Plant Structure By: Geonyzl  L. Alviola
Plant organs <ul><li>The major organs of vascular plants are: </li></ul><ul><li>- Roots </li></ul><ul><li>- Shoots </li></ul>
Roots <ul><li>Present in all vascular plants </li></ul><ul><li>Typically function as anchorage and  absorption of water an...
 
Shoot <ul><li>Consist of apical meristems that would give rise to leaves, stem and other organs. </li></ul>
Stem <ul><li>A cylindrical organ that bears the  leaves </li></ul><ul><li>Typically function for  conduction of water and ...
Leaf <ul><li>Organ of the shoot that is dorsiventrally flattened </li></ul><ul><li>Usually function for : </li></ul><ul><l...
Buds <ul><li>Are immature shoot system </li></ul><ul><li>Located in the  axils of the leaves </li></ul><ul><li>But may gro...
Plant reproductive organs <ul><li>In non-vascular plants </li></ul><ul><li>- sporangium – the basic spore-forming </li></ul>
Plant reproductive organs <ul><li>In heterosporous plants </li></ul><ul><li>- male (microsporangium)‏ </li></ul><ul><li>- ...
Plant reproductive organs <ul><li>Flower for  angiosperms, bearing  sporophylls: </li></ul><ul><li>- stamen and carpels </...
Plant Habit <ul><li>Refers to the general form of a plant: </li></ul><ul><li>1. herb </li></ul><ul><li>2. liana </li></ul>...
Definition of  terms <ul><li>Annual  – a plant  that  completes its  cycle in one  year (during  which time it  germinates...
<ul><li>Perennial  – a plant that lives for a  number of  years. Woody have permanent aerial form which  continue to  grow...
Herb  <ul><li>A plant  in which any aboveground shoots, whether vegetative or reproductive. </li></ul><ul><li>Short in  he...
Vine  <ul><li>A plant with weak, elongated  stems </li></ul><ul><li>Generally supported by means of scrambling, twining, t...
Liana <ul><li>A vine that is perennial and woody  </li></ul>
Shrub <ul><li>A perennial, woody plant with several main stems arising at ground level. </li></ul><ul><li>distinguished fr...
Tree <ul><li>Generally tall perennial plants </li></ul><ul><li>Having one main stem arising at  ground level </li></ul>
Plant Habit <ul><li>Refers to the general  environment where the plant is  growing : </li></ul><ul><li>- terrestrial - eme...
Terrestrial
Aquatic (emersed)‏ <ul><li>Occuring underwater (the whole body)‏ </li></ul>
Aquatic (Floating)‏ <ul><li>Occuring at the water  surface. </li></ul>Duck weed
Aquatic (Emergent)‏ <ul><li>Having roots or stems anchored to the  substrate under water  and  aerial shoots  growing abov...
cattail
Epiphytic <ul><li>Growing on another plant </li></ul>
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Plant And Structures

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Plant And Structures

  1. 1. Plant Structure By: Geonyzl L. Alviola
  2. 2. Plant organs <ul><li>The major organs of vascular plants are: </li></ul><ul><li>- Roots </li></ul><ul><li>- Shoots </li></ul>
  3. 3. Roots <ul><li>Present in all vascular plants </li></ul><ul><li>Typically function as anchorage and absorption of water and minerals </li></ul><ul><li>Consist of apical meristem that give rise to: </li></ul><ul><li>- root cap </li></ul><ul><li>- root hairs </li></ul><ul><li>- lateral roots </li></ul><ul><li>- central endodermis vascular </li></ul>
  4. 5. Shoot <ul><li>Consist of apical meristems that would give rise to leaves, stem and other organs. </li></ul>
  5. 6. Stem <ul><li>A cylindrical organ that bears the leaves </li></ul><ul><li>Typically function for conduction of water and minerals </li></ul><ul><li>Support and elevation of some leaves and reproductive structures </li></ul>
  6. 7. Leaf <ul><li>Organ of the shoot that is dorsiventrally flattened </li></ul><ul><li>Usually function for : </li></ul><ul><li>- transpiration </li></ul><ul><li>- photosynthesis </li></ul><ul><li>Derived from leaf primordia </li></ul><ul><li>Vascular plants, have many vascular bundles while mosses, the gametophytic leaves contains costa. </li></ul>
  7. 8. Buds <ul><li>Are immature shoot system </li></ul><ul><li>Located in the axils of the leaves </li></ul><ul><li>But may grow lateral vegetative branches </li></ul><ul><li>Or reprodutive structure </li></ul>
  8. 9. Plant reproductive organs <ul><li>In non-vascular plants </li></ul><ul><li>- sporangium – the basic spore-forming </li></ul>
  9. 10. Plant reproductive organs <ul><li>In heterosporous plants </li></ul><ul><li>- male (microsporangium)‏ </li></ul><ul><li>- female (megasporangium)‏ </li></ul><ul><li>CAPSULE, sprorangium of liverwort, mosses and hornworts </li></ul><ul><li>CONE or strobilus </li></ul>
  10. 11. Plant reproductive organs <ul><li>Flower for angiosperms, bearing sporophylls: </li></ul><ul><li>- stamen and carpels </li></ul><ul><li>Ovule is a megasporangium enveloped by one or more protective integuments. </li></ul><ul><li>Seed. - a mature ovule </li></ul>
  11. 12. Plant Habit <ul><li>Refers to the general form of a plant: </li></ul><ul><li>1. herb </li></ul><ul><li>2. liana </li></ul><ul><li>3. vine </li></ul><ul><li>4. shrub </li></ul><ul><li>5. tree </li></ul>
  12. 13. Definition of terms <ul><li>Annual – a plant that completes its cycle in one year (during which time it germinates, flowers, produces seeds and dies)‏ </li></ul><ul><li>example : sunflower </li></ul><ul><li>Biennial – a plant that requires two growing seasons to complete its cycle. During the first year it builds up food reserves, which are used during the second year in the production of flowers and seeds </li></ul><ul><ul><li>example : carrot </li></ul></ul>
  13. 14. <ul><li>Perennial – a plant that lives for a number of years. Woody have permanent aerial form which continue to grow year after year. </li></ul><ul><li>Examples : Mango tree, Talisay tree </li></ul><ul><li>Ephemeral – an annual plant that complete its life cycle in less than one growing season. </li></ul><ul><li>Examples: weeds , desert plants (completing their life cycle in a short period following rain)‏ </li></ul>
  14. 15. Herb <ul><li>A plant in which any aboveground shoots, whether vegetative or reproductive. </li></ul><ul><li>Short in height </li></ul>
  15. 16. Vine <ul><li>A plant with weak, elongated stems </li></ul><ul><li>Generally supported by means of scrambling, twining, tendrils or roots. </li></ul><ul><ul><li>It may either be annual or perennial </li></ul></ul><ul><ul><li>Herbaceous or woody </li></ul></ul>
  16. 17. Liana <ul><li>A vine that is perennial and woody </li></ul>
  17. 18. Shrub <ul><li>A perennial, woody plant with several main stems arising at ground level. </li></ul><ul><li>distinguished from a tree by its multiple stems and lower height </li></ul>
  18. 19. Tree <ul><li>Generally tall perennial plants </li></ul><ul><li>Having one main stem arising at ground level </li></ul>
  19. 20. Plant Habit <ul><li>Refers to the general environment where the plant is growing : </li></ul><ul><li>- terrestrial - emersed </li></ul><ul><li>- aquatic - floating </li></ul><ul><li>- epiphytic - emergent </li></ul><ul><li>- saxicolous </li></ul>
  20. 21. Terrestrial
  21. 22. Aquatic (emersed)‏ <ul><li>Occuring underwater (the whole body)‏ </li></ul>
  22. 23. Aquatic (Floating)‏ <ul><li>Occuring at the water surface. </li></ul>Duck weed
  23. 24. Aquatic (Emergent)‏ <ul><li>Having roots or stems anchored to the substrate under water and aerial shoots growing above water. </li></ul>
  24. 25. cattail
  25. 26. Epiphytic <ul><li>Growing on another plant </li></ul>

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