SATHEE: Mineral Nutrition Ques 21

Mineral Nutrition Ques 21

21. Which of the following is a free living aerobic nonphotosynthetic nitrogen-fixer?

(a) Rhizobium

(b) Azotobacter

(c) Azospirillum

(d) Nostoc

Show Answer

Answer : b

Hints & Solution

(b) Rhizobium is a symbiotic nitrogen fixer. Azospirillum is a nitrogen fixing fungus and Nostoc is anaerobic.

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Mineral Nutrition

Mineral Nutrition Ques 21

21. Which of the following is a free living aerobic nonphotosynthetic nitrogen-fixer?

Answer : b

Hints & Solution

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