When a section of root nodule of a legume is examined it appears
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    Mineral Nutrition

    Multiple Choice QuestionsOne Word Answers

    1. Which pigment is present in the root nodules of legumes ?
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    2. Name the best known symbiotic nitrogen fixing bacterium.
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    3. What type of condition is created by leghaemoglobin in the root modules of legumes ?
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    4. How is nitrogenase enzyme protected ?
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    5. What is Hidden hunger in the case of plants?
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    6. Which kind of plants harbour nitrogen fixing bacteria in their root nodules ?
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    7. When a section of root nodule of a legume is examined it appears pinkish. Why ?

    The pink colour of the root is due to the presence of the pigment leg-haemoglobin. 
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    8. What is active absorption ?
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    9. What are Chemoautotrophs ?
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    10. Who discovered biological nitrogen fixation ?
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