D) Core of nucleic acid surrounded by protein sheath
Explanation
Pyrenoids are proteinaceous bodies present in chromatophores. These are considered to be associated with synthesis and storage of starch. In members of Chlorophyceae pyrenoids are surrounded by starch plates.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.