In a flowering plant the substance that is not transported is

Options

A. water and mineral nutrients
B. organic nutrients
C. plant growth regulators
D. oxygen In a flowering plant

Answer

To solve the question, "In a flowering plant, the substance that is not transported is," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which substance is not transported within a flowering plant.

2. **Evaluate the Options**:
- **Option 1: Water and Minerals**: Water is transported through the xylem from roots to stems (unidirectional), and minerals are transported in a multidirectional manner. Thus, both are transported.
- **Option 2: Organic Nutrients**: Organic nutrients are transported through the phloem in a multidirectional manner. Therefore, this option is also transported.
- **Option 3: Plant Hormones**: Plant hormones (growth regulators) are indeed transported, albeit in small quantities. Hence, this option is also transported.
- **Option 4: Oxygen**: Oxygen is primarily taken up by leaves from the environment for respiration and is produced during photosynthesis. It is not transported within the plant in the same way as the other substances.

3. **Conclusion**: Based on the evaluation of the options, the substance that is not transported in a flowering plant is **Oxygen** (Option 4).

### Final Answer:
The substance that is not transported in a flowering plant is **Oxygen**.

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