MCQ
Capacity of human lung for air
- ✓$6000\,\, ml$
- B$1500 \,\,ml$
- C$1000 \,\,ml$
- D$500 \,\,ml$
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$I.$ It does not help in water conduction.
$II.$ It is also called alburnum.
$III.$ It is dark in colour but very soft.
$IV.$ It has tracheary elements, which are filled with tannin, resin, etc.