Concept:
Natural cellulosic fibers are broadly categorized based on their botanical source within the plant structure. These categories include bast (extracted from the stem), leaf fibers, seed hair fibers, and fruit fibers.
Step 1: Analyzing individual fiber sources:
• Flax (A): This is a bast fiber, meaning it is extracted specifically from the Stem (II) of the plant.
• Banana (B): These fibers are obtained primarily from the Leaf (I) or the leaf sheaths of the pseudostem.
• Kapok (C): This is a Seed hair (IV) fiber found in the seed pods of the Ceiba tree, used largely for buoyancy and insulation.
• Coir (D): This fiber is extracted from the fibrous husk or mesocarp of the coconut Fruit (III).
Step 2: Matching the sequence:
Following the analysis, the correct pairs are A-II, B-I, C-IV, and D-III, which corresponds to option (1).