Winged pollen grains are a characteristic feature of the gymnosperm Pinus. These 'wings' are saccate extensions of the exine (the outer layer of the pollen wall) that increase the surface area to facilitate dispersal by wind currents, a process known as anemophily . While Cycas is also wind-pollinated, it does not possess winged pollen. Mango and Mustard are angiosperms and do not have this structural adaptation. This question follows the sequence of the NEET 2018 biology exam .