Question

what is nodules? how are they helpful?​

Answer 1

Answer:

The roots of leguminous plants bear nodules. Nitrogen fixing bacteria, Rhizobium resides inside these modules. Rhizobium can directly utilises atmospheric nitrogen and converts it into nitrogenous compounds like ammonia and nitrates. ... This is the reason that root nodules are useful for plants Nitrogen-fixing bacteria, Rhizobium resides inside these root nodules, which utilises atmospheric nitrogen and converts it into nitrogenous compounds. In this way, plants get easy access to these chemicals which are good for plant growth. This is the reason that root nodules are useful for plants.

Answer 2

Answer:

Root nodules are extra lobes of certain plants such as peas and beans in which nitrogen-fixing bacteria are found. ... Bacteria in these root nodules convert the atmospheric nitrogen into nitrates which the plants can utilise. The plants use this nitrogen to synthesise proteins and other materials.18-Jul-2017