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Biological Classification — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBiological Classification3 Marks
Question
State economically important uses of:
heterotrophic bacteria
✓

Answer

Heterotrophic bacteria:
  1. Many bacteria like Lactobacillus helps in the production of curd from milk.
  2. They act as decomposers and help in the formation of humus e.g. Pseudomonas.
  3. Many antibiotics are obtained from some species of bacteria like streptomyces, Bacillus etc.
  4. Many soil bacteria help in fixation of atmospheric nitrogen like Rhizobium (Symbiotic), Azotobacter (Free living).

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