1. The Sun!! Photosynthesis
Where does the energy come from that sustains all life?
The Sun!!

2. Photosynthesis Animation
Watch me!

5. Exchange of Gases
Stoma (plural is stomata) is an opening in the leaf’s epidermis and cuticle
carbon dioxide enters and oxygen exits the plant’s leaves (or stem) through the stoma
each stoma has two guard cells that act as double doors

6. Transpiration
Transpiration – the process by which plants release water vapor into the air through stomata (The loss of water from a plant’s leaves.)
Water released during transpiration is replaced by water absorbed by the plants roots
If more water is lost through transpiration than the plant can absorb through the roots, the plant wilts.

7. Transpiration Transpiration Video
Why do you think knowing about the exchange of gases and transpiration in plants is important?

8. I. Photosynthesis
The process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to make food
Happens in the chloroplast
Chlorophyll – a green
pigment that captures
light energy for
photosynthesis
CHLOROPLAST

9. 1. Chlorophyll (green pigment) captures the sunlight
Water, carbon dioxide, and sunlight enter a plant and react. How do they enter???
1. Chlorophyll (green pigment) captures the sunlight
2. Carbon dioxide (CO2) enters through the
stomata
3. Water (H2O) enters through the roots

10. Glucose and oxygen are produced. 1. Glucose is the plant’s food. 2
Glucose and oxygen are produced Glucose is the plant’s food O2 is released through the stomata since it is not needed.

11. Yes, you need to draw, color, and label this picture!
(chlorophyll)
(stomata)
(stomata)
(glucose)