Pratibha
from
Vaels billabong international, Chennai
Subject :NSO Class : Class 4
Refer to the given food chain operating in a small pond.
An organism ‘X’ was introduced in the community which exclusively feeds on tadpole population. Which of the following graphs correctly shows the changes in populations of water insect and small fish over time after introduction of organism X?
A
B
C
D
Can somebody pls explain the solution
Ans 1: (Master Answer)
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Ans 2:
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Rishaan Dixit
from
DPS Noida, Noida
Class : Class 4
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
Ans 3:
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Aarush Pandya
from
Inventure Academy, Bangalore
Class : Class 8
The correct answer is C because if organism X wipes out all tadpoles in the community, then water insects' population grows with nothing to eat them. The small fish die because they have nothing to eat, and soon the big fish die too.
Ans 4:
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Abhigyan Sinha
from
Podar International School, Powai, Mumbai, Mumbai
Class : Class 7
correct answer is C
Ans 7:
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Manjeet Prajapati
from
Saint Xavier College BHEL Jhansi , Jhansi
Class : Class 4
In the given food chain, tadpole feeds on water insect and in turn is eaten by small fish. If population of tadpole will decline with time then small fish population will also decrease as former is the food of later. On the other hand, water insect population will be positively affected because in the absence of predator prey population reproduces and flourishes.
Ans 8:
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Ans 11:
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Ashwak
from
Cambridge, Jalandhar
Class : Class 8
Aarush , there will be not enough plants to feed so many water insects . So, at a particular time all plants will finish . So , there will be nothing left for the water insects so they will also die !