MCQ
Cell aggregate body plan is found in the
- AVolvox
- BColonial protozoans
- ✓Porifera
- DBoth $(a)$ and $ (c) $
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$I$. The impulse of the heart beat originates from $SAN$
$II$. Rate of the heart is determined by $SAN$
$III$. Bundle of His/AV bundle is present in the interventricular septum
$IV$. Atrio Ventricular Node $(AVN)$ is situated in the lower left corner of the right auricle
Choose the correct option