मराठी

Consider the Food Chain : Grass → Deer → Lion What Will Happen If All the Lions Are Removed from the Above Food Chain? - Science

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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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पाठ 5: Our Environment - Exercise 1 [पृष्ठ २२७]

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 5 Our Environment
Exercise 1 | Q 27 | पृष्ठ २२७

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संबंधित प्रश्‍न

The first trophic level in a food chain is always a green plant. Why ?


"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?


Explain how the pesticides enter a food chain and subsequently get into our body.


Why are plants called producers?


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


Write down a food chain in the sea.


At which trophic level a person is feeding when he is eating apple.


Write one or two word for the following statement/definition :

Organisms which depend on the producers for food either directly or indirectly


Which of the following are decomposers of dead organisms?

Bacteria Fungi Viruses
(a) no yes yes
(b) yes no yes
(c) yes yes  no
(d) yes yes yes

The sea water contains water beetles, tadpole, fish and weeds.

Which organism is a secondary consumer?


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.


Explain how harmful chemicals enter our bodies.


What is meant by bioconcentration of pesticides


The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid


What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.


Give one example of a food chain in an aquatic ecosystem?


______ obtained energy from the chemical breakdown of dead organisms.


Each level in the food chain is called a ______ level.


In a food chain grasshopper gets energy by eating frog.


Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.

Reason (R): The flow of energy in a food chain is unidirectional.


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