Step 1: Understanding Pollination Types
- Protandry → Sunflower (IV) (Anthers mature before stigma).
- Protogyny → Datura (III) (Stigma matures before anthers).
- Herkogamy → Hibiscus (II) (Spatial separation prevents self-pollination).
- Self-sterility → Abutilon (I) (Prevents self-fertilization).