the phloem translocates a variety of

Options

A. organic solute
B. inorganic solutes
C. hormones
D. all of these

Answer

**Step-by-Step Text Solution:**

1. **Understanding Phloem Function**: The phloem is a type of vascular tissue in plants that is primarily responsible for the transport of nutrients, particularly organic compounds like sugars.

2. **Types of Substances Translocated by Phloem**:
- **Organic Solutes**: The primary organic solute transported by the phloem is sucrose, which is produced during photosynthesis.
- **Inorganic Solutes**: Phloem can also transport certain inorganic nutrients that are necessary for plant growth.
- **Hormones**: Various plant hormones, which regulate growth and development, are also transported through the phloem.

3. **Direction of Transport**: Unlike xylem, which transports water and minerals in a unidirectional manner (from roots to leaves), phloem transport is multidirectional. This means that it can move substances both up and down the plant, distributing nutrients where they are needed.

4. **Conclusion**: Since the phloem is involved in the transport of a variety of substances including organic solutes, inorganic solutes, and hormones, the correct answer to the question is that the phloem translocates "all of these".

5. **Final Answer**: The phloem translocates a variety of substances, including organic solutes, inorganic solutes, hormones, or all of these. Therefore, the correct answer is D: all of these.

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