Answer:
Oxidation takes place at anode
Reduction takes place at cathode
In the equation Zn has changed to Zn2+. This means oxidation number of Zn has increased from 0 to +2. So Zn is oxidised.
In CuSO4 , Cu2+ and SO4 2- ions are present.
Cu2+ has changed to Cu(s) meaning oxidation number of Cu has reduced from +2 to 0. So Copper is reduced.
So Copper rod is the cathode since it has been reduced and Zn rod is the anode because it has been oxidised.
Also electrons always move from anode to cathode so that also shows us Copper is the cathode