These substances can, however, be dissolved out in water, and the green coloring matter of the chloroplast then becomes visible.
Sometimes several pyrenoids occur in each chloroplast.
Each cell is nearly circular and a single bright green chloroplast fills the entire cell.
A chloroplast is an organelle in green plants containing the light harvesting pigment chlorophyll.
The chloroplast consists of two parts, a colorless ground substance, and a green coloring matter, which is contained either in the form of fibrils, or in more or less regular spherical masses, in the colorless ground-mass.