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DIFFERENCE BETWEEN PLANT, ALGAL AND BACTERIAL PHOTOSYNTHESIS

 Difference between Plant, Algal and Bacterial Photosynthesis

Features

Plant & Algal Photosynthesis

Bacterial Photosynthesis

Organisms

Plant, Algae & Cyanobacteria

Purple bacteria & Green bacteria

Oxygen production

Oxygenic and Aerobic

Anoxygenic and Anaerobic

Photosynthetic pigments

Chlorophylls, Carotenoids and Phycobilins (400 to 600 nm)

Bacteriochlorophyll, Bacterioviridin and Open chain aliphatic Carotenoids (above 700 nm)

Types of Chlorophyll

Chlorophyll – a and Chlorophyll – c (only in certain Marine algae)

Bacteriochlorophyll – a (Green bacteria) & Bacteriochlorophyll – a or b (Purple bacteria)

Site of Photosynthesis

Chloroplast with Thylakoids (Plants & Algae) and Thylakoids (Cyanobacteria)

Chromosomes (Green bacteria) and Chromatophores (Purple bacteria)

Substance that reduce CO2

H2 atoms of H2O

Sulfur, Sulfur compounds and H2

CO2 reductant

NADPH+ & H+

NADH+ & H+

Photosynthetic electron donor

H2O

H2S

Photosystem – I (Cyclic phosphorylation)

Present

Present

Photosystem – II (Non - cyclic phosphorylation)

Present

Absent

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