Question

Match List I with List II :

List I                  List II
A. Trypsin              I. Intercellular ground substance
B. Morphine             II. Lectin
C. Concanavalin A       III. Enzyme
D. Collagen             IV. Alkaloid

Choose the correct answer from the options given below :

• A. A-III, B-IV, C-II, D-I
• B. A-III, B-II, C-IV, D-I
• C. A-I, B-II, C-III, D-IV
• D. A-IV, B-III, C-II, D-I

Hint:

The "Secondary Metabolites" table in NCERT is extremely high-yield. Memorize: Alkaloids = Morphine/Codeine; Lectins = Concanavalin A.

Answer 1

The Correct Option is A

Living organisms contain a wide variety of primary and secondary metabolites, each serving unique structural or functional roles.
• Trypsin (A): This is a protein-digesting enzyme (III) secreted by the pancreas.
• Morphine (B): This is a secondary metabolite classified as an alkaloid (IV), derived from the poppy plant.
• Concanavalin A (C): This is a well-known lectin (II), which is a type of protein that binds specifically to carbohydrates.
• Collagen (D): This is the most abundant protein in the animal world, serving as the intercellular ground substance (I) in connective tissues.