Answer:
I dunno if you still need help with this but: 
A. pollen grains 
B. Ovule
C. Petals
D. Stigma
E. Anther 
These structures allow sperm cells to move through the style: Pollen Tube
F. Receptacle
G. Sepal 
H. Pistil/Carpel
I. Stamen
Step-by-step explanation:
Hope this helps :)