Ornithophilous flowers possess

Options

A. Landing platform
B. Red or yellow colour
C. Refreshing fragrance
D. Both B and C.

Answer

**Step-by-Step Solution:**

1. **Understanding Ornithophilous Flowers**:
- Ornithophilous flowers are specifically adapted for pollination by birds. This means they have certain characteristics that attract birds.

2. **Identifying Key Characteristics**:
- These flowers typically possess bright colors, particularly red or yellow, which are visually appealing to birds.
- They often have a structure that allows birds to easily access the nectar, which can include a landing platform.

3. **Analyzing the Options**:
- **Option A**: Landing platform - While some flowers may have a landing platform, this is not a defining characteristic of ornithophilous flowers.
- **Option B**: Red or yellow color - This is a key characteristic of ornithophilous flowers, as these colors attract birds.
- **Option C**: Refreshing fragrance - This is not a consistent feature of ornithophilous flowers; they may or may not have fragrance.

4. **Conclusion**:
- The most accurate answer is that ornithophilous flowers possess red or yellow color, which is essential for attracting bird pollinators.

5. **Final Answer**:
- Therefore, the correct answer is **Option B**: red or yellow color.

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