During nodule formation, the curling of root hairs is induced by:
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Correct answer: Rhizobium bacteria
When Rhizobium bacteria come into contact with a susceptible root hair, they release chemicals that cause the root hair to curl. This allows the bacteria to invade and form an infection thread.
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More Nitrogen cycle in nature questions
- The first stable product of biological nitrogen fixation is:
- At physiological pH, ammonia is protonated to form $NH_4^+$ ions. Most plants absorb nitrogen as nitrates, but if they accumulate ammonia,…
- In 'Reductive Amination', ammonia reacts with which organic acid to form Glutamic acid?
- The transfer of an amino group from one amino acid to the keto group of a keto acid is called:
- Asparagine and glutamine are two important ______ found in plants that contain more nitrogen than amino acids.
- Some plants, like soyabean, export fixed nitrogen as specialized compounds called: