HORTICULTURE

Detailed explanation-1: -Single-celled organisms are called unicellular organisms. All prokaryotic organisms such as Bacteria, Archaea are unicellular. A single cell performs all functions such as metabolism, excretion and reproduction. They reproduce by asexual means.

Detailed explanation-2: -These single cells are known as unicellular organisms. All the life processes in a unicellular organism, including digestion, excretion, respiration, occur within a single cell. These cannot be seen by naked eyes and are hence called microorganisms.

Detailed explanation-3: -Amoeba is a single celled animal.

Detailed explanation-4: -A unicellular organism also known as a single-celled organism is an organism that consists of only one cell and this cell performs all the vital functions of that organism. A multicellular organism that consists of more than one cell.