Q. No.Denitrification is carried by
(1) Pesudomonas
(2) Thiobacillus
(3) Nitrobacter
(4) Both A and B
(1) Pesudomonas
(2) Thiobacillus
(3) Nitrobacter
(4) Both A and B
Reduction of nitrogen to ammonia by living organisms is called as
(1) Electrical Nitrogen Fixation
(2) Biological Nitrogen Fixation
(3) Industrial Nitrogen Fixation
(4) Both B and C
Which of the following enzyme is exclusively in prokaryotes?
(1) Nitrogenase
(2) Pyruvate kinase
(3) Glucokinase
(4) Enolase
Nitrogenase converts
(1) Nitrate to Nitrite
(2) Nitrogen to Ammonia
(3) Nitrogen to Nitrite
(4) Nitrogen to Nitrate
Which of the following is a symbiotic nitrogen fixer?
1. Glomus
2. Azotobacter
3. Frankia
4. Azolla
Which of the following is free living nitrogen fixing cyanobacteria?
(1) Anabaena
(2) Azotobacter
(3) Beijernickia
(4) Rhodospirillum
Rhizobium
(1) Rod shaped
(2) Legume-bacteria relationship
(3) Has relationship with roots of several legumes such as alfalfa, sweet clover sweet pea, Lentils, garden Pea, broad bean and clover beans
(4) All of these
Rhizobium and Frankia
(1) Free living in soil
(2) Act as symbiont and fix nitrogen
(3) One is found on the roots of non-leguminous plants
(4) All of these
The central portion of nodule is pink in color due to
(1) Leg- haemoglobin
(2) Haemoglobin
(3) RBC
(4) Myoglobin
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