Which of the following is false?

Options

A. VAM is a blofertilizer
B. Azolla and BGA are the best blofertilizers
C. Synthetic fertilizers do not cause pollution
D. Probiotics are live microbial food supplement

Answer

To determine which statement is false among the given options, we can analyze each statement step by step:

1. **Statement 1: VAM is a biofertilizer.**
- VAM stands for Vesicular Arbuscular Mycorrhizae, which is indeed a type of biofertilizer. It helps in enhancing nutrient uptake in plants, particularly phosphorus.
- **Conclusion:** This statement is true.

2. **Statement 2: Azolla and BGA (Blue-Green Algae) are the best biofertilizers.**
- Azolla is a water fern that has symbiotic relationships with nitrogen-fixing cyanobacteria (BGA). Both are recognized as effective biofertilizers that improve soil fertility.
- **Conclusion:** This statement is also true.

3. **Statement 3: Synthetic biofertilizers do not cause pollution.**
- Synthetic fertilizers are chemically manufactured and can lead to various forms of pollution, including air, water, and soil pollution. They can deplete soil fertility over time and contribute to environmental degradation.
- **Conclusion:** This statement is false.

4. **Statement 4: Probiotics are live microbial food supplements.**
- Probiotics are indeed live microorganisms that provide health benefits when consumed, often found in fermented foods like yogurt.
- **Conclusion:** This statement is true.

**Final Answer:** The false statement is **Statement 3: Synthetic biofertilizers do not cause pollution.**