There is no chemical control so far achieved in the field for_________.
In the nitrogen cycle, the bacteria in root nodules of leguminous plants can convert atmospheric nitrogen into nitrate. These bacteria are called_________.
Nitrogen –fixing bacteria
Bacteria and cynobacteria are the member of the kingdom________.
Which of the following are the characteristics of a virus?
Viruses are reproduce only_________.
At certain temperatures
Inside a living cell
In dry conditions
Prokaryotes are usually single celled and comprise the________.
This is non -living cells and non-living bio-chemical.
The bacteria which oxidize reduced inorganic sulphur compounds converted to sulphate in soil.
The bacteria which oxidized ammonium to nitrite in soil________.
The bacteria which oxidized nitrite to nitrate in soil__________.
True fungi are composed of filaments and masses of cells which makeup the body of the organisms, known as_______.
Aspirgillus is important genera of_______.
The dinitrogen (N2) fixation is performed by the enzymes_________.
It is found to formed nodules both in roots and stems and is most important host plant for the symbiotic N 2 fixation..
The anaerobic bacterium which was found responsible for an increase of the nitrogen content in soil.
Purity of colour denoted by___________.
“The limiting velocity of a particle falling in fluid medium will be proportional to the square of its diameter.” This low is given by:___________.
This enzyme is involved in the BNF.
“Enrichment of water bodies by nutrients and consequent bloom of algal and other aquatic plants” This is the process known as:_________.
A branch of soil science which deals with the soil from the crop production point of view_________.
In montmorillonite, most of the negative charges are developed by__________.
Dissociation of OH group
Particle density is also known as:_________.
Total porosity is more in________.
The dominant potential in saline soil is___________.
The phenomenon by which hydrogen atoms act as links between water molecules is called as___________.
Number of score out of 25 =
Score in percentage =
QuiZ:  1  2  3  4  5  6
Note: Having difficulties in attempting quiz or any misleading answer? please email us or comment below with indicating Test name, Thank You. Good Luck