Root nodules in Alnus is formed by.
Rhizobium
Azospirillum
Frankia
Clostridium
Related Questions
Nitrogenase, the enzyme responsible for converting atmospheric nitrogen to ammonia, is susceptible to inactivation by oxygen. How do free-living nitrogen-fixing bacteria like Azotobacter protect nitrogenase from oxygen?
Leghaemoglobin production
Symbiotic relationships with plants
High respiration rate
Formation of specialized cells
What is the primary benefit for leguminous plants in forming root nodules with nitrogen-fixing bacteria?
Increased water absorption
Protection from pathogens
Access to usable nitrogen
Enhanced photosynthesis
During the process of root nodule formation, which of the following is the initial signal molecule released by the plant roots that attracts rhizobia?
Flavonoids
Nod factors
Lectins
Cytokinins
Leg haemoglobin acts as?
Oxygen scavenger
scavenger
Oxygen delivery agent
none of the above
VAM is
Ectomycorrhizae
Endomycorrhizae
Both (a) and (b)
Ectoendomycorrhizae
Which one of the following is an amide involved in nitrogen assimilitaion by plants?
Glutamate
Alanine
Asparagine
Serine
The process of transfer of amino group from one amino acid to the keto group of a keto acid is called
Oxidative amination
Reductive amination
Transamination
Deamination
Which of the following is NOT a direct consequence of Nod factor signaling in the host plant during root nodule formation?
Root hair curling
Formation of infection threads
Cortical cell division leading to nodule primordia formation
Expression of nif genes in bacteroids
The symbiotic relationship between legumes and rhizobia is an example of:
Mutualism
Parasitism
Commensalism
Amensalism
