The SNP has chosen its MPs to sit on the select committees which oversee the work of Whitehall departments.
The watchdog considers how Government policies and programmes contribute to environmental protection and sustainable development, auditing performance against targets in those areas.
The party’s Paul Monaghan will sit on Efra, which covers Defra, chaired by Conservative MP Neil Parish.
Separately, Conservative MP Rebecca Pow revealed on Twitter she will be on Efra, and the information was re-Tweeted by Efra’s account.
Other SNP members include Michelle Thomson who will sit on the Business, Innovation and Skills Committee, chaired by Labour MP Iain Wright.
Alison Thewliss will be part of the Communities and Local Government Committee, chaired by Labour’s Clive Betts
No SNP MPs will sit on the Energy and Climate Change watchdog, which will be chaired by the party’s Angus MacNeil.
Westminster SNP Leader Angus Robertson said: ““The SNP has a huge range of talent in our Westminster parliamentary group and they will make a positive contribution in the committees which play such an important role in holding the Government to account.
The other parties are expected to announce their committee members before chancellor George Osborne’s Budget on 8 July.