Upload
ermira-kusari
View
44
Download
0
Embed Size (px)
Citation preview
PLANTS
PHOTO = light SYNTHESIS = composition
PHOTOSYNTHESIS
CHLOROPLAST AND CHLOROPHYLL
CHLOROPLAST: the
organelle (plastid) that
contains chlorophyll
CHLOROPHYLL:the green pigment within the chloroplast
Too strong - radiation
Too weak - insufficient
Plants absorb the RED and BLUE light
Plants reflect GREEN and YELLOW light
PLANTS
SEEDEDSEEDLESS
VASCULARNON-VASCULAR
FLOWERING PLANTS
(ANGIOSPERMS)
NAKED SEEDS (GYMNOSPERM
)
Vascular Tissues
Transport of water and
nutrients in vascular plants
1. Root2. Stem3. Leaf
Root- Absorb water and nutrients- Reinforce the plant to the
substrate- Store food
Abosrption of water through root hairsRoot hairs are shortlived and regenerate the whole time
Active absorption of waterenergy used to absorb water through root hairs
Passive absorption of waterabsorption is done through transpiration (release of water through leaves). Root
hairs do not have an active role
Pando – trembling giant
• 430,000 m2
• ONE root system• 6,000,000 kg• 80,000 years old
Stem
- Transport of water and nutrients to the other parts of the plant
- Support for leaves, flower and fruits
- Store food- Photosynthesis
*Diameter: 7.7m*Height: 83.8m*Age: 2,300 – 2,700 years
Transport of water and nutrients from the root to the stem and other parts of the plant
Transpiration (evaporation of water through leaves)
Only 5% of the whole amount of water absorbed by the plant is used for its growth. 95% is release through transpiration
Importance of Transpiration
Higher Plants
VegetativeOrgans
Root Stem Leaf
ReproductiveOrgans
Flower Seed Fruit