Select the option with a correct representation of an animal to the below-mentioned class of vertebrates:
I. The jawless animal in which the body is devoid of scales and paired fins.
II. They have four pairs of gills that are covered by an operculum.
III. The body is covered by dry and cornified skin, epidermal scales or scutes.
IV. Skin is dry without glands and long bones are hollow with air cavities.

Options

A. I - Calotes , II - Neophron , III - Clarius , IV - Lamprey
B. I - Clarius, II - Lamprey , III - Neophron , IV - Calotes
C. I - Lamprey , II - Clarius, III - Calotes , IV - Neophron
D. I - Lamprey, II - Calotes , III - Clarius, IV - Neophron

Answer

To solve the question, we need to analyze the characteristics given in the statements and identify the correct representation of animals from the options provided. Let's break it down step by step.

### Step 1: Analyze the Characteristics
1. **Jawless animal, devoid of scales and paired fins**: This description fits **Cyclostomes**, which include animals like **lampreys**. They have a circular mouth and lack jaws, scales, and paired fins.

2. **Four pairs of gills covered by an operculum**: This characteristic is typical of **bony fishes**. Bony fishes have gills that are covered by a bony plate called the operculum, and they possess four pairs of gills.

3. **Body covered by dry and cornified skin, epidermal scales or scutes**: This description is characteristic of **reptiles**. Reptiles have dry skin that is often covered with scales or scutes, which are shed periodically.

4. **Skin is dry without glands and long bones are hollow with air cavities**: This feature is indicative of **birds**. Birds have hollow bones that make them lighter for flight, and their skin is dry and lacks glands.

### Step 2: Identify the Correct Animal Representations
Now, we need to match these characteristics with the animals in the options provided:

- **Lamprey**: A jawless fish (Cyclostome) fitting the first characteristic.
- **Clarius**: A bony fish fitting the second characteristic.
- **Calotus**: A lizard (reptile) fitting the third characteristic.
- **Neophron**: An Egyptian vulture (bird) fitting the fourth characteristic.

### Step 3: Evaluate the Options
Now, we will evaluate the options given in the question:

1. **Option 1**: Calotus, Neophron, Calyreus, Lamprey - Incorrect order.
2. **Option 2**: Calyreus, Lamprey, Neophron, Calotus - Incorrect order.
3. **Option 3**: Lamprey, Clarius, Calotus, Neophron - Correct order.
4. **Option 4**: Lamprey, Calotus, Clarius, Neophron - Incorrect order.

### Conclusion
The correct representation of the animals corresponding to the given characteristics is found in **Option 3**: Lamprey (jawless), Clarius (bony fish), Calotus (reptile), Neophron (bird).

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