Organisms are made of cells that carry out metabolic functions. They grow through cell growth and reproduction, and have a life cycle from birth to death. To survive, organisms require energy, respond and adapt to stimuli in their environment, and reproduce through asexual or sexual means to continue their species. Their cells, tissues, or entire bodies may also regenerate or move under their own power.

1. Characteristics of Life

2. Unique Cellular Organization
Every organism is made up of cell.
UNICELLULAR
MULTICELLULAR

3. • Cell is the basic unit of
structure and function of an
every organism.
• An organism’s metabolic
function is carried out by
the cell.

4. Growth
• Growth is the increase in size and
volume of an organism.
• When cells grow and
reproduce, the organism grows.

5. Life Cycle
Life cycle is the history of an
organism from birth to death.

6. Energy Requirement

7. Respond to Stimuli/ Irritability
Stimuli are factors that may affect living things
such as heat, light, temperature, pressure, and
chemical substance.

8. Reproduction
Organisms have two
modes of reproduction:
1.Asexual reproduction –
without the use of
gametes
2.Sexual reproduction –
involves gametes

9. Asexual Reproduction
Once a branch of the
strawberry plants
touches the ground, it
develop roots and a
new plant grows
Regeneration in a starfish

10. Asexual Reproduction
Bacteria
reproduce
through cell-
division.

11. Movement
Paramecium E. Coli