The 25-year-old wore an Islamic headscarf as she made her first appearance of the tournament.
Benzina featured in the 1-0 win over South Korea, which was Morocco's first win at a Women's World Cup.
They are one of eight teams making their debut at this summer's tournament.
Benzina had been an unused substitute in Morocco's first World Cup game against Germany, where they were thrashed 6-0.
She started the match against South Korea and things started out a lot better for Morocco.
Read more on Women's World Cup
England star Keira Walsh's knee injury at Women's World Cup is NOT as bad as first feared
'Ridiculous': Chelsea fans revel in stunning James goal for England at Women's World Cup
Striker Ibtissam Jraidi scored in the sixth minute, for the country's first ever goal at the Women's World Cup.
Jraidi turned in Hanane Ait El Haj's cross and that proved to be enough to win the match.
Benzina, who was shown a yellow card during the match, played the full 90 minutes.
FIFA only lifted the ban on wearing hijabs in 2014, previously banning them for years on 'health and safety grounds'.
Most read in Football
Man United transfer news LIVE: Hojlund set to join, Maguire bid rejected
Man United agree Hojlund fee, Liverpool in shock Mbappe link, Bayern confident of Kane
Arsenal transfer news LIVE: Arteta talks striker plans, Kudus latest, Partey update
Liverpool to miss out on huge Sadio Mane bonuses once Bayern winger joins Al Nassr
The Under-17s Women's World Cup that year became the first tournament where players wore Muslim headscarves.
Morocco's final group stage match will be against Colombia on August 3.