Botanical gardens have

Options

A. Dried and preserved plant specimens
B. Plants grown for identification purposes
C. Plants grown in their original and natural habitats
D. Each plant with a label showing all its characters

Answer

**Step-by-Step Solution:**

1. **Understanding Botanical Gardens**:
- Botanical gardens are specialized gardens that contain a collection of living plants. They are designed to showcase the diversity of plant life and illustrate the relationships between different plant groups.

2. **Purpose of Botanical Gardens**:
- The primary purpose of botanical gardens is plant conservation. They serve as a means to conserve various plant species, especially those that may be endangered or threatened in their natural habitats.

3. **Ex Situ Conservation**:
- Botanical gardens are an example of ex situ conservation, which means that the plants are conserved outside of their natural habitats. This allows for the protection and study of plants that might not survive in the wild due to environmental changes or human activities.

4. **Labeling of Plants**:
- Each plant in a botanical garden is typically labeled with information such as its name, species, genus, and other characteristic features. This labeling helps visitors and researchers understand the plants better and their relationships to one another.

5. **Evaluating the Options**:
- Option A: "Dried and preserved plant specimens" - This refers to herbarium specimens, not botanical gardens.
- Option B: "Plant grown for identification purposes" - While this is somewhat true, it is not the primary function of botanical gardens.
- Option C: "Plant grown in their original and natural habitat" - This is incorrect as botanical gardens represent ex situ conservation.
- Option D: "Each plant with a label showing all its characteristics" - This is correct as it reflects the labeling practice in botanical gardens.

6. **Conclusion**:
- The correct answer is Option D, as it accurately describes a key feature of botanical gardens.