1. Living things The characteristics of Life

2. Every single living organism carries out the same basic processes – different organisms just carry them out in different ways….

3. nutrition respiration excretion growth reproduction movement and
response
and

4. Nutrition means getting food
Plants can make their own food using energy from the sun (photosynthesis)
Animals need to find a source of food

5. Cell Respiration means releasing energy from food Water Carbon dioxide
Oxygen

6. means the removal of waste products of chemical reactions in the body
Excretion
means the removal of waste products of chemical reactions in the body
Animals excrete substances like carbon dioxide and urea and water.
Plants excrete carbon dioxide from their leaves.
NH3

7. the organism develops into an adult
Growth means
the organism develops into an adult
For micro-organisms, this means their cell grows to full size before reproducing
For multi-celled organisms, this means that cells divide, organs grow in size, and systems develop maturity

8. If living organisms are composed of cells, what do they need in order to grow bigger? …
…MORE CELLS !!

9. producing more organisms of the species
Scientists have a name for the “children” of all living organisms – they say OFFSPRING
Reproduction means
producing more organisms of the species
Some organisms reproduce from one parent only – this is called ASEXUAL reproduction
Other organisms reproduce by combining one cell from a male with one cell from a female – this is called SEXUAL reproduction

10. Movement means changing position
Some organisms can move the entire body
e.g. single-celled organisms
Some organisms can move part of the body e.g. plants
Some organisms can move both their entire body, and each section of the body eg insects, amphibians, reptiles, mammals
Most organisms move towards things they need and away from things that harm them

11. Response means reacting to changes in their environment
Some of the things that cause living organisms to respond are light, sound, touch, chemicals, gravity…eg:
Roots grow downwards in response to gravity, shoots grow towards light
Both plants and animals use their sense of touch when climbing
Predators use sound and smell to hunt for prey

12. What do you think?
Most animals move about while most plants tend to “stay put” – why?
Animals have highly developed nervous systems compared to plants – why?
A lot of plants have to use the help or wind or insects for reproduction – why?

13. Seven life processes