Question

Find the incorrect pairs from the following :-
options--
O Atmospheric N, - NH; = Nitrogen fixation
NH; - NO-3 = Nitrification
NO ;-N= Ammonification
Heterocyst = Blue green algae​

Answer 1

Answer:

Find the incorrect pairs from the following :-

options--

O Atmospheric N, - NH; = Nitrogen fixation

NH; - NO-3 = Nitrification

NO ;-N= Ammonification

Heterocyst = Blue green algae

Answer 2

Your question was incomplete. Below you will find the missing options.

a) Atmospheric N2 – NH3 = Nitrogen fixation

b) NH3 – NO3 = Nitrification

c) NO2 – N2 = Ammonification

d) Heterocyst = blue green algae

ANSWER:

Option C is the correct answer.

EXPLANATION:

• Plants cannot utilize atmospheric nitrogen directly and therefore; the atmospheric or molecular form of nitrogen has to be converted into simpler absorbable forms for absorption. This process is known as Nitrogen Fixation.

• When ammonium compounds or salts (NH3) are converted into nitrates and nitrites (NO3 and NO2 respectively) – it is known as Nitrification.

• When organic nitrogen is converted into ammonia – it is called as Ammonification.

• When nitrates and nitrites are converted into molecular nitrogen forms, it is known as Denitrification.

Hence, option c is incorrect because, it depicts denitrification and not ammonification.

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