With the score at 1-1, Aribo met James Tavernier's cross with a header which he flicked on for Morelos to convert in the 71st minute.
😁 Three Goals. Three Points. pic.twitter.com/DbpwEHzU14— Rangers Football Club (@RangersFC) September 14, 2019
The 23-year-old was replaced four minutes later by Andy King but Brandon Barker secured the maximum points for Steven Gerrard's men in the 79th minute.
During the week, the former Charlton Athletic midfielder opened his goal account for Nigeria in their 2-2 draw against Ukraine in an international friendly fixture.
Aribo has played in every of one Rangers' matches this season and has helped them to second in the Premiership table with 12 points from five games.