In which disease, gums comes out from plants :

Options

A. Dieback
B. Necrosis
C. Internal cork of apple
D. Exantherma

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the disease in which gums come out from plants.

2. **Analyze the Options**: The options provided are:
- Dieback disease
- Necrosis
- Internal cork of apple
- Exanthema

3. **Evaluate Each Option**:
- **Dieback Disease**: This disease is characterized by the progressive death of twigs, branches, shoots, and roots in woody plants. It is caused by a deficiency of copper. However, it does not lead to gum production, so this option is incorrect.

- **Necrosis**: This refers to the death of plant tissue, particularly leaf tissue, and is caused by deficiencies in calcium, magnesium, copper, and potassium. It does not involve gum production, making this option incorrect as well.

- **Internal Cork of Apple**: This condition arises due to boron deficiency, leading to cork formation in apples. It does not involve gum production, so this option is also incorrect.

- **Exanthema**: This disease occurs due to a deficiency of copper in fruit trees. It is characterized by the trees yielding gums on the bark, indicating that this option is correct.

4. **Conclusion**: The disease in which gums come out from plants is **Exanthema**.

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