Question

what do you mean by unicellular organism​

Answer 1

UNICELLULAR ORGANISM :

Living organism are made up of one or many cells. Organism made up of a single cell are called unicellular organism.

• Amoeba, paramicium, yeast and bacteria are the few examples of unicellular organism.
• The single cell of these organism behave like a complete organism.
• All the basic function of the living being like digestion, respiration, excretion and reproduction are performed by a single cell.
• Unicellular organism like a amoeba, paramecium reproduce Asexually.

FOR EXAMPLE :

Amoeba is unicellular oganism. It performs all the functions like taking food (ingestion), digestion, respiration, movement, growth and reproduction.

• Unicellular organism have short life span as compare to multicellular organism.
• We can see a unicellular organism by the help of microscope. It is not possible to see the unicellular organism by the naked eyes.

MORE TO KNOW :

Organism made up of many cells are called Multicellular organism.

• We can see the multicellular organism by the naked eyes.
• Multicellular organism have a long lifespan.
• They reproduce sexually
• Most of the plants and animals that we see around us are multicellular organism.
• Examples of the Multicellular organism are Trees, Human being, Birds and many more.

Answer 2

$\huge\bold\purple{AnSwEr}$

• The single-celled organisms are called unicellular organisms.

-------------------------

Learn more

• Organisms made of more than one cells are called multicellular organisms.
• Organisms with billions of cells begins life as single cell.
• A single celled organisms performs all the necessary functions that multicellular organisations perform.
• A single celled like amoeba captures and digestive foods, respires, excretes, grows and reproduces.
• Similar functions in multicellular organisms are carried out by groups of specialised cells forming different tissues.
• Tissues turns into forms of organs.