Question

Assertion: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive. 

Reason: Secondary metabolites can be commercially produced by rising tissue culture technique.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is: (b)

Explanation:

Secondary metabolites are biosynthetically derived from primary metabolites but more limited in distribution in plant kingdom, being restricted to a particular taxonomic group. Secondary metabolites are accumulated by plants in smaller quantities as compared to primary metabolites. Also. they are synthesised in specialised cell types at distinct developmental stages, making their extraction and purification difficult and expensive. By the culture media using tissue culture techniques, secondary metabolites can be produced on a large scale.