Final answer:
In a series connection of two Daniell cells, electrons flow from the anode of the first cell to the cathode of the second cell. The total net voltage in the circuit is the sum of the individual voltages of the two cells.
Step-by-step explanation:
In a Daniell cell, the flow of electrons from the anode to the cathode is caused by the chemical reaction that takes place in the cell. The anode undergoes oxidation, losing electrons and becoming negatively charged, while the cathode undergoes reduction, gaining those electrons and becoming positively charged. The flow of electrons can be visualized when two Daniell cells are connected in series, with the anode of one cell connected to the cathode of the other. In this case, the electrons flow from the anode of the first cell to the cathode of the second cell. The total net voltage in the circuit would be the sum of the individual voltages of the two cells.