Plants 2c: Plant Parts PPt. by, Robin D. Seamon ROOTS & STEMS
ROOTS:
<ul><li>ROOTS: </li></ul><ul><li>Activity </li></ul><ul><li>Root Hunt Lab </li></ul><ul><li>Grow a potato </li></ul><ul><l...
 
<ul><li>ROOTS:  </li></ul><ul><li>hold the plant in the ground (anchor) </li></ul><ul><li>Stop erosion </li></ul><ul><li>T...
Taproot Grows straight down with a few side branches  Fibrous Root Grows more shallow, ‘hairy’; many fine- branching roots...
<ul><li>Tuber:  modified plant structure enlarged to hold nutrients  </li></ul><ul><li>stem tuber,  (onion) </li></ul><ul>...
<ul><li>Bulbs :  underground shoot that stores food; roots grow underneath (stem tuber) </li></ul>Buttress Roots  grow fro...
Mangrove roots grow negative geotropism (up!) and then back down.
 
See LINK
In the Garden: (Special roots & stems)
Carrots   and   Beetroot Carrots and beetroot are thickened tap roots which have very few lateral roots. Both are biennial...
    Ginger Ginger is a  rhizome  - a type of stem which grows horizontally just under the surface of the ground. Leaves gr...
Potatoes This is likely to trick many people. Potatoes are not roots but underground storage stems which are formed when t...
    Sweet Potatoes Sweet potatoes are the greatly thickened roots of the fibrous root system of the sweet potato plant whi...
Onions   and   Garlic Onions and garlic are  bulbs . A bulb is an underground storage organ which consists of a very short...
STEM: PPt. by, Robin D. Seamon
STEM: Activity <ul><li>Stem Hunt Lab </li></ul><ul><li>Stem Rubbing </li></ul><ul><li>Flower Chains </li></ul><ul><li>Cele...
<ul><li>Woody stems & soft stems </li></ul><ul><li>Carry water & minerals up and food down </li></ul><ul><li>Hold the plan...
<ul><li>TROPISMS:  movement of a plant </li></ul><ul><li>Positive tropism   (moving toward the stimulus) </li></ul><ul><li...
BACK http://cccmkc.edu.hk/~sbj-biology/AL%20BIO/Continuity%20of%20life%20growth%20and%20development/Tropism%20%28phototrop...
BACK http://www.sciencephoto.com/media/102421/enlarge geotropism
http://marksteinmetz.photoshelter.com/image/I0000kfPWbfKSAFE Thigmotropism BACK
<ul><li>Vine : </li></ul>Runner A special kind of stem that grows up and sideways; it climbs A runner produces an identica...
 
<ul><li>PLANT LABS: </li></ul><ul><li>Leaves:  Identify & graph your collection into journal; view & draw fern spores; Ans...
<ul><li>LAB:  ROOTS </li></ul><ul><li>RULES:  BE GENTLE WITH THE ROOTS.  They are wilting! </li></ul><ul><li>What is the p...
<ul><li>LAB:  STEM </li></ul><ul><li>RULES:  BE GENTLE WITH THE BARK SPECIMENS.  </li></ul><ul><li>What is the purpose of ...
Upcoming SlideShare
Loading in …5
×

Plants2 plant parts roots & stems, specialized roots, tropisms, includes labs, visuals, & video clips

7,883 views
7,484 views

Published on

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
7,883
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
135
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Plants2 plant parts roots & stems, specialized roots, tropisms, includes labs, visuals, & video clips

  1. 1. Plants 2c: Plant Parts PPt. by, Robin D. Seamon ROOTS & STEMS
  2. 2. ROOTS:
  3. 3. <ul><li>ROOTS: </li></ul><ul><li>Activity </li></ul><ul><li>Root Hunt Lab </li></ul><ul><li>Grow a potato </li></ul><ul><li>Grow seeds in a bag </li></ul><ul><li>Carrot Top growing </li></ul><ul><li>Root a cutting in water </li></ul>
  4. 5. <ul><li>ROOTS: </li></ul><ul><li>hold the plant in the ground (anchor) </li></ul><ul><li>Stop erosion </li></ul><ul><li>Take in water & minerals for the plant </li></ul><ul><li>Parts of a root: </li></ul>Root cap : thin covering, protects root tip Root hairs : threadlike parts of cells on surface of root Phloem: path that food from leaves take down the plant to roots Xylem: path that water & minerals take up the plant Cortex : stores food in roots & stems
  5. 6. Taproot Grows straight down with a few side branches Fibrous Root Grows more shallow, ‘hairy’; many fine- branching roots foxtail dandelion
  6. 7. <ul><li>Tuber: modified plant structure enlarged to hold nutrients </li></ul><ul><li>stem tuber, (onion) </li></ul><ul><li>root tuber, (sweet potato) </li></ul><ul><li>potato tuber (potato) </li></ul>
  7. 8. <ul><li>Bulbs : underground shoot that stores food; roots grow underneath (stem tuber) </li></ul>Buttress Roots grow from the trunk for added support Epiphyte: strangler Fig <ul><li>Special kinds of ‘roots’: Link </li></ul>
  8. 9. Mangrove roots grow negative geotropism (up!) and then back down.
  9. 11. See LINK
  10. 12. In the Garden: (Special roots & stems)
  11. 13. Carrots and Beetroot Carrots and beetroot are thickened tap roots which have very few lateral roots. Both are biennials i.e. they only grow for two years. In the first year they store food manufactured by their leaves in their tap root, and in the second year they use the stored food to produce flowers (called bolting). We harvest the carrots or beetroots before they bolt.    
  12. 14.     Ginger Ginger is a rhizome - a type of stem which grows horizontally just under the surface of the ground. Leaves grow from buds at the nodes on the stem. The stem is thick and fleshy and stores reserve food for the plant.
  13. 15. Potatoes This is likely to trick many people. Potatoes are not roots but underground storage stems which are formed when the growth point of an underground stem, a  rhizome, almost stops lengthening and increases greatly in thickness. This forms an underground storage organ which stores large quantities of starch.  
  14. 16.     Sweet Potatoes Sweet potatoes are the greatly thickened roots of the fibrous root system of the sweet potato plant which contain reserves of starch.    
  15. 17. Onions and Garlic Onions and garlic are bulbs . A bulb is an underground storage organ which consists of a very short stem on which fleshy bases of the leaves store food for the plant.      
  16. 18. STEM: PPt. by, Robin D. Seamon
  17. 19. STEM: Activity <ul><li>Stem Hunt Lab </li></ul><ul><li>Stem Rubbing </li></ul><ul><li>Flower Chains </li></ul><ul><li>Celery Dying </li></ul><ul><li>Tropism experiments </li></ul>
  18. 20. <ul><li>Woody stems & soft stems </li></ul><ul><li>Carry water & minerals up and food down </li></ul><ul><li>Hold the plant up (leaves & flowers) </li></ul><ul><li>A tree’s stem is called a trunk </li></ul><ul><li>Some grow underground (potato) </li></ul>
  19. 21. <ul><li>TROPISMS: movement of a plant </li></ul><ul><li>Positive tropism (moving toward the stimulus) </li></ul><ul><li>Negative tropism (moving away from the stimulus) </li></ul><ul><li>Geotropism : all above ground plant parts grow away from gravity (up) </li></ul><ul><li>Phototropism - all stems bend towards the sunlight- </li></ul><ul><li>thigmotropism : response to physical contact- Vines : special kind of ‘climbing’ stem </li></ul><ul><li>Some grow along the ground ( runners ) like strawberries </li></ul>ADVANCE VIDEO Creeper vines climb
  20. 22. BACK http://cccmkc.edu.hk/~sbj-biology/AL%20BIO/Continuity%20of%20life%20growth%20and%20development/Tropism%20%28phototropism%29%20experiment.htm Phototropism
  21. 23. BACK http://www.sciencephoto.com/media/102421/enlarge geotropism
  22. 24. http://marksteinmetz.photoshelter.com/image/I0000kfPWbfKSAFE Thigmotropism BACK
  23. 25. <ul><li>Vine : </li></ul>Runner A special kind of stem that grows up and sideways; it climbs A runner produces an identical plant to the mother BACK
  24. 27. <ul><li>PLANT LABS: </li></ul><ul><li>Leaves: Identify & graph your collection into journal; view & draw fern spores; Answer questions in Plant Journal. </li></ul><ul><li>Flowers: identify & draw 5 local spring flowers on white paper. Glue into journal. Roots: identify fibrous & taproots; draw 7 label root parts in journal; Answer questions in Plant Journal. </li></ul><ul><li>Seeds: seed dissection: label 3 parts of the seed into journal; observe pine nuts in pinecones-- sketch into journal; Answer questions in Plant Journal. </li></ul><ul><li>Stems: Compare three different types of bark. Notice the color & texture. How do the grains run? Is there a pattern? Create a bark rubbing with a dark crayon (rubbed sideways). Sketch the three specimens. </li></ul>Header:
  25. 28. <ul><li>LAB: ROOTS </li></ul><ul><li>RULES: BE GENTLE WITH THE ROOTS. They are wilting! </li></ul><ul><li>What is the purpose of a root for a plant? ____________________, __________________________________ </li></ul><ul><li>What part of the root that carries water up the plant? _____________ </li></ul><ul><li>What part of the root carries water & nutrients down the plant? _____________ </li></ul><ul><li>Sketch & label the roots you have in your station into your journal. (root hairs, rootcap, fibrous root, taproot) </li></ul><ul><li>What is the difference between a fibrous root and a taproot? ________________________________________ _______________________________________________________________ </li></ul><ul><li>Name some roots that we eat. ________________________ _________________________________________________ </li></ul>Header:
  26. 29. <ul><li>LAB: STEM </li></ul><ul><li>RULES: BE GENTLE WITH THE BARK SPECIMENS. </li></ul><ul><li>What is the purpose of a stem for a plant? ______________________________ </li></ul><ul><li>Compare three different types of bark. Notice the color & texture. How do the grains run? Is there a pattern? Sketch the three specimens. </li></ul><ul><li>What is a vine?___________________________________ </li></ul><ul><li>What is a runner? __________________________________ </li></ul>Header:

×