Explanation
Cyanobacteria are a phylum of photosynthetic bacteria that are found in various aquatic and terrestrial habitats. They are characterized by the presence of chlorophyll a and phycobiliproteins, which allow them to perform oxygenic photosynthesis, similar to plants.
The options given are:
A: Peptidoglycan Cell Wall - Cyanobacteria have a cell wall made up of peptidoglycan, a characteristic feature of bacteria.
B: Presence Of Chlorophyll a - Cyanobacteria contain chlorophyll a, a pigment involved in photosynthesis, and are the only prokaryotes known to carry out oxygenic photosynthesis.
C: Presence Of Pyrenoid - Pyrenoid is a structure found in some algae that is involved in the storage and utilization of carbohydrates, but it is not present in cyanobacteria.
D: Absence Of Flagellation - Cyanobacteria lack flagella, which are used for movement in many other bacterial species.
Therefore, the correct answer is C: Presence of Pyrenoid. Cyanobacteria do not possess this structure, unlike some algae.
