Yeast is a unicellular eukaryote organisms which is included in

Options

A. Protista
B. Monera
C. Phycomycetes
D. Ascomycetes

Answer

To solve the question "Yeast is a unicellular eukaryote organism which is included in:", we will follow these steps:

### Step 1: Understand the Classification of Organisms
Organisms are classified into five kingdoms: Monera, Protista, Fungi, Plantae, and Animalia. Each kingdom has specific characteristics.

**Hint:** Remember the five kingdoms and their main characteristics.

### Step 2: Identify the Characteristics of Yeast
Yeast is a unicellular organism and is classified as a eukaryote. Eukaryotes have a defined nucleus and organelles, which distinguishes them from prokaryotes (like bacteria).

**Hint:** Focus on the definition of eukaryotes and unicellular organisms.

### Step 3: Determine the Kingdom to Which Yeast Belongs
Since yeast is a fungus, it falls under the kingdom Fungi. Fungi are characterized by their cell walls made of chitin and their mode of nutrition, which is typically absorptive.

**Hint:** Recall the characteristics that define fungi.

### Step 4: Identify the Phylum of Yeast
Fungi are further divided into various phyla. Yeast specifically belongs to the phylum Ascomycota, which is known for producing spores in a sac-like structure called an ascus.

**Hint:** Remember that Ascomycota is often referred to as "sac fungi."

### Step 5: Evaluate the Given Options
The options provided are:
- Protista
- Monera
- Phycomycetes
- Ascomycetes

From our classification:
- Protista is incorrect as it includes organisms like Hydra.
- Monera is incorrect as it includes prokaryotes like bacteria.
- Phycomycetes is another phylum of fungi, but not where yeast belongs.
- Ascomycetes is correct as it is the phylum that includes yeast.

**Hint:** Compare each option with the classification of yeast.

### Conclusion
Yeast is a unicellular eukaryote organism that is included in the phylum Ascomycetes.

**Final Answer:** Ascomycetes