Hugo de Vries studied mutations in

Options

A. Eucalyptus
B. Evening primrose
C. Hibiscus
D. Vallisneria

Answer

**Step-by-Step Solution:**

1. **Identify the Scientist and His Contribution:**
- The question asks about Hugo de Vries and his study of mutations. He is known for his work on the theory of mutations, which suggests that new species can arise from existing species through sudden and significant changes.

2. **List the Options Provided:**
- The options given in the question are:
a) Eucalyptus
b) Evening Primrose
c) Hibiscus
d) Valisneria

3. **Determine the Plant Studied by Hugo de Vries:**
- Hugo de Vries conducted his experiments on a specific plant known as Oenothera lamarckiana, which is commonly referred to as the evening primrose.

4. **Eliminate Incorrect Options:**
- Eucalyptus, hibiscus, and valisneria are not the plants that Hugo de Vries studied in relation to mutations. Therefore, they can be eliminated.

5. **Conclude with the Correct Answer:**
- The correct answer to the question is the evening primrose (Oenothera lamarckiana), which is option b.

**Final Answer:**
- The correct answer is **evening primrose (Oenothera lamarckiana)**.

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