كتب : Hatem Maher
French-born forward Houssine Kharja fired the hosts in front after three minutes.
Porto winger Tarek Sektioui doubled Morocco's advantage in the 25th minute after converting a penalty.
Striker Nabil Baha, who plays for Spanish side Malaga, completed the rout three minutes past the hour mark with a superb diving header.
Zambia have been drawn along with Egypt in Group C of the World Cup qualifiers' final phase. The group also features Algeria and Rwanda.
Six-time African champions Egypt host Zambia in March 2009 in the qualifiers' opener.