Science one-word quiz

Write a one-word answer for each question.

1. The powerhouse of the cell

2. The natural satellite of the Earth

3. The planet famous for its bright rings

4. The planet closest to the Sun

5. The planet we live on

6. The green pigment in leaves

7. Animals without a backbone are called

8. A reddish-brown metal used in electric wires

9. Animals that eat only plants are called

10. The transfer of pollen from anther to stigma

11. The part of a plant that absorbs water from the soil

12. The process by which a seed starts to grow into a plant

13. The SI unit of electric current

14. The organ we use for seeing

15. Water vapour changing back into liquid water

16. Animals with a backbone are called

17. The layer of air around the Earth

18. The instrument used to see very tiny things

19. The organ we use for hearing

20. The bouncing back of light from a surface

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