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Solution


Q.

Winged pollen grains are present in                     [2018]
1 mustard    
2 Cycas  
3 mango     
4 Pinus  

Ans.

(4)

Each pollen grain of Pinus has two wing like structures which enable it to float in air, as an adaptation for dispersal by wind. Pollen grains of mustard, Cycas and mango are not winged.