Question

9. What enables leguminous plants to fix nitrogen?​

Answer 1

Rhizobium bacteria found in the root nodules of leguminous plants like pulses enables them to fix nitrogen. It lives in symbiotic association with plants and fixes the atmospheric nitrogen in leguminous plants.

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Answer 2

Answer:

Excellent question ! nitrogen is fairly inert , you have to really push it to combine like sparking it with oxygen - a process discovered by the great Henry Cavendish in the late 18th C. nitric acid is the end result :

N2 + 02 = 2 NO . NO + 0 = NO2 , N02 ( nitrogen dioxide , a brown poisonous gas, don't breathe it ! , or in a cold winter , a yellow liquid ) . with water give nitric acid ( HN03 ) .

leguminous plants do it with the aid of

microorganisms which are in the roots . they produce organic nitrogen compounds these are the ones animals etc . when they die ammonia ( NH3 ) is produced , their is oxidized into nitrites ( NO2 - ) by more bacteria & on to nitrates ( NO3 - ) the fundamental salts for plants..

induestially , if we produce N for our plants we start with ammonia ( produce by sparking H 2 & N2 ) and make various ammonia salts..........