Question

Which of the following organelle is present in prokaryotes?

• A. Nucleus
• B. Mitochondria
• C. Vacuoles
• D. Endoplasmic reticulum

Answer 1

Answer: (B), (C)

The correct options are
B Mitochondria
C Vacuoles

A prokaryotic is a simple single celled (unicellular) organism that lacks an organized nucleus or any other membrane bound organelle. Vacuoles such as gas vacuoles are present in prokaryotes. Gas vacuoles are membrane bound, spindle shaped vesicles, found in some planktonic bacteria and cyanobacteria that provides buoyancy to these cells by decreasing their overall cell density. Positive buoyancy is needed to keep the cells in the upper reaches of the water column, so that they can continue to perform photosynthesis. They are made up of a shell of protein that has a highly hydrophobic inner surface making it impermeable to water (and stopping water vapour from condensing inside) but permeable to most gases.

So, the correct answer is 'Mitochondria and vacuoles'.