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MHT CET Medical202624 April 2026Morning ShiftBiologyMicrobes in Human WelfareActual

Which one of the following pair is INCORRECTLY matched?

Options

  1. APhosphate Solubilizing bio fertilizer — Agrobacterium
  2. BSymbiotic nitrogen fixing microbe — Frankia
  3. CNon symbiotic nitrogen fixing microbe — Beijerinkia
  4. DFree living mycoherbicide — Bacillus thuringiensis

Correct answer

D. Free living mycoherbicide — Bacillus thuringiensis

Step-by-step solution

Bacillus thuringiensis is a bacterium used as a bioinsecticide to control insect pests (such as butterfly caterpillars). It is not a mycoherbicide. Mycoherbicides are fungi used to control weeds (e.g., Phytophthora palmivora ). Agrobacterium species are known to act as phosphate solubilizing bacteria (PSB). Frankia is a symbiotic nitrogen-fixing microbe found in the root nodules of non-leguminous plants like Alnus . Beijerinckia is a free-living (non-symbiotic) aerobic nitrogen-fixing bacterium. Therefore, the inco

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