Answer:
21. Eyepiece
22. Arm
23. Objective lens
25. Base
26. Stage
27. Coarse adjustment
28. illuminator
30. Eyepiece tube or Body tube
31. Fine focus
32. Stage clip
33. Golgi appratus
34. Rough Endoplasmic Reticulum (ER)
35. Smooth ER
36. Centrioles
37. Cell
38. Mitochondrion
39. Microtubules
40. Cytoplasm
