Question

Match List - I with List - II.

Choose the correct answer from the options given below:

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

Hint:

Isabgol is the natural "budget" version of Agar. Nitrate is "Macro" (Big needs), Iodide is "Micro" (Tiny needs).

Answer 1

The Correct Option is B

Concept: Plant culture media consist of inorganic salts (macro and micro), carbon sources, vitamins, and solidifying agents.

Step 1: Inorganic Nutrients.
Potassium nitrate ($KNO_3$) (A) provides Nitrogen and Potassium, both of which are needed in large quantities. Therefore, it is a macronutrient (IV). Potassium iodide (KI) (B) provides iodine, which is needed in trace amounts, making it a micronutrient (I).

Step 2: Organic Additives and Support.
Thiamine ($B_1$) (C) is an essential vitamin (III) required by almost all plant cultures for carbohydrate metabolism. Isabgol (D), derived from Plantago ovata husks, is a plant-based mucilage used as an alternative gelling agent (II) to agar for solidifying the medium.

Step 3: Final Matching.
The correct associations result in the sequence A-IV, B-I, C-III, D-II.