Which of the following properties in the options given below will be shown by all of the following organisms?
Trypanosoma, Noctiluca, Monocystis, and Giardia

Options

A. These are all parasites
B. They have flagella
C. They produce spores
D. These are all unicellular protists.

Answer

To solve the question regarding the common properties of the organisms Trypanosoma, Noctiluca, Monocystis, and Giardia, we will follow these steps:

### Step 1: Identify the Organisms
We first need to recognize the organisms mentioned:
- **Trypanosoma**: A single-celled parasitic zooflagellate known for causing sleeping sickness.
- **Noctiluca**: A marine, colorless dinoflagellate that is also unicellular.
- **Monocystis**: A microswimmer unicellular endoparasite protozoa found in earthworms.
- **Giardia**: A flagellated parasitic diplomonad that resides in the intestines of humans and causes diarrhea.

### Step 2: Analyze Common Characteristics
Next, we analyze the characteristics of these organisms:
- All four organisms are **unicellular** (composed of a single cell).
- They are classified under **protists**, which are a diverse group of eukaryotic microorganisms.

### Step 3: Determine the Common Property
From our analysis, the common property shared by all four organisms is that they are **unicellular protists**. This means they all belong to the same category of organisms based on their cellular structure and classification.

### Conclusion
Thus, the property shown by all of the organisms Trypanosoma, Noctiluca, Monocystis, and Giardia is that they are **unicellular protists**.