Concept: This question tests your knowledge of floral morphology, specifically the arrangement of stamens in the androecium, focusing on the condition known as polyadelphous.

Why (C) is correct: In citrus, the stamens are united into more than two bundles, a condition called polyadelphous. Each bundle contains several stamens, and these bundles are separate from each other. This is a characteristic feature of the citrus family (Rutaceae).

Why other options are wrong:

• (A) pea: Pea (Pisum sativum) exhibits diadelphous stamens, where stamens are united into two bundles (9+1 arrangement).
• (B) china rose: China rose (Hibiscus rosa-sinensis) shows monoadelphous stamens, where all stamens are united into a single bundle forming a staminal tube.
• (D) All of these: Since pea and china rose do not show polyadelphous condition, this option is incorrect.

NEET Tip: Remember the 'MDC' mnemonic for stamen fusion types: Monoadelphous (China rose), Diadelphous (Pea), Polyadelphous (Citrus). (Note: 'P' for Polyadelphous, not 'C' for Citrus in the mnemonic itself, but Citrus is the example).

Correct Answer: (C)