MCQ
In cockroach, ootheca coveres...
- ASperms, in male
- ✓Fertilised eggs, in female
- CFertilised eggs, in male
- DSpermatheca, in female
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$(1)$ Radiography
$(2)$ $ELISA$
$(3)$ $CT-Scan$
$(4)$ $MRI$
$(5)$ $Widal$
$R$ : Ionic channels are absent in the area covered by myelin sheath therefore, depolarization occurs only at the nodes of Ranvier, resulting in saltatory or jumping conduction.
$X$ - $Y$