During the process of root nodule formation, which of the following is the initial signal molecule released by the plant roots that attracts rhizobia?

Which one of the following is an amide involved in nitrogen assimilitaion by plants?

The pink color inside a root nodule is due to the presence of:

Root nodules in Alnus is formed by.

Which two important amides found in the plants are structural part of proteins

In root nodules of legumes, leghaemoglobin is important because it

What is the primary benefit for leguminous plants in forming root nodules with nitrogen-fixing bacteria?

The infection thread, crucial for rhizobial entry into the root hair, is primarily composed of which plant cell wall component?

Which of these is NOT a characteristic feature of the root nodules formed during legume-rhizobia symbiosis?

The enzyme nitrogenase, crucial for biological nitrogen fixation, is highly sensitive to oxygen. Which of the following mechanisms protects nitrogenase from oxygen inactivation in symbiotic nitrogen-fixing bacteria?

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