What is the significance of
a. leguminous plants associating symbiotically with rhizobium and
b. venus fly trap feeding on insects?
For fulfilling nitrogen requirements.
The significance of leguminous plants associate symbiotically with rhizobium and venus fly trap feeding on insects is to get their nitrogen supply. Legumes are supplied with nitrogen in nitrate form by Rhizobium bacteria and Venus fly trap (insectivorous plant) trap and kill insects. They use their digestive enzymes to extract the protein from killed insects.