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Life Processes in Animals — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceLife Processes in Animals1 Mark
MCQ
What feature of alveoli aids efficient gas exchange?
  • A
    Thick muscular walls
  • B
    Very few blood vessels
  • ✓
    Large surface area and thin walls
  • D
    Ability to store oxygen for later use
✓

Answer

Correct option: C.
Large surface area and thin walls
C

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