Coach Allen Clarke has retained the same run out side for the first time in the championship, but has made two changes to the replacements. Prop Adam Macklin comes into the match 22 in place of Jack O'Connell.
Out half Andrew Burke, who started the first game of the Championship against France, has returned from injury and comes onto the bench joining fellow Academy player and Garryowen man Conor Murray.
Ireland Coach Allen Clarke said "The win against England was a reflection of the strength of the squad's character and resolve. However, there were particular aspects of our game we were not content with and these have received special attention this week".
"Scotland has shown they are a team to be reckoned with and respected, particularly at home. We are aware of the competitive challenge ahead and the levels of performance required. Our aim is clear - to keep progressing and improving as individuals and ultimately as a team".
Ireland U20 Team v Scotland U20:
15 - David Kearney (Lansdowne/Leinster)
14 - Ronan O'Mahony (Garryowen/Munster)
13 - Ian McKinley (UCD/Leinster)
12 - Eamonn Sheridan (Lansdowne/Leinster)
11 - Michael Keating (Clontarf/Leinster)
10 - Ian Madigan (Blackrock College/Leinster)
9 - Matthew Healy (Lansdowne/Leinster)
1 - Paddy McAllister (Ballynahinch/Ulster)
2 - Thomas Sexton (Old Belvedere/Leinster)
3 - Jack McGrath (St. Mary's College/Leinster)
4 - Ciaran Ruddock (Neath/Exiles)
5 - James Sandford (Queens University/Ulster)
6 - Rhys Ruddock (Millfield School/Exiles)
7 - Dominic Ryan (Lansdowne/Leinster)
8 - Peter O'Mahony (Cork Constitution/Munster) Captain
16 - David McGregor (Ballynahinch/Ulster)
17 - Adam Macklin (Belfast Harlequins/Ulster)
18 - Mark Flanagan (UCD/Leinster)
19 - Michael Noone (Seapoint/Leinster)
20 - Conor Murray (Garryowen/Munster)
21 - Andrew Burke (Garryowen/Munster)
22 - Shane Gahan (Lansdowne/Leinster)