It acts as an accessory pigment! Hope this helps! Also sorry that it took 11 hrs. for people to answer! =)
1) Look at your microscope<span> eyepiece. After the eye piece </span>magnification<span> you will see a F.O.V, number. 3) Multiply your Answer by 1000 to convert to Microns (or move the decimal 3 spaces to the right.)</span>
They usually have Broad Leaves
I hope this helps!