Which of the following are not secondary metabolites in plants ?

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Morphine,codeine

Vinblastin,curcumin

Amino acids,glucose

Rubber,gums

answer is C.

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Detailed Solution

Amino acids and glucose are primary metabolites. Amino acids are the building blocks of proteins. Glucose is the major source of energy in living cells. It is also the building block of polysaccharides, like glycogen, starch and cellulose.
(1) Rubber and gums are polymeric substances. They are classifi ed as secondary metabolites.
(2) Codeine and morphine are alkaloids which are also classifed as secondary metabolites.
(4) Vinblastine and curcumin are classes of drugs which are also secondary metabolites. Vinblastine is an alkaloid used to treat certain types of cancers. Curcumin is phenolic pigment used as a food ingredient.

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