The plant on which Hugo de vries based his evolution theory is

Options

A. Antirrhinum majus
B. Lathyrus odoratus
C. Oenothera lamarckiana/Evening Primrose
D. Pisum sativum

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the plant on which Hugo de Vries based his evolution theory.

2. **Recall Hugo de Vries' Contribution**: Hugo de Vries proposed the mutation theory of evolution in 1901. This theory suggests that evolution occurs through sudden and large changes (mutations) rather than gradual changes.

3. **Review the Options**: The options given are:
- Antirhinum majus
- Lathyrus odoratus
- Oenothera lamarckiana (Evening Primrose)
- Pisum sativum (Garden Pea)

4. **Analyze Each Option**:
- **Antirhinum majus**: This plant is known for demonstrating incomplete dominance, not for mutation theory.
- **Lathyrus odoratus**: This plant is not significant in genetic studies related to evolution.
- **Oenothera lamarckiana**: This is the plant that Hugo de Vries conducted his experiments on, leading to his mutation theory.
- **Pisum sativum**: This plant is associated with Gregor Mendel and his principles of inheritance, not with de Vries.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is **Oenothera lamarckiana** (Evening Primrose).

6. **Conclusion**: The plant on which Hugo de Vries based his evolution theory is Oenothera lamarckiana.

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