Leghemoglobin, present in root nodules, plays a crucial role in nitrogen fixation by:
Protecting nitrogenase from oxygen
Providing oxygen to nitrogenase
Converting nitrogen to ammonia
Transporting nitrogen to bacteroids
Related Questions
The sensitivity of nitrogenase to oxygen necessitates protective mechanisms. Which of the following is NOT a strategy employed by nitrogen-fixing organisms to protect nitrogenase?
Producing leghaemoglobin
Maintaining a high respiration rate
Forming specialized heterocysts
Performing photosynthesis in the same cells as nitrogen fixation
Root nodules are primarily found in which part of the plant?
Stems
Leaves
Flowers
Roots
Which enzyme complex is responsible for the conversion of atmospheric nitrogen to ammonia within the root nodules?
Nitrogenase
Nitrate reductase
Nitrite reductase
Glutamine synthetase
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
Leg haemoglobin acts as?
Oxygen scavenger
scavenger
Oxygen delivery agent
none of the above
Which one of the following is an amide involved in nitrogen assimilitaion by plants?
Glutamate
Alanine
Asparagine
Serine
The infection thread, crucial for rhizobial entry into the root hair, is primarily composed of which plant cell wall component?
Cellulose
Pectin
Lignin
Suberin
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
The enzyme nitrogenase, found in the root nodules of leguminous plants, facilitates the production of which essential nutrient for plant growth?
Nitrite
Nitrate
Dinitrogen
Ammonia
The symbiotic relationship between legumes and rhizobia is an example of:
Mutualism
Parasitism
Commensalism
Amensalism
