Explain the role of plants in adding water vapour into atmosphere. Share with your friends Share 0 Aayushi Sharma answered this the plants transspire . in the process of transpiration plants release water in the air -1 View Full Answer Sara answered this transpiration 1 Rishita Mohan answered this They add water vapour to the atmosphere through transpiration 0 Winx Club answered this They add water vapour to the atmosphere through transpiration 0 Raghav answered this through transpiration 0