Which one of the following is not a correct statement?

Options

A. Herbarium houses dried, pressed and preserved plant specimens
B. Botanical gardens have collection of living plants for reference
C. A museum has collection of photographs of plants and animals
D. Key is a taxonomic aid for identification of specimens

Answer

To determine which statement is not correct, we will analyze each of the provided options one by one.

### Step-by-Step Solution:

1. **Option 1: "Herbarium houses dried, pressed, and preserved plant specimens."**
- This statement is correct. A herbarium is indeed a collection of plant specimens that have been dried, pressed, and preserved for scientific study.

2. **Option 2: "Botanical gardens have living specimens."**
- This statement is also correct. Botanical gardens are designed to cultivate and display living plants for education and research purposes.

3. **Option 3: "A museum has a collection of photographs of plant and animal."**
- This statement is **not correct**. Museums typically house collections of actual specimens (such as preserved animals, plants, fossils, etc.) rather than just photographs. While some museums may include photographs, the primary function of a museum is to display physical specimens.

4. **Option 4: "A key is a taxonomical aid for identification of a specimen."**
- This statement is correct. A taxonomical key is used to identify organisms based on their characteristics, often involving a series of choices that lead to the identification of a specimen.

### Conclusion:
The statement that is not correct is **Option 3: "A museum has a collection of photographs of plant and animal."**

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