Question

Both euglena and Cyanobacteria are photosynthetic unicellular organisms found in pond water. The feature that distinguishes euglena from Cyanobacteria is the-

A. Ability to maintain homeostasis

B.presence of ribosomes

C.presence of nuclear membrane

Answer 1

The correct answer is option C, that is, the presence of the nuclear membrane.  

Cyanobacteria is a phylum of bacteria that attain their energy via the process of photosynthesis, and are the only photosynthetic prokaryotes possessing the tendency to generate oxygen. As a prokaryote, they are devoid of the nuclear membrane.  

Euglena refers to a single cell flagellate eukaryote. It comes under the class Euglenoidea. The species of Euglena are witnessed in salt water and in freshwater. Being a eukaryote, they possess nuclear membrane.  

Answer 2

The difference between them is the presence of nuclear membrane in euglena.

A unicellular organism is an organism that possess only one cell. Usually, here are organelles in the cell that enables the organism carry out its functions

Euglena is;

• Photosynthetic
• Unicellular
• Has a cell membrane

So, euglena and Cyanobacteria are photosynthetic, they are able to manufacture their own food. However, the difference between them is the presence of nuclear membrane in euglena.

Learn more about nuclear membrane: https://brainly.com/question/7320002