Class 9 Science: Cell-The Fundamental Unit of Life Olympiad Questions

When we see any living organisms in the world, they are made of cells. Whether there is a single cell or a type of multicellular cell, they perform their functions. The term cells refer to the unit's structure present in the living organisms. These are the cells that are made with pre-existing cells.

Organisms

The organisms are classified into two parts: unicellular organisms and multicellular organisms.

1. Unicellular organisms

• Unicellular organisms are organisms that are made of single cells.
• Unicellular organisms are organisms that are made of single cells.

2. Multicellular organisms

• Multicellular organisms are organisms that are made of different parts of cells.
• These cells form the different parts and functions of the organism.
• Example: Fungi, animals.

Cell's shape

• The cell's shape is very different as it depends on the function type it is made of. And each shape of the cell will perform various functions.
• Example: WBC (White Blood Cells) or Amoeba.

Elements of cell

The cell comprises three different components: the plasma membrane, nucleus, and cytoplasm. These are discussed below:

• The plasma membrane is an envelope type that covers the whole cell parts.
• The cell will get separated from the external environment due to the plasma membrane.