Question

Which of the following organelles is present in cyanobacteria which are photosynthetic prokaryotes?
I. Chloroplasts
II. Nucleus
III. Ribosomes

• A. I only
• B. II only
• C. III only
• D. I and II only
• E. I and III only

Answer 1

The correct option is C III only

The photosynthetic prokaryotes, cyanobacteria lack a membrane-bound nucleus, mitochondria, golgi apparatus, chloroplasts, and endoplasmic reticulum. However, the funtions that are carried out by these organelles in eukaryotes are carreid out in cyanobacteria by its cell memebrane. Photosynthesis in cyanobacteria is performed in distinctive folds in the outer membrane. Nevertheless, ribosomes are present.

So, the correct answer is option C.