In which of the following forms is iron absorbed by plants?
(3) Ferric
As per NCERT, iron is obtained by plants in the form of ferric ions ( Fe3+). It is required in larger amounts than other micronutrients and is an important constituent of proteins involved in electron transfer, like ferredoxin and cytochromes.
Answer: (3)
In which of the following all three are macronutrients?
The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction?
During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by
Minerals known to be required in large amounts for plant growth include
Deficiency symptoms of nitrogen and potassium are visible first in
The first stable product of fixation of atmospheric nitrogen in leguminous plants is
Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere ?
Which of the following elements is a constituent of biotin?
Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere?