<span>The importance of sexual reproduction in angiosperms is same as sexual reproduction of others organims that is to provide genetic variation. However, sexual reproduction of angiosperms also produce seed. Production of seed with fruit is what specific to angiosperm this phylum. so you can find some points regard the advantanges of producing seeds in angiosperms. This can used as addition point.
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The correct answer to my knowledge would be 45.
Assuming that the 10 soils are each represented by A, B, C, D, E, F, G, H, I, J.
A can combine with 9 others as: AB AC AD AE A F AG AH AI AJ
B can combine as: BC BD BE BF BG BH BI BJ
C as: CD CE CF CG CH CI CJ
D as: DE DF DG DH DI DJ
E as: EF EG EH EI EJ
F as: FG FH FI FJ
G as: GH GI GJ
H as: HI HJ
I as: IJ
Once you add all the combinations together, you get 45.
Hoping this helped you!
