Paramylum is a carbohydrates similar to starch... The chloroplasts found in Euglena contain chlorophyll which aids in the synthesis of carbohydrates to be stored as starch granules and paramylum..
So right answer is Euglenoid..
Hope it's help...

Paramylum is stored food of Euglenoid.

Euglenoids are a group of single-celled organisms that belong to the phylum Euglenophyta. They are mainly found in freshwater environments and exhibit characteristics of both plants and animals. Euglenoids are known for their unique ability to perform photosynthesis in the presence of light and to switch to heterotrophy in the absence of light.

What is Paramylum?
Paramylum is a type of storage carbohydrate found in euglenoids. It is a polysaccharide composed of glucose units linked together. Paramylum is similar in function to starch in plants and glycogen in animals. It serves as a reserve food source for euglenoids, allowing them to store excess energy for future use.

Function of Paramylum
1. Energy Storage: Paramylum serves as a source of energy for euglenoids. During photosynthesis, euglenoids produce glucose molecules, which are then converted into paramylum for storage. This stored energy can be utilized by the organism during periods of low light or nutrient availability.

2. Structural Support: Paramylum also plays a role in providing structural support to euglenoids. It forms granules within the cytoplasm of the cells, giving them a characteristic appearance under a microscope. These granules help maintain the shape and integrity of the cell.

Storage Organelle: Paramylon Bodies
Paramylon is stored in specialized organelles called paramylon bodies. These bodies are found within the cytoplasm of euglenoid cells and are responsible for storing and mobilizing paramylum. Paramylon bodies are typically oval or spherical in shape and can vary in size depending on the species of euglenoid.

Distribution of Paramylum
Paramylum is predominantly found in euglenoids, specifically those belonging to the genera Euglena and Phacus. These organisms have evolved the ability to store excess glucose as paramylum, allowing them to survive in varying environmental conditions.

Conclusion
In conclusion, paramylum is a storage carbohydrate specific to euglenoids. It serves as an energy reserve and provides structural support to these organisms. Paramylon bodies store and mobilize paramylum, allowing euglenoids to adapt to changes in light and nutrient availability.