Photosynthesis is influenced by both environmental and genetic factors genetic factors are all related with leaf do not include

Options

A. leaf age
B. leaf angle
C. leaf orientation
D. leaf shape

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Begin by defining photosynthesis as the process by which plants convert light energy into chemical energy, producing food (glucose) and oxygen from carbon dioxide and water.

2. **Identifying Influencing Factors**: Recognize that photosynthesis is influenced by both environmental factors (like light intensity, temperature, and carbon dioxide concentration) and genetic factors related to the leaf.

3. **Examining Genetic Factors**: Focus on the genetic factors that relate specifically to the leaf and how they affect photosynthesis. These include leaf age, leaf angle, leaf orientation, and leaf shape.

4. **Analyzing Each Factor**:
- **Leaf Age**: As leaves mature, they generally become more efficient at photosynthesis, indicating that leaf age positively influences the process.
- **Leaf Angle**: The angle at which leaves are positioned can affect how much light they receive, thus influencing photosynthesis.
- **Leaf Orientation**: Similar to leaf angle, the orientation of leaves can determine the amount of light exposure and consequently affect photosynthesis.
- **Leaf Shape**: Unlike the other factors, the shape of the leaf does not significantly influence the rate of photosynthesis. The shape is primarily an adaptation feature and does not affect the leaf's ability to perform photosynthesis.

5. **Conclusion**: Based on the analysis, the factor related to the leaf that does not influence photosynthesis is **leaf shape**.

**Final Answer**: Leaf shape does not influence photosynthesis.

---