Acting Labour leader Harriet Harman has said Labour will not hesitate to hold the Government to account if it does not act in the country's best interests, as she responded to the Queen's Speech.
Ms Harman joked she shared the status of "interim leader" with David Cameron but congratulated him on returning to the Commons as Prime Minister.
She insisted that her party will be "a determined, forensic and vocal opposition".
Where you act in the interests of the country, we will support the Government. When you don't, we will not hesitate to be a determined, forensic and vocal opposition and that is what every one of our 232 Labour MPs will do.
Britain faces a fragile future - for our economy, our constitution and our public services.
Although we are seeing economic growth return, its benefits are not being shared and the economy remains fragile.
Compared to other countries, Britain's productivity lags behind. Tax revenues have fallen short of where the Government said in 2010 that they would be now, meaning it's taking longer to reduce the deficit.
Britain cannot succeed by low skilled, low wage, insecure employment with a race to the bottom. The path to economic prosperity and recovery must be with a high skilled, long term approach.
But our productivity is being held back by a lack of investment in training, infrastructure and industry.
The party said the flower was worn in homage to poet Hugh MacDiarmid who wrote the ode 'The Little White Rose of Scotland'.
An EU referendum, more Scottish powers and tax freezes - but Cameron stopped short of scrapping the Human Rights Act, for now.
More powers for Wales, a ban on income tax rises and more free childcare are at the heart of the Conservative's Queen's Speech.