The characteristics given below are associated with
(i) Body is covered by dry and cornified skin, epidermal scales or scutes
(ii) They have no external ear
(iii) Crawling, creeping habit
(iv) 2 chambered heart.

Options

A. reptile
B. bird
C. amphibian
D. Osteichthyes

Answer

To solve the question regarding the characteristics associated with a specific group of animals, we will analyze each characteristic step by step.

### Step-by-Step Solution:

1. **Identify the Characteristics**:
- The characteristics provided are:
(i) Body is covered by dry and cornified skin, epidermal scales or scutes.
(ii) They have no external ear.
(iii) Crawling, creeping habit.
(iv) 2 chambered heart.

2. **Analyze Each Characteristic**:
- **Characteristic (i)**: The presence of dry and cornified skin, along with epidermal scales or scutes, is typical of reptiles. This is a key feature that distinguishes reptiles from amphibians and other animal classes.
- **Characteristic (ii)**: The absence of external ears is also a characteristic of reptiles, particularly snakes. Unlike mammals, reptiles do not have external ear structures.
- **Characteristic (iii)**: The crawling and creeping habit indicates that the organism is likely limbless. Snakes are a prime example of this type of locomotion.
- **Characteristic (iv)**: A 2-chambered heart is found in some reptiles, such as snakes, as opposed to amphibians which typically have a 3-chambered heart, and mammals which have a 4-chambered heart.

3. **Determine the Group**:
- Based on the analysis of the characteristics, we can conclude that these traits are associated with reptiles. Specifically, snakes fit all the criteria outlined in the question.

4. **Final Conclusion**:
- Therefore, the answer to the question is that the characteristics given are associated with **Reptiles**.