Euglina is photosynthetic as well as saprophytic.chloroplast is found in Euglina,it behave like photosynthetic autotrophic in presence of light and behave like hetrotrophic in absence of light.

Euglena: Photosynthetic and Saprophytic

Euglena is a unicellular organism that belongs to the kingdom Protista. It is a mixotrophic organism, meaning it can obtain nutrition in multiple ways. Euglena can perform both photosynthesis and saprophytic feeding, making it the correct answer for the given question.

Photosynthesis in Euglena:
Euglena possesses chloroplasts, which are responsible for carrying out photosynthesis. These chloroplasts contain chlorophyll pigments that capture light energy from the sun. During photosynthesis, Euglena utilizes this light energy to convert carbon dioxide and water into glucose and oxygen. This process occurs in the presence of sunlight and results in the production of food (glucose) for the organism.

Saprophytic Feeding in Euglena:
In addition to photosynthesis, Euglena has the ability to obtain nutrients through saprophytic feeding. When sunlight is not available or conditions are unfavorable for photosynthesis, Euglena can switch to saprophytic mode. It engulfs organic matter, such as dead plants or animals, and digests it using enzymes. This allows Euglena to obtain necessary nutrients, such as nitrogen and phosphorous, from decaying organic material.

Advantages of Mixotrophy:
The ability of Euglena to perform both photosynthesis and saprophytic feeding provides several advantages:

1. Flexibility: Euglena can switch between photosynthesis and saprophytic feeding depending on the availability of sunlight and organic matter. This enables the organism to survive in diverse environments.

2. Energy Efficiency: Photosynthesis allows Euglena to produce its own energy-rich molecules (glucose) using sunlight. This is more efficient compared to solely relying on saprophytic feeding for obtaining nutrients.

3. Nutritional Adaptability: By being both photosynthetic and saprophytic, Euglena can obtain a wider range of essential nutrients. This increases its chances of survival in varying ecological conditions.

Conclusion:
Euglena is a unique organism that exhibits both photosynthetic and saprophytic feeding capabilities. This mixotrophic nature enables Euglena to adapt to different environmental conditions and ensure its survival.