Which of the following features is/are common to both wind and water pollinated flowers I. Pollen grains are long and ribbon-like, II. Stigma is large and feathery, III. Flowers are not colourful, IV. Flowers do not produce nectar

Options

A. III and IV
B. II and III
C. I and II
D. II

Answer

To determine which features are common to both wind and water pollinated flowers, we will evaluate each of the given options step by step.

### Step 1: Analyze the Features

1. **Pollen grains are long and ribbon-like**:
- This feature is primarily associated with water pollinated flowers (hydrophyllous flowers). Long and ribbon-like pollen grains can easily move in water, but they would not be effective in wind as they would struggle against air resistance.
- **Conclusion**: This feature is **not common** to both.

2. **Stigma is large and feathery**:
- A large and feathery stigma is beneficial for wind pollination (anemophyllous flowers) as it can catch pollen grains carried by the wind. However, water pollinated flowers do not typically have large and feathery stigmas.
- **Conclusion**: This feature is **not common** to both.

3. **Flowers are not colorful**:
- Wind and water pollinated flowers do not need to be colorful because they do not rely on attracting pollinators like insects (which require colorful flowers). Hence, this feature is common to both types of flowers.
- **Conclusion**: This feature is **common** to both.

4. **Flowers do not produce nectar**:
- Similar to the previous point, both wind and water pollinated flowers do not produce nectar as they do not need to attract pollinators. Nectar is typically produced by flowers that rely on insect pollination (entomophilous flowers).
- **Conclusion**: This feature is **common** to both.

### Step 2: Identify the Common Features
From the analysis, we find that:
- Features 3 (flowers are not colorful) and 4 (flowers do not produce nectar) are common to both wind and water pollinated flowers.

### Final Answer
Thus, the correct answer is **Option A: 3 and 4**.

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