Euglena divides by longtiudinal fission .

Answer

### Step-by-Step Solution:

1. **Understanding Euglena**: Euglena is a single-celled organism classified under the Protista kingdom. It exhibits both plant-like and animal-like characteristics, depending on environmental conditions.

**Hint**: Remember that Euglena can photosynthesize when sunlight is available and can also absorb nutrients when it is not.

2. **Reproductive Method**: Euglena reproduces asexually through a process known as binary fission. This means that one Euglena cell divides to form two new cells.

**Hint**: Asexual reproduction does not involve the fusion of gametes and results in offspring that are genetically identical to the parent.

3. **Process of Binary Fission**: The process begins with mitosis, where the nucleus of the Euglena cell divides. Following this, the cytoplasm divides, leading to the formation of two separate cells.

**Hint**: Mitosis is crucial in ensuring that each new cell receives an identical set of chromosomes.

4. **Type of Division**: Euglena divides by longitudinal fission. This means that the division occurs along the length of the cell rather than across its width (transverse division).

**Hint**: Visualize the Euglena cell; longitudinal division means splitting it from the front end to the back end, creating two elongated cells.

5. **Direction of Division**: The division starts at the front end of the Euglena cell. This is important to note as it indicates the orientation of the fission process.

**Hint**: Think of the Euglena as a small boat; longitudinal fission would be like splitting the boat from bow to stern.

6. **Outcome of Division**: After the longitudinal fission, two Euglena cells emerge from the original cell, each capable of independent survival and reproduction.

**Hint**: This process allows for rapid population growth under favorable conditions.

### Summary:
Euglena reproduces asexually through longitudinal binary fission, which involves the mitotic division of the nucleus followed by the division of the cell along its length, starting from the front end.