Which one of the following is not a tree?

Options

A. Banyan tree
B. Khejri
C. Desert Oak
D. Banana

Answer

To determine which of the following options is not a tree, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The question presents four options, among which we need to identify which one is not a tree. The options include the banyan tree, khichdi tree, desert oak, and banana.

2. **Analyze the Banyan Tree**: The banyan tree is a well-known tree characterized by its aerial roots that grow downwards and can form new trunks. It is indeed classified as a tree.

3. **Analyze the Khichdi Tree**: The khichdi tree is also a type of tree that is adapted to arid conditions, particularly found in Rajasthan. It is known for its ability to store water and provide shade. Thus, it is classified as a tree.

4. **Analyze the Desert Oak**: The desert oak is a tree species found in Australia. It has deep roots that allow it to store water efficiently. Therefore, it is also classified as a tree.

5. **Analyze the Banana**: The banana plant, despite its height and structure, is classified as a herbaceous plant, not a tree. It does not have a woody trunk like traditional trees. Instead, it has a pseudostem made of tightly packed leaf bases.

6. **Conclusion**: After analyzing all the options, we conclude that the banana is not a tree. Therefore, the answer to the question is the banana.

### Final Answer:
The option that is not a tree is **banana**.

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