Which taxonomical aid uses living plant forms for studies?

Answer

**Step-by-Step Solution:**

1. **Understanding Taxonomical Aids**: Taxonomical aids are tools or methods used to identify and classify organisms. They help in the study of the diversity of living organisms.

2. **Identifying the Type of Aid**: The question specifically asks for a taxonomical aid that utilizes living plant forms for studies.

3. **Recognizing Botanical Gardens**: Among various taxonomical aids, botanical gardens are specialized areas where living plants are cultivated and maintained for research, education, and conservation purposes.

4. **Function of Botanical Gardens**: In botanical gardens, living plants are grown and labeled with their scientific names, family classifications, and other relevant information. This helps in the identification and classification of plant species.

5. **Conclusion**: Therefore, the taxonomical aid that uses living plant forms for studies is known as **botanical gardens**.

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