Read the following paragraph about an organism .
These organisms are unicellular eukaryotes . Their body moves along decaying twigs and leaves engulfing organic material . Under suitable conditions, they from an aggregation called plasmodium which may grow and spread over several feet . During unfavorable conditions, the plasmodium differentiates and forma fruiting bodies bearing spores at their tips
Which of the following organism does it ?

Options

A. Protozoa
B. Euglenoids
C. Fungi
D. Slime moulds

Answer

To solve the question regarding the organism described in the paragraph, we need to analyze the characteristics mentioned and match them with the options provided. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Characteristics
The paragraph describes an organism that:
- Is a unicellular eukaryote.
- Moves along decaying organic material (twigs and leaves) and engulfs it.
- Forms an aggregation called plasmodium under suitable conditions.
- Differentiates into fruiting bodies that bear spores during unfavorable conditions.

### Step 2: Analyze the Options
The options provided are:
1. Protozoa
2. Euglenoids
3. Fungi
4. Slime molds

### Step 3: Evaluate Each Option
- **Protozoa**: These are unicellular eukaryotes, but they do not form plasmodium or fruiting bodies. They are typically heterotrophic and do not fit the description.

- **Euglenoids**: Also unicellular eukaryotes, they can photosynthesize and are not known to form plasmodium or fruiting bodies. They primarily thrive in freshwater environments.

- **Fungi**: Fungi are multicellular (most) and are not classified as unicellular eukaryotes. They do not fit the description provided in the paragraph.

- **Slime molds**: These are indeed unicellular eukaryotes that can move and engulf organic material. They form a plasmodium under suitable conditions and can differentiate into fruiting bodies that bear spores during unfavorable conditions.

### Step 4: Conclusion
Based on the analysis, the organism described in the paragraph is best matched with **Slime molds**.

### Final Answer
The correct option is **4. Slime molds**.

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