The product of reaction catalyzed by nitrogenase in root nodules of leguminous plants
Ammonia alone
Nitrate alone
Ammonia and oxygen
Ammonia and hydrogen
Related Questions
VAM is
Ectomycorrhizae
Endomycorrhizae
Both (a) and (b)
Ectoendomycorrhizae
A mutation in a legume plant prevents the formation of infection threads during rhizobial symbiosis. Which of the following processes would be MOST directly affected?
Recognition of the rhizobia by the root hairs
Curling of root hairs
Formation of the nodule meristem
Release of bacteria into the host cell cytoplasm
Which enzyme complex is responsible for the conversion of atmospheric nitrogen to ammonia within the root nodules?
Nitrogenase
Nitrate reductase
Nitrite reductase
Glutamine synthetase
Which two important amides found in the plants are structural part of proteins
Glutamate and ureides
Glycine and serine
Glutamine and asparagine
Asparagine and arginine
Which specific flavonoid is known to induce nod gene expression in Rhizobium leguminosarum when establishing symbiosis with pea plants?
Naringenin
Apigenin
Kaempferol
Luteolin
Leg haemoglobin acts as?
Oxygen scavenger
scavenger
Oxygen delivery agent
none of the above
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
The product of reaction catalyzed by nitrogenase in root nodules of leguminous plants
Ammonia alone
Nitrate alone
Ammonia and oxygen
Ammonia and hydrogen
Which element is converted into a usable form for plants within root nodules?
Phosphorus
Potassium
Nitrogen
Sulfur
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