Biological Nitrogen Fixation
Trending Questions
Match the column I and column II.
Column IColumn IIA. Nitrobacter1. Free−living aerobic N2 fixerB. Clostridium2. Converts ammonia into nitriteC. Nitrosococcus3. Changes nitrite to nitrateD. Azotobacter4. Free−living anaerobic N2 fixer
Codes
ABCD2431ABCD3421
ABCD4213
ABCD1234
- Nitrates
- Glutamate
- Ureides
- Ammonia
- Roots
- Stem
- Branches
- Leaves
- Azotobacter
- Anabaena
- Nostoc
- Rhizobium
Identify the correct option related to the given figure regarding root nodule formation in legumes.
- A - Inner cortical and pericycle cells under division B - Infection thread containing bacteria
- A - Infection thread containing bacteria B - Inner cortical and pericycle cells under division
- A - Mesophyll cells B - Infection thread containing bacteria
- A - Root hair B - Mature nodule
Assertion (A): Higher plants can not utilize nitrogen that is present in the form of N2 in air.
Reason (R): In higher plants, the nitrogenase enzyme is absent.
Both A & R are true and R explains A
Both A & R are true and R does not explain A
A is true and R is False
Both A & R false
The enzyme nitrogenase is a
Fe-Protein
Mo-Protein
Mo-Fe Protein
Pure Protein
- Nitrate reductase
- Nitrite reductase
- Amino synthetase
- Nitrogenase
- Salmonella
- Lichen
- Azotobacter
- Anabaena
- Nostoc
- Rhizobium
- Frankia
- Thiobacillus
Match the column I and column II.
Column IColumn IIA. Nitrobacter1. Free−living aerobic N2 fixerB. Clostridium2. Converts ammonia into nitriteC. Nitrosococcus3. Changes nitrite to nitrateD. Azotobacter4. Free−living anaerobic N2 fixer
Codes
ABCD2431ABCD3421
ABCD4213
ABCD1234