Select the odd out w.r.t. Botanical gardens

Answer

### Step-by-Step Solution:

1. **Understanding Botanical Gardens**:
- Botanical gardens are man-made ecosystems dedicated to the collection, cultivation, and preservation of a wide variety of plants. They are labeled with their botanical names for reference and study.

2. **Analyzing the Options**:
- **Option A**: "Collection of living plants for reference" - This is a correct statement as botanical gardens indeed collect living plants for research and educational purposes.
- **Option B**: "Indian botanical garden is at Howrah" - This is also correct. The Indian Botanical Garden, now known as Acharya Jagdish Chandra Bose Indian Botanic Garden, is located in Howrah, near Kolkata.
- **Option C**: "Collection of preserved plants and animal specimens" - This statement is incorrect. Botanical gardens focus on plants, and while they may be associated with herbaria (which preserve plant specimens), they do not collect animal specimens.

3. **Identifying the Odd One Out**:
- Since options A and B are correct statements related to botanical gardens, and option C is incorrect because it includes animal specimens, option C is the odd one out.

4. **Conclusion**:
- The correct answer is **Option C: Collection of preserved plants and animal specimens**.