Airdrie had two excellent chances to open the scoring in the opening 24 minutes, Morton's unnamed trialist producing saves to deny Ben Richards-Everton and Nathan Blockley
The goalkeeper was unable to keep out Lister's effort two minutes after half-time, though, the striker converting Blockley's cross from close range to notch his fifth goal of the season
The hosts almost salvaged a point in the 62nd minute but Declan McManus' right-footed effort cannoned back off the crossbar
The victory extends Airdrie's unbeaten streak to five matches, moving them four points off the play-offs
Source : PA
Source: PA