Ornithophilous and anemophilous flowers are similar in absence of

Options

A. Odour
B. Nectar
C. Colour
D. Small flower

Answer

To solve the question regarding the similarity between ornithophilous and anemophilous flowers, we can follow these steps:

### Step 1: Define Ornithophilous Flowers
Ornithophilous flowers are those that are pollinated by birds. These flowers often have specific adaptations to attract birds, such as bright colors and sometimes nectar.

### Step 2: Define Anemophilous Flowers
Anemophilous flowers are those that are pollinated by wind. These flowers typically do not have bright colors or nectar, as they rely on the wind to carry their pollen to other flowers.

### Step 3: Identify the Similarity
Both ornithophilous and anemophilous flowers share a similarity in that they do not rely on fragrance (odor) to attract their pollinators.

### Step 4: Analyze the Options
- **Option A: Odor** - This is correct because both types of flowers do not require fragrance for pollination.
- **Option B: Nectar** - Incorrect, as nectar can be present in ornithophilous flowers to attract birds.
- **Option C: Color** - Incorrect, as ornithophilous flowers often have bright colors to attract birds, while anemophilous flowers are usually not colorful.
- **Option D: Small Flowers** - Incorrect, as the size of flowers can vary and is not a defining characteristic of either type.

### Step 5: Conclusion
The correct answer is that ornithophilous and anemophilous flowers are similar in the absence of odor.

### Final Answer
**The correct answer is: Odor (Option A)**

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