Science Olympiad Miscellaneous Worksheet-2

Science Olympiad Miscellaneous Worksheet-2

True or False.

1. The feathers of birds are good insulators.

2. Belladona has medicinal properties.

3. Saprophytes derive their food from dead organisms.

4. Silk fibre is produced by certain insects.

5. Water is used to produce electricity.

6. Food energy is transferred from one organism to the other through food web.

7. Mammals are homeothermic animals.

8. Man is an amphibian.

9. Very high concentration of carbon dioxide accelerates plant growth.

10. 'Lac' is a plant product.

11. Ferns have leaves, stems, and roots.

12. Wolffia ('least duckweed') is the smallest flowering plant.

13. Australian Cedar tree is the tallest flowering plant.

14. Bacteria have leaves, stems, and roots.

15. Moss and riccia are green, flowering plants.

16. Exchange of air takes place in the lungs.

17. CO₂ is formed as a waste product during respiration.

18. Epiglottis guards the opening of larynx into pharynx.

Answer Key:

1. True

2. True

3. True

4. True

5. True

6. True

7. True

8. False

9. False

10. False

11. True

12. True

13. False

14. False

15. False

16. True

17. True

18. True