Milky latex occurs in

Options

A. Helianthus
B. Tagetes
C. Sonchus
D. All the above.

Answer

To determine where milky latex occurs, we will analyze the options provided and understand the characteristics of latex in plants.

### Step-by-Step Solution:

1. **Understanding Latex**:
- Latex is a complex emulsion that consists of various components such as proteins, alkaloids, starch, oils, tannins, resins, and gums. It is generally a milky fluid found in many flowering plants.

2. **Occurrence of Latex**:
- Latex is found in approximately 10% of all flowering plants (angiosperms). It is mostly produced in the Asteraceae family, also known as the sunflower family.

3. **Analyzing the Options**:
- **Option 1: Helianthus**:
- Helianthus is commonly known as sunflower and belongs to the Asteraceae family. Since it belongs to this family, it is likely to produce milky latex.
- **Option 2: Tagetes**:
- Tagetes is another genus that belongs to the Asteraceae family. Therefore, it also has the potential to produce milky latex.
- **Option 3: Bronchus**:
- This option seems to be a misnomer as "Bronchus" refers to a part of the respiratory system in animals and does not relate to plants. Hence, it does not produce latex.
- **Option 4: All the above**:
- Since Helianthus and Tagetes belong to the Asteraceae family and can produce milky latex, but Bronchus does not, this option is incorrect.

4. **Conclusion**:
- The correct answer is that milky latex occurs in Helianthus and Tagetes, but not in Bronchus. Therefore, the final answer is that milky latex occurs in Helianthus and Tagetes.

### Final Answer:
Milky latex occurs in Helianthus and Tagetes (not in Bronchus).

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