MCQ
Which type of excretion is present in fishes?
- ✓Ammonotelic.
- BUreotelic.
- CUrecotelic.
- DNone of these.
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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