Which of the following is incorrect about cyanobacteria?

Question

Question

This question was previously asked in

HPSC Assistant Professor 2018 Botany (Official Paper)

Answer 1

The correct answer is The dominant pigment is phycocyanin and cholorphyll b.

Explanation:

Cyanobacteria, also known as blue-green algae, are a group of photosynthetic bacteria that are found in a variety of aquatic and terrestrial environments.
Cyanobacteria primarily contain phycocyanin and chlorophyll a as their dominant pigments. Chlorophyll b is not a major pigment in cyanobacteria; it is more common in green algae and higher plants.
Heterocysts are specialized nitrogen-fixing cells found in some filamentous cyanobacteria. They are not characteristic of all genera of cyanobacteria. Only certain genera like Anabaena and Nostoc have heterocysts.
These specialized cells provide an anaerobic environment necessary for the functioning of the nitrogenase enzyme, which is sensitive to oxygen.

Other Options:

The products of photosynthesis are glycogen and cyanophycin.

Cyanobacteria store the products of photosynthesis in the form of glycogen and cyanophycin. Glycogen serves as an energy reserve, while cyanophycin is a storage compound for nitrogen and carbon.

Flagellated motile cells never occur in the domain of blue-green algae.

Cyanobacteria do not produce flagellated motile cells. They move using a gliding mechanism or by buoyancy regulation through gas vesicles.