Little leaf disease and plant yellow are caused by

Options

A. Halobacterium
B. Mycoplasma
C. Bdellovibrios
D. Chlamydia.

Answer

**Step-by-Step Solution:**

1. **Identify the Diseases**: The question mentions two diseases: little leaf disease and plant yellow disease.

2. **Understand Little Leaf Disease**: Little leaf disease primarily affects brinjal plants. The symptoms include a reduction in leaf size and a rosette-like appearance.

3. **Transmission**: It is important to note how little leaf disease is transmitted. In this case, it is transmitted by leaf hoppers.

4. **Causative Agent**: The next step is to identify the causative agent of little leaf disease. According to the information, little leaf disease is caused by mycoplasma.

5. **Plant Yellow Disease**: The question also mentions plant yellow disease. It is noted that mycoplasma is also responsible for causing this disease.

6. **Conclusion**: Based on the information gathered, both little leaf disease and plant yellow disease are caused by mycoplasma.

7. **Final Answer**: Therefore, the correct answer to the question is mycoplasma.

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