Qs. Which of the following cell organelles has never been isolated? a) Lysosomes b) Chloroplast c) Peroxisomes d) Spherosomes e) Vacuole

The correct answer is d).

Spherosomes are very small organelles which are detached from ER. They are found only in cells of higher plants, and are mostly neutral. So, it has been very difficult to isolate them.