Which type of secondary metabolite is concanavalin A?

Pigment

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Alkaloid

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Drug

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Lectin

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Solution

The correct option is D Lectin
Matabolites are the intermediates and products of metabolism. Primary metabolites are substances produced by the organism as a part of its normal growth. Eg., Amino acids, proteins, enzymes. They have identifiable functions and play known roles in physiological processes.
Secondary metabolites are substances produced usually after the main growth phase of the organism. The function of few of these compounds are not known, however many of them are useful to humans. Eg., rubbers, drugs, spices, scents and pigments.
Concanavalin A (Con A) is a plant lectin that is purified from jack beans. It is used to purify glycosylated macromolecules in lectin affinity chromatography, as well as to study immune regulation by various immune cells.

Some secondary metabolites.

$\begin{matrix} P i g m e n t s & C a r o t e n o i d s, A n t h o c y a n i n s, e t c . A l k a l o i d s & M o r p h i n e, C o d e i n e, e t c ., T e r p e n o i d e s & M o n o t e r p e n e s, D i t e r p e n e s, e t c ., E s s e n t i a l o i l s & L e m o n g r a s s o i l, e t c . T o x i n s & A b r i n, R i c i n L e c t i n s & C o n c a n a v a l i n A D r u g s & V i n b l a s t i n, c u r c u m i n, e t c . P o l y m e r i c s u b s t a n c e s & R u b b e r, g u m s, c e l l u l o s e \end{matrix}$

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