DENDROLOGY

Detailed explanation-1: -Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.

Detailed explanation-2: -When all the vital functions which are necessary for life are performed by a single cell then such cell is called the unicellular organism. Some examples of unicellular organisms are Amoeba, Paramecium etc. Bacteria are also unicellular organisms.

Detailed explanation-3: -A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms.

Detailed explanation-4: -Euglena is a unicellular organism. It is made up of a single cell that is capable of performing all the life processes required by it to survive.