As urine is actually stored in the urinary bladder, which is a muscular organ and under our nervous control. The only incorrect statement is that urine is stored in the urethra.

Egestion involves elimination of the remaining undigested food Material by rupturing of cell wall at any time.

In first test tube, the following reaction involves: CaCO₃ + 2HCl → CO₂ + H₂O + CaCl₂ CO2 gas is evolved here. In second test tube, the following reaction takes ...