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Which of the following is a characteristic of rhizobia?

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Question: Which of the following is a characteristic of rhizobia?

Options:

  1. They are aerobic bacteria
  2. They form nodules on plant roots
  3. They are pathogenic to plants
  4. They are unicellular fungi

Correct Answer: They form nodules on plant roots

Solution: 

Rhizobia are bacteria that form symbiotic nodules on the roots of leguminous plants, facilitating nitrogen fixation.

Which of the following is a characteristic of rhizobia?

Practice Questions

Q1
Which of the following is a characteristic of rhizobia?
  1. They are aerobic bacteria
  2. They form nodules on plant roots
  3. They are pathogenic to plants
  4. They are unicellular fungi

Questions & Step-by-Step Solutions

Which of the following is a characteristic of rhizobia?
Correct Answer: They form symbiotic nodules on leguminous plants.
  • Step 1: Understand what rhizobia are. They are a type of bacteria.
  • Step 2: Learn that rhizobia live in the soil and can attach to the roots of certain plants.
  • Step 3: Identify that rhizobia specifically form nodules on the roots of leguminous plants, like beans and peas.
  • Step 4: Know that these nodules help the plants by fixing nitrogen from the air into a form that the plants can use for growth.
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