NEET BIOLOGY

Detailed explanation-1: -Hint: Cyanobacteria is also known as blue-green algae. They differ from other bacteria as cyanobacteria contain chlorophyll-a, while most bacteria do not contain chlorophyll. Chlorophyll-a is a pigment that gives them their characteristic blue-green color.

Detailed explanation-2: -What are cyanobacteria? Cyanobacteria are sometimes considered algae, but they are actually bacteria (prokaryotic), where the term “algae” is now reserved for eukaryotic organisms. They also derive their energy through photosynthesis, but lack a nucleus or membrane bound organelles, like chloroplasts.

Detailed explanation-3: -Similarities of Cyanobacteria with Bacteria: (i) Both, bacteria and cyanobacteria are prokaryotes (i.e., they have nucleus without nuclear membrane, lack membrane-bound plastids, possess 70S ribosomes, lack histone proteins, lack cell organelles, peptidoglycan present in cell wall, etc.).