Which one is a biofertilizer (A) VAM (B) CMU (C) DCMU (D) Agent lemon

Options

A. VAM
B. CMU
C. DCMU
D. Agent lemon

Answer

To solve the question "Which one is a biofertilizer?" we will analyze each of the options provided.

### Step-by-Step Solution:

1. **Understand the Options:**
- **Option A: VAM** - This stands for Vesicular Arbuscular Mycorrhizae. It is a type of symbiotic association between fungi and the roots of angiosperms (flowering plants). VAM is known to enhance nutrient uptake, improve soil structure, and increase the availability of essential nutrients to plants. Therefore, it is classified as a biofertilizer.

- **Option B: CMU** - This stands for chlorophenyl dimethylurea. It is a chemical compound that functions as a herbicide. Its primary role is to inhibit the process of photosynthesis in plants, which means it is not a biofertilizer.

- **Option C: DCMU** - This stands for dichlorophenyl dimethyl urea. Similar to CMU, DCMU is also a herbicide and works by inhibiting photosynthesis. Thus, it is not a biofertilizer either.

- **Option D: Agent Lemon** - This is a term that refers to a pesticide used in agriculture. Since it is used to control pests and not to enhance soil fertility or plant growth, it cannot be considered a biofertilizer.

2. **Conclusion:**
After analyzing all the options, we find that the only option that qualifies as a biofertilizer is **Option A: VAM (Vesicular Arbuscular Mycorrhizae)**.

### Final Answer:
The correct answer is **(A) VAM**.

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