`SO_2` gas is poisonous to

Options

A. animals
B. plants
C. Both (1) and (2)
D. Neither (1) nor (2)

Answer

To answer the question "SO₂ gas is poisonous to," we need to explore the effects of sulfur dioxide (SO₂) on both animals and plants. Here’s a step-by-step breakdown:

### Step 1: Identify the Affected Organisms
SO₂ gas is known to be harmful to both animals and plants.

### Step 2: Effects on Animals
- **Respiratory Disorders**: Low concentrations of SO₂ can lead to respiratory issues in humans and animals. This includes conditions such as:
- Asthma
- Bronchitis
- Emphysema
- **Eye Irritation**: Exposure to SO₂ can cause irritation in the eyes, leading to symptoms such as redness and discomfort.

### Step 3: Effects on Plants
- **Flower Bud Stiffness**: High concentrations of SO₂ can cause stiffness in flower buds.
- **Bud Drop**: Eventually, this can lead to the dropping of flower buds from the plants, affecting their reproductive success.

### Conclusion
In summary, SO₂ gas is poisonous to both animals and plants due to its harmful effects on respiratory health in animals and its detrimental impact on plant reproductive processes.

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