Concept: This question tests your understanding of floral morphology, specifically the presence of a perianth, which is a collective term for the non-reproductive parts of a flower when sepals and petals are not distinct.

Why (A) Lily is correct: In a lily flower, the sepals and petals are morphologically similar and are not differentiated. They are collectively called tepals, and the entire whorl of tepals forms the perianth. Lilies are monocots, and this is a common feature in many monocot families like Liliaceae.

Why other options are wrong:

• (B) China rose: China rose (Hibiscus rosa-sinensis) has distinct sepals (calyx) and petals (corolla), so it does not have a perianth.
• (C) Rose: Rose (Rosa spp.) also has clearly differentiated sepals and petals.
• (D) Pea: Pea (Pisum sativum) flowers have distinct sepals and petals, characteristic of papilionaceous flowers.

Common Mistake: Students often confuse flowers with distinct sepals and petals with those where these structures are fused or undifferentiated. Remember that 'perianth' specifically refers to the latter case.

NEET Tip / Mnemonic: Think of 'L' for Lily and 'L' for Lack of differentiation between sepals and petals, leading to a perianth.

Correct Answer: (A)