Answer:
when we crossed Pp with pp out result will have a phenotype ratio of 2Pp:2Pp or Pp:Pp and genotype will be 50%Pp and 50%Pp.
Explanation:
You didn't attach a picture so i'll just explain how to find the number of stomatas/mm^2.
first you find the surface by multiplying the length by the width
0.1*0.1=0.01mm^2
now you count the numer of stomatas in the picture
in0.01mm^2 you have.........................x stomatas
in 1mm you have ...............................y stomatas
y=100x
I'm pretty sure it's answer D. It's the only answer choice that really makes sense.