Select the odd one from the list
(a) Bubo bubo
(b) Varanus bengalensis
(c) Gallus gallus
(d) Pavo cristatus

Options

A. Bubo bubo
B. Varanus bengalensis
C. Gallus gallus
D. Pavo cristatus

Answer

To solve the question of selecting the odd one from the list, we need to analyze each option provided:

1. **Bubo bubo**: This is the scientific name for the Eurasian Eagle Owl, which is a bird.

2. **Varanus bengalensis**: This is known as the Bengal Monitor, which is a large terrestrial lizard.

3. **Gallus gallus**: This is the scientific name for the domestic chicken, which is also a bird.

4. **Pavo cristatus**: This is the scientific name for the Indian Peafowl, commonly known as the peacock, which is also a bird.

Now, let's categorize these organisms:

- **Birds**:
- Bubo bubo (Eurasian Eagle Owl)
- Gallus gallus (Domestic Chicken)
- Pavo cristatus (Indian Peafowl)

- **Lizard**:
- Varanus bengalensis (Bengal Monitor)

From this categorization, we can observe that three of the options (Bubo bubo, Gallus gallus, and Pavo cristatus) are birds, while only one option (Varanus bengalensis) is a lizard.

Therefore, the odd one out is **(b) Varanus bengalensis**.

### Step-by-Step Solution:
1. Identify each organism by its scientific name.
2. Classify the organisms into categories (birds and lizards).
3. Count how many organisms belong to each category.
4. Identify which category has only one representative.
5. Conclude that the organism from the category with only one representative is the odd one out.