Living things can be categorized into different levels of organization from cells to tissues to organs to systems. Cells are the basic unit of structure and function, and while all cells share basic characteristics, cells also specialize to carry out different functions. The organization of cells into tissues, organs and systems allows animals and plants to effectively interact with their environments and carry out the essential life processes of nutrition, respiration and reproduction.

1. natural

2. What’s biodiversity?
Our planet has millions of species. There are many more species that
we haven’t discovered yet. This is called biodiversity.

3. What are the characteristics of living things?
All living things carry out the basic life processes of interaction,
reproduction and nutrition.
All living things are made up of cells.

4. What are the different parts of an animal cell?
Membrane
Organelles
Nucleus Cytoplasm

5. What are the different parts of a plant cell?
Nucleus
Vacuole
Membrane
Cell wall

6. How are animals organised?
Cell
Organ
Tissue
System
Similar cells join together to form tissues. Different tissues join together to
form organs. Organs work together to form systems.

7. Are all cells the same?
Red blood cells Nerve cells Reproductive cells
Not all cells are the same. Different cells have different functions.

8. How are plants organised?
Cell Tissue Organ System
Plants are organised in a similar way to animals.

9. What systems do living things have?
Interaction: the
muscular system,
the skeletal system
and nervous system
Reproduction: the female and
male reproductive systems
Nutrition: the digestive
system, the respiratory
system and the
circulatory system

10. What have we learnt?
All living things carry out the basic life processes of …
interaction nutrition reproduction

11. What have we learnt?
The parts of an animal cell are …
nucleus membrane cytoplasm organelles

12. What have we learnt?
Animals and plants have…
cells tissues organs systems