Which of the following protozoa are incorrectly paired with their description ?

Options

A. Ciliates—complex, unicellular organisms with macronucleus and micronuclei
B. Foraminiferas—flagellated heterotrophs, free-living or symbiotic
C. Actinopods—planktonic with slender, raylike axopodia
D. Rhizopods--naked and shelled amoebas

Explanation

To determine which protozoa are incorrectly paired with their descriptions, we will analyze each option provided in the question step by step.

### Step 1: Analyze Option 1 - Ciliates
- **Description**: Ciliates are described as complex unicellular organisms with macronucleus and micronuclei.
- **Analysis**: This description is accurate. Ciliates are indeed complex unicellular organisms that possess both a macronucleus and micronuclei.
- **Conclusion**: This option is correctly paired.

### Step 2: Analyze Option 2 - Foraminiferas
- **Description**: Foraminiferas are described as flagellated heterotrophs that are free-living or symbiotic.
- **Analysis**: Foraminiferas are primarily known to be marine organisms with a shell and are not flagellated. They are typically not free-living; rather, they are found in marine environments and can be symbiotic. Therefore, this description is incorrect.
- **Conclusion**: This option is incorrectly paired.

### Step 3: Analyze Option 3 - Actinopods
- **Description**: Actinopods are described as planktonic with slender ray-like exopodia.
- **Analysis**: This description is accurate. Many actinopods are indeed planktonic and have slender, ray-like exopodia that aid in locomotion.
- **Conclusion**: This option is correctly paired.

### Step 4: Analyze Option 4 - Rhizopods
- **Description**: Rhizopods are described as naked and shelled amoebas.
- **Analysis**: This description is accurate. Rhizopods include both naked amoebas and those that have shells.
- **Conclusion**: This option is correctly paired.

### Final Conclusion
After analyzing all the options, the protozoa that are incorrectly paired with their description is **Option 2: Foraminiferas**.

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