The function of zinc electrode in a galvanic cell is that it

The zinc electrode in a galvanic (voltaic) cell is the anode, where oxidation occurs, so it produces electrons for the external circuit.

Why: At the zinc electrode, zinc atoms lose electrons and go into solution: \(\mathrm{Zn(s) \rightarrow Zn^{2+}(aq) + 2e^-}\). Those released electrons flow through the wire to the other half-cell.

• “Undergoes reduction” → Incorrect. Reduction happens at the cathode, not at zinc in a galvanic cell.
• “Serves as the positive electrode” → Incorrect. In a galvanic cell, the anode (zinc) is negative because it is the source of electrons; the cathode is positive.
• “Uses up electrons” → Incorrect. Electrons are consumed at the cathode (e.g., by metal ions being reduced), not at the zinc anode.

Exam tip: Ignore the option letters; pick the statement that says “zinc is oxidized / is the anode / produces electrons.”