ICSE Class X Biology 2019 Solved Papers

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The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow:
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Question : 60
Total: 96
What is the fluid that accumulates in part 3 ?
Which is the main nitrogenous waste present in it?
Solution:  
Fluid is urine.
Urea is the main nitrogeneous waste in urine.
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