100 DAYS ACTION PLAN - MARCH 2026
UNIT 5 – OUR ENVIRONMENT
1 Marks Questions
12. Write a slogan to display on Environmental Day.
"Save Earth, Save Life!"
13. Which organisms represent the producers and herbivores in this food chain: Grass → Grasshopper → Frog → Snake → Eagle?
• Producer: Grass
• Herbivore: Grasshopper
• Herbivore: Grasshopper
14. Expand CFC.
Chlorofluorocarbon
15. Expand UNEP.
United Nations Environment Programme
16. What is the chemical name of O₃?
Ozone
17. Give an example of biodegradable and non-biodegradable wastes.
• Biodegradable: Vegetable peels / Paper
• Non-biodegradable: Plastic bags / Glass
• Non-biodegradable: Plastic bags / Glass
18. Give examples for decomposers.
Bacteria and Fungi.
19. What would happen if all producers in an ecosystem die?
• Consumers will not get food (since producers are the base of the food chain).
• The entire ecosystem will collapse.
• The entire ecosystem will collapse.
20. What would happen if there are no decomposers in an ecosystem?
• Waste and dead remains will accumulate.
• Essential nutrients will not return to the soil, stopping plant growth.
• Essential nutrients will not return to the soil, stopping plant growth.
21. According to Mendel, how many traits are responsible for a character?
Each character is controlled by two traits (also known as factors or alleles).