They would dehydrate too rapidly and die. Plants (well, plants with true vascular systems) need to have water to dehydrate from the leaves to help draw the water up from the soil. This is transpiration, but without the waxy cuticle this would occur at an excessive rate, killing the plant.
Because blue pigment in nature
You can carry out a test ,
1- take a sample of the air in a test tube
2-add limewater to the test tube
3- result : if it turns milky/cloudy it has microorganisms
4- reason: because every microorganism respires , and so it produces Carbon dioxide .
and limewater is the test to show the presence of Carbon dioxide .
