Find the correct option (w.r.t. Bioherbicide)

Options

A. Cactoblastis cactorum
B. Helianthus annus
C. Phytophthora palmivora
D. More than one option is correct

Answer

### Step-by-Step Solution:

1. **Understanding Bioherbicides**:
- Bioherbicides are natural agents derived from living organisms such as fungi, bacteria, or plant residues that are used for controlling weed populations. They can be extracts or compounds that inhibit the growth of unwanted plants.

2. **Analyzing the Options**:
- **Option 1: Cactoblastis cactorum**:
- This organism, known as the cactus moth, is used to control pest populations and can act as a bioherbicide. Therefore, this option is correct.

- **Option 2: Helianthus annuus**:
- Commonly known as sunflower, it can release chemicals that inhibit the growth of surrounding plants through a process called allelopathy. This makes it a bioherbicide as well. Thus, this option is also correct.

- **Option 3: Phytophthora palmivora**:
- This is a fungal organism that acts as a mycoherbicide, meaning it can control weed populations by releasing chemicals that inhibit their growth. Hence, this option is correct too.

3. **Conclusion**:
- Since all three options (Cactoblastis cactorum, Helianthus annuus, and Phytophthora palmivora) are bioherbicides, the correct answer is "more than one option is correct."

### Final Answer:
- The correct option is: **More than one option is correct.**

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