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Plant Anatomy Pictures

Plant Anatomy Pictures. Plant tissues fit into 3 main categories: Dermal tissues : epidermis, trichomes (“hairs”), guard cells, root hairs Ground tissues : parenchyma (with chloroplasts = chlorenchyma), sclerenchyma, collenchyma

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Plant Anatomy Pictures

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  1. Plant Anatomy Pictures

  2. Plant tissues fit into 3 main categories: Dermal tissues: epidermis, trichomes (“hairs”), guard cells, root hairs Ground tissues: parenchyma (with chloroplasts = chlorenchyma), sclerenchyma, collenchyma Vascular tissues: xylem (dead at maturity: tracheids and vessel elements), phloem (living: sieve tube cells [no nuclei], companion cells [with nuclei])

  3. Stem tip: apical meristem divides, adding on new cells; cells mature into various tissues.

  4. Root tip: root lengthens by adding on cells

  5. Region of cell division (mitosis) in a root tip. Cells with chromo-somes can be seen in stages of mitosis.

  6. External morphology of a stem. How can you determine age?

  7. Cross-section: young dicot stem with ring of vascular bundles

  8. Cross-section: young dicot stem with ring of vascular bundles

  9. Cross-section: woody stem showing 3 years of secondary growth. Note pith at center. Dark (reddish) ring is the bark containing a layer of living phloem and outer dead cork.

  10. Monocot stem section showing scattered vascular bundles and enlargement of single vascular bundle (“monkey face”).

  11. Cross-section of a root

  12. Cross-section of a root

  13. Cross-section of a root showing branch root formed by pericycle.

  14. Epidermal cells of root showing formation of root hairs from single cells.

  15. Which end is up?

  16. Monocot or dicot?

  17. Monocot or dicot?

  18. Monocot or dicot?

  19. Monocot or dicot?

  20. Method of pollination?

  21. Stem, root, or leaf?

  22. What are the holes in the cork?

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