The phloem translocates a variety of organic and inorganic solutes, mainly

Options

A. from the leaves to other parts of the plants.
B. roots to the leaves of the plants
C. roots to the aerial parts of the plants
D. roots to the phloem of the plants

Answer

### Step-by-Step Text Solution:

1. **Understanding Phloem Function**: The phloem is a type of vascular tissue in plants responsible for the transport of organic and inorganic solutes. Its primary role is to translocate food, particularly sugars, throughout the plant.

2. **Direction of Translocation**: The main direction of phloem translocation is from the source (where the food is produced) to the sink (where the food is utilized or stored). In most plants, the source is the leaves, where photosynthesis occurs, and the sink can be various parts of the plant, including roots and fruits.

3. **Identifying the Source and Sink**:
- **Source**: The leaves, which are the primary sites of photosynthesis, produce glucose.
- **Sink**: Non-photosynthetic organs such as roots, fruits, and other parts of the plant that require energy and nutrients.

4. **Translocation Process**: The process of translocation in the phloem is explained by the Mass Flow Hypothesis (or Pressure Flow Hypothesis). This theory describes how sugars produced in the leaves are converted into sucrose for transport, as sucrose is a non-reducing sugar and does not react with other substances during transport.

5. **Conclusion**: Based on the above understanding, the correct statement regarding the translocation of solutes in the phloem is that it primarily occurs from the leaves to other parts of the plant, particularly to the roots.

### Final Answer:
The phloem translocates a variety of organic and inorganic solutes mainly from the leaves to other parts of the plant.

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