………..is the key element in amino acids.
a) Sulphur
) Phosphorus
c) Nitrogen
d) Calcium
The chemical properties of amino acids determine the properties of ……..
a) proteins
b) carbohydrate
c) lipids
d) nucleic acids
Plant requires…….. to prepare chlorophyll.
a) Sodium
b) Calcium
c) Phosphorus
d) Magnesium
Importance of Fertilizers:
Some nutrients are deficient in soil which is need by plant for
optimum growth are called…
a) minerals
b) nutrients
c) fertilizers
d) none of these
Fertilizers are broadly classified into…………. Groups.
a) two
b) three
c) four
d) five
