Botany online 1996-2004. No further update, only historical document of botanical science!
Mougeotia with plate-shaped Chloroplast
a. Epistrophe Position (weak light intensity); b. with increased light intensity the chloroplast rotates from the epistrophe to the oblique position. The figure shows that the chloroplast is not a rigid plate that rotates as a whole, in the left part the rotation is complete, in the right part it has not yet started.c. Oblique Position (at high light intensity) (W. HAUPT).