NEET BIOLOGY

Detailed explanation-1: -Cyanobacteria may be unicellular or filamentous. Many have sheaths to bind other cells or filaments into colonies. Cyanobacteria contain only one form of chlorophyll, chlorophyll a, a green pigment.

Detailed explanation-2: -Cyanobacteria, formerly known as blue-green algae, are photosynthetic microscopic organisms that are technically bacteria. They were originally called blue-green algae because dense growths often turn the water green, blue-green or brownish-green.

Detailed explanation-3: -Cyanobacteria, which are also called blue-green algae are an ancient group of photosynthetic bacteria. Even though they’re called “blue-green algae” they’re actually bacteria. And bacteria are prokaryotic cells and they have no nucleus.

Detailed explanation-4: -Blue-green algae, often known as cyanobacteria, have chlorophyll and are able to perform oxygenic photosynthesis just like plants.

Detailed explanation-5: -Bacteriochlorophyll, C55D74O6N4Mg, is the major chlorophyll of various photosynthetic bacteria (Thiorhodaceae, Athiorhodaceae, and Hyphomicrobiaceae) (see Section VIII, G) (40, 57, 63, 65, 67, 98, 169–175).