Which of these combinations is correct about protozoans ?

Options

A. Entamoeba - Sporozoan , Paramecium - ciliated protozoan
B. Plasmodium - Sporozoan , Trypanosome - Ciliated protozoan
C. Paramecium - Ciliated protozoan, Trypanosome - Flagellated Protozoan
D. Entamoeba - Ciliated protozoan , Plasmodium - Flagellated protozoan

Answer

To determine the correct combination about protozoans from the given options, we need to analyze the characteristics of different protozoans mentioned in the question. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Characteristics of Protozoans
Protozoans are unicellular eukaryotic organisms that belong to the kingdom Protista. They can be classified based on their movement and other characteristics.

**Hint:** Remember that protozoans are classified into different groups based on their locomotion methods.

### Step 2: Analyze Entamoeba
Entamoeba is a type of protozoan that moves using pseudopodia. It is known to cause amoebic dysentery in humans.

**Hint:** Identify the type of movement associated with Entamoeba and the disease it causes.

### Step 3: Analyze Paramecium
Paramecium is a ciliated protozoan, meaning it has hair-like structures called cilia that aid in movement and feeding.

**Hint:** Look for the presence of cilia in Paramecium and its role in locomotion.

### Step 4: Analyze Plasmodium
Plasmodium is a non-motile protozoan that belongs to the group known as sporozoans. It is a parasite that causes malaria and is transmitted by female Anopheles mosquitoes.

**Hint:** Remember that Plasmodium is associated with malaria and is non-motile.

### Step 5: Analyze Trypanosome
Trypanosome is a flagellated protozoan, which means it has flagella for movement. It is known to cause sleeping sickness.

**Hint:** Identify the type of movement in Trypanosome and the disease it is associated with.

### Step 6: Evaluate the Options
Now, we can evaluate the options based on the characteristics we have discussed:

1. **Entamoeba is a sporozoan** - Incorrect (It is not a sporozoan; it moves with pseudopodia).
2. **Paramecium is a ciliated protozoan** - Correct (It has cilia).
3. **Plasmodium is a sporozoan** - Correct (It is non-motile and causes malaria).
4. **Trypanosome is a ciliated protozoan** - Incorrect (It is flagellated).

### Conclusion
The correct combination about protozoans is that **Paramecium is a ciliated protozoan, and Trypanosome is a flagellated protozoan**. Therefore, the correct answer is option 3.

**Final Answer:** Option 3 is the correct answer.