Monaghan has 30 caps for Ireland
Second row Sam Monaghan will make her first start of this Six Nations in the only change to Ireland's XV for Sunday's final game against Scotland at the Aviva Stadium.
Monaghan replaces Dorothy Wall, who is among the replacements, in the sole alteration from the33-12 win over Walesin Belfast.
The former co-captain was on the bench for the past three Six Nations matches after missing the opening game against England due to injury. will earn her 31st cap on Sunday.
Scott Bemand's side are aiming to complete the campaign unbeaten at home when they welcome Scotland to the Aviva, in what is set to be a record crowd of more than 30,000. the first standalone women's rugby match at the venue.
Scotland have lost their past three fixtures and sit fifth in the table, five points behind Ireland in third.
"It's been an absolute pleasure to have an hour. a half conversation discussing who is in your engine room," Bemand said.
"We enjoy selection. We've moved to a point now where we have got genuine competition for who can start, who can come on. bring impact off the bench.
"We're at the level now that we're starting to consider who we're playing against. what best fit for how we think the game is going to pattern out."
Guinness Women's Six Nations
Sunday 17 May, kick-off 14:30 BST
Aviva Stadium, Dublin
Watch every match live on BBC iPlayer. the BBC Sport website and app; listen to match commentaries on BBC Radio 5 Live, Sports Extra and BBC Sounds; follow live text and match highlights online
Bemand has named an unchanged backline with Stacey Flood, Beibhinn Parsons and Robyn O'Connor the back three.
In midfield, Eve Higgins and Aoife Dalton start as Emily Lane partners Dannah O'Brien at half-back.
In the front row, Ellena Perry, Cliodhna Moloney-MacDonald. Linda Djougang all are set to register their fifth consecutive start this Championship, with Monaghan coming in to join Fiona Tuite.
After scoring two tries against Wales, Brittany Hogan is selected at flanker, captain Erin King remains at openside. Aoife Wafer will wear the number eight jersey.
On the bench, Bemand has reverted to a 5:3 split with forwards Neve Jones, Sadhbh McGrath, Eilis Cahill, Dorothy Wall. Ruth Campbell on the bench alongside backs Katie Whelan, Vicky Elmes Kinlan and Niamh Gallagher.
"We're pretty well stocked," Bemand continued.
"We've gone back to a 5:3 this week and that's because of how we think the game will go.
"We're desperate to see Vicky Elms-Kinlan come on and bring her power game to the party. We're well stocked in that."
Ireland:Flood; Parsons, Dalton, Higgins, O'Connor; O'Brien, Lane; Perry, Moloney-MacDonald, Djougang, Monaghan, Tuite, Hogan, King (capt), Wafer.
Replacements:Jones, McGrath, Cahill, Wall, Campbell, Whelan, Elmes Kinlan, Gallagher.
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