proplastid

The proplastid contains a single nucleoid located in the centre of the plastid.

Mg2+ is probably taken up into chloroplasts to the greatest extent during the light induced development from proplastid to chloroplast or etioplast to chloroplast.

There is no proplastid differentiation-when an algal cell divides, its chloroplast divides along with it, and each daughter cell receives a mature chloroplast.

Light, however, does not guarantee that a proplastid will develop into a chloroplast-what type of plastid a proplastid becomes is largely influenced by the kind of cell it resides in.