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Respiration — Bio Zoology STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyRespiration1 Mark
MCQ
The function of pleural fluid is to ………..
  • A
    keep the lungs intact
  • B
    protect the lungs from getting firm
  • C
    maintain the texture of the lungs
  • ✓
    reduces friction when lungs expand and contract
✓

Answer

Correct option: D.
reduces friction when lungs expand and contract
reduce friction when lungs expand and contract

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