Answer the following questions by selecting the most appropriate optio...
Answer:
Introduction: Nodules with nitrogen-fixing bacteria are present in certain plants. These nodules help in the process of nitrogen fixation and provide plants with essential nutrients.
Explanation:
The correct option is (c) gram. Gram or chickpea is a legume crop that has nodules with nitrogen-fixing bacteria present in its roots. These nodules are formed when the plant roots come in contact with bacteria called Rhizobia. The bacteria enter the plant roots and form nodules that fix atmospheric nitrogen into a form that can be used by the plant.
Other legume crops like peas, lentils, and beans also have similar nodules with nitrogen-fixing bacteria. These crops are important for sustainable agriculture as they can reduce the use of synthetic fertilizers and improve soil fertility.
Mustard, wheat, and cotton are not legume crops and do not have nodules with nitrogen-fixing bacteria in their roots.
Conclusion: In conclusion, nodules with nitrogen-fixing bacteria are present in legume crops like gram, peas, lentils, and beans. These nodules help in the process of nitrogen fixation and provide plants with essential nutrients.