Promiment symptoms of manganese toxicity is:

Options

A. Intervenial chlorosis
B. Brown spots surrounded by chlorotic venis
C. Heart rot
D. Water core

Answer

### Step-by-Step Solution:

1. **Understanding Manganese Toxicity**: Manganese is an essential micronutrient for plants, but when present in excess, it can lead to toxicity. This toxicity can disrupt various physiological processes in plants.

2. **Symptoms of Manganese Toxicity**: One of the primary symptoms of manganese toxicity is the reduction of chlorophyll production. Chlorophyll is crucial for photosynthesis and gives leaves their green color.

3. **Chlorosis**: Due to the reduction in chlorophyll, the leaves begin to lose their green color and may appear pale or yellow. This condition is known as chlorosis.

4. **Calcium Translocation Issues**: Manganese toxicity also affects the translocation of calcium within the plant. Specifically, it inhibits the movement of calcium to the shoot apex, which can lead to further physiological issues.

5. **Visual Symptoms**: In addition to chlorosis, another visual symptom of manganese toxicity is the appearance of brown spots on the veins of the leaves. These spots are indicative of the damage caused by excess manganese.

6. **Conclusion**: Based on the symptoms described, the prominent symptom of manganese toxicity can be summarized as "Brown Spots Surrounding Chlorotic Veins."

### Final Answer:
The prominent symptoms of manganese toxicity is: **Brown Spots Surrounding Chlorotic Veins.**

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