Question

Which one of the following is not a photosynthetic diazotroph.

• A. Nostoc
• B. Frankie
• C. Anabaena
• D. Rhodospirillum

Answer 1

Answer: (A)

Nostoc

green plants carry out photosynthesis. photosynthesis is a physico chemical process in which plants uses light energy to drive the synthesis of organic compounds. Ultimately all living forms on earth depend on sunlight for energy. Photosynthesis is the primary source of food on earth and it is responsible for the release of oxygen into the atmosphere . Photosynthesis is an anabolic, redox, endothermic reaction. The plants or the bacteria who follows autotrophic mode of nutrition, are dependent on photosynthesis for the fulfillment of their nutritional requirements.