Tommy Sheppard says that the Westminster government is 'fuelling the case' for Scottish independence.
An independent Scotland would be welcomed 'enthusiastically' back in to the EU.
Britain officially split from the European Union at 11pm, three-and-a-half years since the Brexit vote.
After 11pm, Britain will immediately enter a transition arrangement with the EU, keeping it aligned with Brussels.
Businesses leaders tell STV News the confusion caused by Brexit will continue after the UK leaves the EU.
MEPs ratified the withdrawal agreement as they said goodbye to British colleagues.
Constitutional relations secretary Michael Russell will meet with members of the UK Government later.
Some MPs cheered as royal assent was confirmed for the European Union (Withdrawal Agreement) Act.
A new report for the UK Government also calls for a fifth of Scotland to be reforested.
The First Minister announced fresh funding to expand legal support services for European citizens in Scotland.
Presiding officer Ken Macintosh said the flag will come down at 11pm on January 31, when the UK leaves the EU.
The European Union (Withdrawal Agreement) Bill was passed by 330 votes to 231.
The Scottish Crannog Centre said faster broadband has made a ‘huge difference’.
MSPs voted to reject the UK Bill by votes to 92 votes to 29.
The First Minister said there is 'growing cross-party recognition' the question of a second vote should not be decided at Westminster.