Lewis Reid and Cameron Bruce took their place in the Young Queen’s Park side just three days after getting a late taste of first team action with the versatile Lewis Moore and striker Scott Williamson also getting a run-out.
Celtic B pushed the visitors back from the first whistle and for the first four minutes the Spiders were hemmed in their own half however they refused to panic and passed their way out of trouble until they got a foothold in the game.
The first sign of threat from Queen’s came on six minutes when Lennon Connolly shot low in Celtic goalkeeper Josh Clarke’s hands from 20 yards after being set-up by Andrew Lind.
Seven minutes later a good move on the right allowed Moore to advance deep into home territory with the wide-man just unable to get a cross in after it looked like he had been fouled in the box.
Midway through the first half Williamson was in a good position to open the scoring as he ran clear from the half-way line to pick up a Connolly pass however just as he was away to shoot Clarke made a fine diving block.
On 26 minutes the Spiders came close again as a corner from the left was played out to Bruce and his deft chip beat Clarke however it hit the inside of the far post and bounced to safety.
Sixty seconds later the woodwork rescued Queen’s Park as a firmly hit shot from Daniel Kelly came bouncing back into play.
As Celtic continued to press Bruce chested away a six yard strike from Adam Brooks that looked net-bound.
Celtic got their noses in front on 37 minutes when Ben Summers drilled in from 18 yards after his initial effort had been blocked.
The home side were quick out of the blocks at the restart with Heraghty denying Tsoanelo Letsosa after a defence splitting pass with the shot-stopper then doing well to push away a 20 yarder from Summers.
Queen’s again worked their way into the half and on 50 minutes it looked like Williamson had a shooting opportunity however he was eventually crowded out.
The striker was unfortunate again shortly afterwards when the quick-thinking Heraghty sent a clearance over the home defence that looked to have released Williamson with Clarke delighted that the ball bounced quickly off the turf and into his hands.
Liam McLeish almost grabbed a fortunate leveller on 55 minutes when the ball was kicked against him following a scramble but his ricochet drifted just wide.
As the visitors enjoyed their best spell Williamson drifted in from the left and helped to tee up Callum Biggar with Queen’s denied an equaliser when Bosun Lawal popped up on the line to clear away Biggar’s shot.
Letsosa looked to ensure that there was no way back for the visitors on 74 minutes when he got through on a one on one situation but the Celtic man fired wide.
With two minutes left substitute Timam Scott lost his marker when he cut in from the right however his left footed curling shot drifted wide and no equaliser was seen.
In the final minute Celtic made sure of the win when Letsosa drilled in after a cross from the left was deflected into his path.
Queen’s Park: Jacques Heraghty, Lewis Moore (Timam Scott, Cameron Bruce, Calum Biggar, Scott Williamson (Alex Fairlie 86’), Kane Thomson, Lewis Reid, Andrew Lind, Liam McLeish (Zach Mauchin 80’), Lennon Connolly, Joseph Smith (Liam McQuaid 80’).
Subs not used: Liam Russell (G/k), Michael Collie, Josh Howe.
Celtic – Josh Clarke, Ben McPherson (Daniel Kelly 80), Matthew Anderson (Magnus MacKenzie 87), Bosun Lawal, Mitchell Robertson, Daniel Kelly, Adam Brooks (Ben Quinn 61), Ben Summers, Joey Dawson (Joseph Murphy 61), MacKenzie Carse, Tsoanelo Letsosa.
Subs not used: Joe Morrison, Corey Thomson, Josh Dede, Lenny Agbaire