P.Maheshwari popularized the use of these characters in plant taxonomy.

Options

A. Anatomical
B. embryological
C. in vitro tissue culture
D. morphological

Answer

**Step-by-Step Solution:**

1. **Identify the Subject**: The question refers to P. Maheshwari and his contributions to plant taxonomy.

2. **Understand P. Maheshwari's Contributions**: Panchanan Maheshwari was an Indian botanist known for his significant research in the field of embryology and cytogenesis.

3. **Focus on Key Techniques**: He developed techniques related to test tube fertilization, particularly in angiosperms (flowering plants). This technique allowed for the observation of the fertilization process outside of the natural environment.

4. **Link to Plant Taxonomy**: The use of embryological characteristics in plant taxonomy refers to the study of embryo development and the processes involved in fertilization. Maheshwari's work enabled the creation of new plant hybrids through controlled fertilization techniques.

5. **Select the Correct Option**: Given the context of the question and Maheshwari's contributions, the characteristics he popularized in plant taxonomy are embryological. Therefore, the correct answer is option B: embryological.

**Final Answer**: Panchanan Maheshwari popularized the use of embryological characteristics in plant taxonomy.

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