On a windy day, you observe the wind carrying away exposed seeds of a tree. Which would be losing its seeds?

a. Pterophyta

b. Angiosperms

c. Gymnosperms

The answer is (b.) Angiosperms

These type of trees have diverse array of mechanisms for wind such as Cottonwood. Cottonwood seeds are easily blown away by the winds. Winged seeds exists in Angiosperms. These seeds have large blades to provide aerodynamic surfaces so when it's blown it glides as it falls.