Match Column - I with Column - II and choose the correct answer.

To match the floral formulas in Column - I with their respective plant families in Column - II, we can analyze the structural symbols and numbers in each formula:

1. Formula (a):

$\%\; ⚥\; K$₍₅₎ C_{1 + 2 + (2)} A_{(9) + 1} G₁

• The symbol $\%$ indicates a zygomorphic (bilaterally symmetrical) flower.
• The symbol $⚥$ indicates a bisexual flower.
• $K$₍₅₎ represents 5 fused sepals (gamosepalous).
• $C$_{1 + 2 + (2)} represents a papilionaceous corolla (vexillary aestivation) with 1 standard, 2 wings, and 2 fused keels.
• $A$_{(9) + 1} represents diadelphous stamens (9 fused together in a bundle and 1 free).
• $$G₁ represents a monocarpellary gynoecium with a superior ovary.
This floral formula is highly characteristic of the family Fabaceae.
Therefore, (a) matches with (iii).

2. Formula (b):

$\oplus \; ⚥\; K$₍₅₎ C₍₅₎ A₅ G₍₂₎

• The symbol $\oplus$ indicates an actinomorphic (radially symmetrical) flower.
• $K$₍₅₎ represents 5 fused sepals.
• $C$₍₅₎ represents 5 fused petals.
• The connection line over the corolla and androecium represents epipetalous stamens (stamens attached to the petals).
• $$G₍₂₎ represents a bicarpellary, syncarpous gynoecium with a superior ovary.
This floral formula is characteristic of the family Solanaceae.
Therefore, (b) matches with (iv).

3. Formula (c):

$\oplus \; ⚥\; P$_{(3 + 3)} A_{3 + 3} G₍₃₎

• The symbol $P$_{(3 + 3)} represents a perianth composed of 6 tepals arranged in two whorls of 3, fused together (gamophyllous).
• The connection line over the perianth and androecium indicates epiphyllous stamens (stamens attached to the tepals).
• $$G₍₃₎ represents a tricarpellary, syncarpous gynoecium with a superior ovary.
This floral formula is characteristic of the family Liliaceae.
Therefore, (c) matches with (ii).

4. Formula (d):

$\oplus \; ⚥\; K$_{2 + 2} C₄ A_{2 + 4} G₍₂₎

• $K$_{2 + 2} represents 4 sepals arranged in two whorls of 2.
• $C$₄ represents 4 free cruciform petals (cross-like arrangement).
• $A$_{2 + 4} represents tetradynamous stamens (2 outer shorter stamens and 4 inner longer stamens).
• $$G₍₂₎ represents a bicarpellary, syncarpous gynoecium with a superior ovary.
This floral formula is characteristic of the mustard family, Brassicaceae.
Therefore, (d) matches with (i).

Conclusion:
Matching the columns gives us the correct sequence:
a - (iii), b - (iv), c - (ii), d - (i)