The Linnaean system of classification uses which one among the following as the basis of organism classification?

Options

A. Leaf anatomy
B. Flower colour
C. Sexual organs
D. Stem and root structure

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the basis of classification used in the Linnaean system.

2. **Identifying the Options**: The options provided are:
- Leaf anatomy
- Flower color
- Sexual organs
- Stem and root structure

3. **Recalling the Linnaean System**: The Linnaean system of classification, developed by Carl Linnaeus, is known for its hierarchical structure and naming conventions. It primarily categorizes organisms based on specific characteristics.

4. **Analyzing the Characteristics**:
- Leaf anatomy refers to the structure and form of leaves.
- Flower color pertains to the pigmentation of flowers.
- Sexual organs, particularly the structure of androsium (the male reproductive part of flowers), are crucial in plant classification.
- Stem and root structure involves the physical characteristics of the plant's stem and root systems.

5. **Determining the Correct Basis**: The Linnaean system is known to classify organisms based on their sexual characteristics, especially the reproductive organs. This is a key feature that distinguishes closely related species.

6. **Conclusion**: Therefore, the correct answer is "Sexual organs".

**Final Answer**: The Linnaean system of classification uses sexual organs as the basis for organism classification.

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