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What Would Happen to the Number of Grass Plants and Foxes If the Number of Rabbits Increased? - Science

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प्रश्न

What would happen to the number of grass plants and foxes if the number of rabbits increased?

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उत्तर

If the number of rabbits increases, it will lead to rabbits consuming more grass plants, and hence grass plants will become sparser. As foxes consume rabbits, any increase in the number of rabbits will lead to an increase in the number of foxes.

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पाठ 5: Our Environment - Exercise 1 [पृष्ठ २३०]

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 5 Our Environment
Exercise 1 | Q 79.1 | पृष्ठ २३०

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संबंधित प्रश्‍न

Give reason to justify the following: Flow of energy in a food chain is unidirectional.


Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants


Name one decomposer.


What will happen if we kill all the organisms in one trophic level?


Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?


What will happen if deer is missing in the food chain given below?

Grass → Deer → Tiger


One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator


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?


Will the levels of biological magnification be different at different levels of the ecosystem?


Explain why, the flow of energy in the ecosystem is said to be unidirectional.


Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun :
Small algae → Zooplankton → Fish → Big fish


Name and state the law given by Lindeman which tells us how much energy entering a particular trophic level of organisms is available for trasnsfer to the next higher trophic level.


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


An aquatic food chain comprises of the organisms like tadpoles, weeds, fish and water beetles. The organism which gets the minimum energy through this food chain is :
(a) water beetles
(b) tadpoles
(c) weeds
(d) fish


In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the wheat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body?
(a) snake
(b) eagle
(c) mice
(d) peacock


Bacteria and fungi are called decomposers.


Write the importance of the food chain.


Food chains are very important for the survival of most species.

Matter and energy are two fundamental inputs of an ecosystem. Movement of:


Observe the food web and answer the questions given below:

Why do all food chains start with plants?


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