Sexual system of classification by Linnaeus is based on:

Options

A. Gynoecium structure
B. Androecium structure
C. Number and structure of stamen
D. More than one option is correct

Answer

To answer the question regarding the sexual system of classification by Linnaeus, we will break down the information step by step.

### Step-by-Step Solution:

1. **Understanding the Sexual System of Classification**:
- The sexual system of classification was developed by Carl Linnaeus and is an artificial system that classifies plants based on specific morphological characteristics.

**Hint**: Remember that Linnaeus's classification is artificial and focuses on observable traits.

2. **Focus on Sexual Characters**:
- Linnaeus emphasized the sexual characters of plants, which are primarily related to the reproductive structures of flowers, namely the Androsium and Gynosium.

**Hint**: Androsium refers to the male part (stamens), while Gynosium refers to the female part (carpels).

3. **Components of Androsium and Gynosium**:
- The Androsium consists of stamens, and the Gynosium consists of carpels. The classification is based on the number and structure of these reproductive parts.

**Hint**: Think about how the number of stamens can vary among different plant species.

4. **Classes of Plants**:
- Linnaeus categorized plants into 24 classes based on the number of stamens. For example, Monoandria (one stamen) and Diandria (two stamens) are some of the classes he defined.

**Hint**: The classification system is hierarchical and based on the reproductive structures.

5. **Conclusion on the Options**:
- Given that Linnaeus's classification considers both the structure of the Androsium and Gynosium, as well as the number and structure of stamens, we can conclude that more than one option is correct.

**Hint**: Look for options that mention both Androsium and Gynosium, as well as the number of stamens.

### Final Answer:
The sexual system of classification by Linnaeus is based on:
- Gynosium structure
- Androsium structure
- Number and structure of stamen
- Therefore, the correct answer is: **More than one option is correct.**