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Go through the following characters - ...

Go through the following characters -
I. Heterodont and Thecodont (different types of teeth present in jaw)
II. Homiothermous (warm blooded)
III. Pulmonary respiration (respiration by lungs)
IV. Hairs
V. The most unique character is the presence of mammary glands
Dioecious, internal fertilization mostly viviparous
All above characters are assigned to

A

Reptiles

B

Mammals

C

Aves

D

Cyclostomes

Text Solution

AI Generated Solution

The correct Answer is:
To determine which group of animals the given characters belong to, we can analyze each characteristic step by step: ### Step-by-Step Solution: 1. **Heterodont and Thecodont Teeth**: - Heterodont refers to having different types of teeth (incisors, canines, molars), which is a characteristic of mammals. Thecodont means that the teeth are set in sockets, which is also seen in mammals. **Hint**: Look for animals that have different types of teeth and whose teeth are rooted in sockets. 2. **Homeothermous (Warm-Blooded)**: - Homeothermic animals maintain a constant body temperature regardless of the environment. This is a typical feature of mammals. **Hint**: Identify animals that can regulate their body temperature internally. 3. **Pulmonary Respiration**: - Pulmonary respiration indicates that the organism breathes through lungs, which is a characteristic of mammals. **Hint**: Think about animals that have lungs for breathing. 4. **Hairs**: - The presence of hair is a defining characteristic of mammals. All mammals possess some form of hair at some stage of their life cycle. **Hint**: Consider which group of animals is known for having hair or fur. 5. **Mammary Glands**: - The most unique characteristic mentioned is the presence of mammary glands, which are exclusive to mammals. These glands produce milk to nourish young. **Hint**: Focus on the feature that is unique to a specific group of animals. 6. **Dioecious, Internal Fertilization, Mostly Viviparous**: - Dioecious means having distinct male and female organisms. Internal fertilization and being mostly viviparous (giving birth to live young) are also traits associated with mammals. **Hint**: Think about the reproductive strategies of animals and which ones give birth to live young. ### Conclusion: Based on the analysis of all the characters, they are all assigned to **Mammals**. ### Final Answer: All the given characters are assigned to **Mammals**.
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