A national herbarium is that which cointains plants of

Options

A. a region
B. a country
C. a locality
D. world

Answer

### Step-by-Step Solution:

1. **Understanding the Concept of a Herbarium**:
- A herbarium is a collection of preserved plant specimens that are used for scientific study. These specimens are typically dried, pressed, and mounted on sheets.

2. **Definition of a National Herbarium**:
- A national herbarium is a specific type of herbarium that contains plant specimens collected from a wide geographical area, typically representing the flora of an entire country or even the world.

3. **Purpose of a National Herbarium**:
- The primary purpose of a national herbarium is to facilitate taxonomical studies, which involve the classification and identification of plant species.

4. **Information Included on Herbarium Sheets**:
- Each specimen in a herbarium is labeled with important information, including:
- The common name of the plant in English and local languages.
- The botanical name (scientific name) of the plant.
- The date of collection.
- The location where the specimen was collected.
- The name of the collector.
- The family to which the plant belongs.

5. **Example of a National Herbarium in India**:
- In India, the national herbarium is located at the Acharya Jagdish Chandra Bose Botanical Garden in Howrah, near Kolkata. It is also known as the Indian Botanic Garden and is the largest herbarium in India.

6. **Conclusion**:
- Therefore, a national herbarium contains plant specimens from around the world, serving as a vital resource for botanists and researchers.