Ammonium sulphate is

If by radiation all nitrogenase enzyme are inactivated, then there will be no

In root nodules of legumes, leg-haemoglobin is important because it

Select the matched ones:

a. Nitrosomonas - Nitrite to nitrate

b. Thiobacillus - Denitrification

c. Nostoc - Free-living nitrogen-fixer

d. Azotobacter - Anaerobic nitrogen-fixer

A nutritionally wild type organism, which does not require any additional growth supplement is known as:

Match the followings an choose the correct combination from the options given:

Assertion: Deficiency of sulphur causes chlorosis in plants.

Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acids.

Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?

Which one of the following elements in plants is not remobilized?

The minerals involved in water-splitting reaction during photosynthesis are