1. Onion peel
2. Wheat louse
3. Root cap
4. Lemon branch
5. Stamen
6. Plant ovary
7. Camellias
8. Geranium leaf epidermis
9. Bee sting
10. Bee feather
11. Hydra
12. Volvox
13. Euglena
14. Paramecium
15. Worm
16. Mosquito mouth parts
17. Ascaris
18. Laurel