3.3 From cell to organism
How do cells form organisms?
Human beings
All the organs in our body are made up of cells. Let us see how cells form an organism such as a human being.
Cell to tissue
In multicellular organisms, cells are grouped together to carry out a particular function. A group of cells working together to perform a particular function is called a tissue.
A type of tissue found in our body is muscle tissue, which is formed by a group of muscle cells.
Tissues to organ
An organ is formed when different tissues combine to perform a collective function.
An important organ in our body is the heart. It has muscle tissue, nerve tissue and connective tissue. All these tissues help the heart carry out its function of pumping blood to all the cells in our body.