1. Photomicrographs
Plant Tissues

2. BOTANY
Algae
Cladophora species
Filament in form
Several cells

3. BOTANY
Algae
Acetabularia species
Many cells

4. BOTANY
Algae
Oedogonium species

5. BOTANY
Algae
Spirogyra species

6. BOTANY Spirogyra species Filamentous algae
Conjugation (sexual reproduction)
Phase contrast photo

7. BOTANY Algae Spirogyra species Filament in form
Spores: union of 2 cells
Bridge

8. BOTANY
Algae
filament

9. BOTANY
Algae
Chara species
Many cells

10. BOTANY
Algae
Chlamydomonas sp.
One cell

11. BOTANY
Algae
Euglena gracilis
One cell with flagella

12. BOTANY
Algae
Oscillatoria species
Filament in form
Series of cells

13. BOTANY
Algae
Ulothrix species
Many cells in filament

14. BOTANY Algae Volvox species Hundreds of cells in hollow sphere
Cells have flagella
Spirogyra species

15. BOTANY
Green algae
Pediastrum species
Group of cells

16. BOTANY
Oscillatoria species
Algae
Many cells

17. BOTANY
ANGIOSPERMS
ROOTS

18. BOTANY ANGIOSPERMS Dicot root Cross section Center of root
Xylem form “X”
Phloem at tip of xylem

19. BOTANY
Salix root, x.s.
Low magnification
Vascular bundle

20. BOTANY
Ranunculus root, x.s.
Low magnification
Vascular bundle

21. BOTANY
ANGIOSPERMS
STEMS

22. BOTANY
ANGIOSPERMS
Stem
Arrangement of bundles
Low magnification

23. BOTANY ANGIOSPERMS Bundle in stem Phloem (top) Cambium (middle)
Xylem (bottom)
(which is interior)

24. BOTANY
ANGIOSPERMS
Growth ring (xylem)
Tilia stem
Basswood tree

25. BOTANY ANGIOSPERMS Coleus stem Cross section of bundle Xylem -- inside
Phloem -- outside

26. BOTANY
Medicago stem, x.s.
Vascular bundles in ring

27. BOTANY ANGIOSPERMS Stem, composite Cross section Low magnification
Soft tissue

28. BOTANY
ANGIOSPERMS
Cells in stem
Thickened xylem
Cross section

29. BOTANY
Bamboo stem
Cross section

30. BOTANY ANGIOSPERMS Xylem cells in stem Longitudinal section
Annular rings (left)
Spiral rings (right)
Rings reinforce the cell wall.

31. BOTANY
Tilia, 3-year stem, x.s.
Bark

32. BOTANY
Tilia stem, 3-year, x.s.

33. BOTANY
ANGIOSPERMS
LEAF

34. BOTANY
Castalia leaf
Cross section
Floating water plant
Air spaces

35. BOTANY
Begonia leaf
Cross section
Air space
Guard cells (stomata)

36. BOTANY ANGIOSPERMS Leaf Surface view Low magnification (about 50X)
Notice the chloroplasts

37. BOTANY
Mangrove leaf, x.s.
Low magnification
Phase contrast photo

38. BOTANY Mangrove leaf, x.s. Through central vein Phloem Xylem
Phase contrast photo

39. BOTANY Mangrove leaf, x.s. Section through small vein
Phase contrast photo

40. BOTANY
Syringa leaf, x.s.
Low magnification

41. BOTANY
Zea mays leaf, x.s.
Leaf vein

42. BOTANY Oleander leaf, x.s. Pit to reduce water loss
Phase contrast photo

43. BOTANY Elodea meristem (rapidly dividing cell region)
Longitudinal section, l.s.

44. BOTANY
ANGIOSPERMS
FLOWER

45. BOTANY
Lotus bud, l.s.
Base (peduncle)
Flower

46. BOTANY
Flower petals

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