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Transcript of Plants
![Page 1: Plants](https://reader035.fdocuments.us/reader035/viewer/2022081605/58ed035f1a28ab3a3a8b46ed/html5/thumbnails/1.jpg)
PLANTS
![Page 2: Plants](https://reader035.fdocuments.us/reader035/viewer/2022081605/58ed035f1a28ab3a3a8b46ed/html5/thumbnails/2.jpg)
PHOTO = light SYNTHESIS = composition
PHOTOSYNTHESIS
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CHLOROPLAST AND CHLOROPHYLL
CHLOROPLAST: the
organelle (plastid) that
contains chlorophyll
![Page 4: Plants](https://reader035.fdocuments.us/reader035/viewer/2022081605/58ed035f1a28ab3a3a8b46ed/html5/thumbnails/4.jpg)
CHLOROPHYLL:the green pigment within the chloroplast
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Too strong - radiation
Too weak - insufficient
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Plants absorb the RED and BLUE light
Plants reflect GREEN and YELLOW light
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PLANTS
SEEDEDSEEDLESS
VASCULARNON-VASCULAR
FLOWERING PLANTS
(ANGIOSPERMS)
NAKED SEEDS (GYMNOSPERM
)
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Vascular Tissues
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Transport of water and
nutrients in vascular plants
1. Root2. Stem3. Leaf
![Page 13: Plants](https://reader035.fdocuments.us/reader035/viewer/2022081605/58ed035f1a28ab3a3a8b46ed/html5/thumbnails/13.jpg)
Root- Absorb water and nutrients- Reinforce the plant to the
substrate- Store food
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Abosrption of water through root hairsRoot hairs are shortlived and regenerate the whole time
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Active absorption of waterenergy used to absorb water through root hairs
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Passive absorption of waterabsorption is done through transpiration (release of water through leaves). Root
hairs do not have an active role
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Pando – trembling giant
• 430,000 m2
• ONE root system• 6,000,000 kg• 80,000 years old
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Stem
- Transport of water and nutrients to the other parts of the plant
- Support for leaves, flower and fruits
- Store food- Photosynthesis
![Page 19: Plants](https://reader035.fdocuments.us/reader035/viewer/2022081605/58ed035f1a28ab3a3a8b46ed/html5/thumbnails/19.jpg)
*Diameter: 7.7m*Height: 83.8m*Age: 2,300 – 2,700 years
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Transport of water and nutrients from the root to the stem and other parts of the plant
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Transpiration (evaporation of water through leaves)
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Only 5% of the whole amount of water absorbed by the plant is used for its growth. 95% is release through transpiration
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Importance of Transpiration
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Higher Plants
VegetativeOrgans
Root Stem Leaf
ReproductiveOrgans
Flower Seed Fruit