EVERYDAY SCIENCE

Detailed explanation-1: -Unicellular organisms are made up of a single cell and perform all the life processes for survival and independent existence.

Detailed explanation-2: -Some are composed of a single cell and are called unicellular organisms. So, unicellular organisms are capable of independent existence and can perform allthe essential functions of life.

Detailed explanation-3: -The single cell of a unicellular organism such as an Amoeba performs all vital life activities (e.g., respiration, metabolism, repair, assimilation) and organismic level activities (e.g., intake of food, exchange of respiratory gases, excretion, reproduction).

Detailed explanation-4: -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-5: -A unicellular organism is composed of a single cell. This single cell performs all the biological processes required for the maintenance of life activities of a cell. Thus, in case of unicellular organisms, all life activities are performed by a single cell.