Related Questions

Through nitrogen fixation process nitrogen in the atmosphere is converted into
A Ammonium
B Hydroxide
C Nitrate
D Chlorite
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
A CO
B SO2
C NOx
D CFC (chloro fluoro carbons)
The number of bacteria in a colony was growing exponentially . At 1 pm yesterday the number of bacteria was 1000 and at 3 pm yesterday it was 4000. How many bacteria were there in the colony at 6 pm yesterday ?
A 32,000
B 80,000
C 60,072
D 7,683
A certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population initially was 104, what was the number of bacteria in the population 1 hour later?
A 2(104)
B 6(104)
C (26) (104)
D (106)(104)
It takes 30 days to fill a laboratory dish with bacteria, If the size of the bacteria doubles each days, how long will it take for the bacteria to fill one-----half of the dish?
A 10 days
B 15 days
C 24 days
D 29 days
Which of the following crops helps in nitrogen fixation?
A Rice
B Wheat
C Beans
D Maize
Nitrogen Fixation is carried out primarily by
A Plants
B Humans
C Consumers
D Bacteria
Nitrogen fixation is a process of
A Assimilation of nitrate
B Utilisation of nitrogen gas
C Conversion of organic nitrogen to proteins
D Conversion of molecular nitrogen to ammonia
Heterocysts, specialised for nitrogen fixation, occur in certain
A Red brown algae
B Blue green algae
C Ferns
D Mosses
Nitrogen fixation process in the soil is done by
A Virus
B Bacteria
C Fungi
D Protoza

Next steps