd trophic level |
Fill in the following blank with suitable word :
Plants → Antelope → ............
Consider the following food chain
(i) Plants → Mice → Snakes → Hawks
(ii) Plants → Mice →Hawks
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Small algae → Zooplankton → Fish → Big fish
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Each level in the food chain is called a ______ level.
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
