Concept: This question tests your knowledge of plant classification, specifically identifying a representative family of monocotyledonous plants.

Why (A) is correct: Liliaceae is a well-known and characteristic family of monocotyledonous plants. Monocots are distinguished by having a single cotyledon in their embryo, parallel venation in leaves, and fibrous root systems, among other features. Examples include lily, onion, and garlic.

Why other options are wrong:

(B) Solanaceae: This is a family of dicotyledonous plants (e.g., potato, tomato, brinjal).

(C) Fabaceae: This is a family of dicotyledonous plants (e.g., peas, beans, lentils).

(D) Brassicaceae: This is a family of dicotyledonous plants (e.g., mustard, cabbage, radish).

Common Mistake: Students sometimes confuse the characteristics of monocots and dicots, leading to misidentification of their representative families.

NEET Tip / Mnemonic: Remember that monocots often have flower parts in multiples of three, while dicots often have flower parts in multiples of four or five. Think of 'Liliaceae' as 'Lily-like' plants, which are typically monocots.

Correct Answer: (A)