Grade 7: Life and Living Topic 1

1. Life
Requirements to sustain life

2. The Biosphere and other domains
Abiotic factors
• Non-living physical and chemical
elements
• E.g. :
• Air
• Soil
• Temperature
• Light
• Water
• Minerals
Biotic factors
• Living or once-living organisms
• E.g.:
• Protists
• Bacteria
• Fungi
• Plants
• Animals
2 Grade 7: Life and Living

3. Characteristics of biotic
organisms
• Movement
• Respiration
• Sensitivity
• Growth
• Reproduction
• Excretion
• Nutrition
3 Grade 7: Life and Living

4. Is this a living organism?
4 Grade 7: Life and Living

5. Is this a living organism?
5 Grade 7: Life and Living
This Photo by Unknown Author is licensed under CC BY-SA-NC

6. Is this a living organism?
6 Grade 7: Life and Living
This Photo by Unknown Author is licensed under CC BY-SA

7. Is this a living organism?
7 Grade 7: Life and Living
This Photo by Unknown Author is licensed under CC BY-SA

8. Requirements for
Sustaining Life
• Energy
• Gases
• Water
• Soil
• Favourable temperatures
8 Grade 7: Life and Living

9. What does this organism need to stay alive?
9 Grade 7: Life and Living

10. What does this organism need to stay alive?
10 Grade 7: Life and Living

11. What does this organism need to stay alive?
11 Grade 7: Life and Living
This Photo by Unknown Author is licensed under CC BY-SA

12. What does this organism need to stay alive?
12 Grade 7: Life and Living