MCQ
Protects Chlorophyll 'A' from photooxidation:
- AChlorophyll B
- BCarotene
- CXanthophyll
- ✓All of these
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$I$. Located at lateral wall of the right atrium
$II$. Heart of heart
$III$. It initiates the rhythmic contractile activity of the heart
$IV$. It is called pace keeper of the heart
$V$. It is called pace maker of the heart
The option with correct statements is/are