Choose the odd one out w.r.t class

Options

A. Insecta
B. Dicotyledonae
C. Mammalia
D. Angiospermae

Answer

To solve the question "Choose the odd one out w.r.t class," we need to analyze the given options in the context of biological classification.

### Step-by-Step Solution:

1. **Understand Taxonomy Hierarchy**:
- Taxonomy is the science of classification of living organisms. The hierarchy includes several ranks: Kingdom, Phylum (or Division in plants), Class, Order, Family, Genus, and Species.

2. **Identify the Options**:
- The options provided are:
- Insecta
- Dicotyledonae
- Mammalia
- Angiospermae

3. **Classify Each Option**:
- **Insecta**: This is a class within the Phylum Arthropoda. It includes all insects.
- **Dicotyledonae**: This is a class within the Angiosperms (flowering plants). It includes plants that have two cotyledons.
- **Mammalia**: This is a class within the Phylum Chordata. It includes all mammals.
- **Angiospermae**: This is a group that refers to flowering plants as a whole, which is a higher taxonomic rank than class (it encompasses multiple classes, including Dicotyledonae).

4. **Determine the Odd One Out**:
- Insecta, Dicotyledonae, and Mammalia are all classes.
- Angiospermae, however, is not a class but a higher taxonomic category that includes multiple classes of flowering plants.
- Therefore, Angiospermae is the odd one out.

5. **Final Answer**:
- The odd one out is **Angiospermae**.