Select the correct statement.
Legumes are incapable of fixing nitrogen
Legumes fix nitrogen through bacteria living in fruits
Legumes fix nitrogen only by bacteria present in root nodules
None of the above
Related Questions
The product of reaction catalyzed by nitrogenase in root nodules of leguminous plants
Ammonia alone
Nitrate alone
Ammonia and oxygen
Ammonia and hydrogen
Which one of the following is an amide involved in nitrogen assimilitaion by plants?
Glutamate
Alanine
Asparagine
Serine
The symbiotic relationship between legumes and rhizobia is an example of:
Mutualism
Parasitism
Commensalism
Amensalism
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
Which one of the following is an amide involved in nitrogen assimilitaion by plants?
Glutamate
Alanine
Asparagine
Serine
Which of these is NOT a characteristic feature of the root nodules formed during legume-rhizobia symbiosis?
Presence of chloroplasts in bacteroids
Presence of leghemoglobin
Differentiated bacteroids
Reduced oxygen concentration
For nitrogen fixation, useful pigment is
Nitrogenase
Haemoglobin
Myoglobin
Leghaemglobin
Root nodules in Alnus is formed by.
Rhizobium
Azospirillum
Frankia
Clostridium
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
Root nodules are primarily found in which part of the plant?
Stems
Leaves
Flowers
Roots
