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PHOTOSYNTHESIS
GROUP 4
Light Energy and Plants
Learning Objectives
 By the end of this lesson, students should be able to:
-explain that the process of photosynthesis converts light
energy to chemical energy.
- explain that the sun is the original energy source for most
life on earth.
-identify the reactants and products of photosynthesis.
-explain which reactions in photosynthesis are light
dependent which
are light independent.
-explain why many plants appear green to us here on
earth.
Return to TOC
Presenters
 John: Explain that the sun is the original energy source for most life
on earth and the basics components needed for photosynthesis. Share
short Discovery Education video on photosynthesis.
 Monique: Explain that the process of photosynthesis converts light
energy to chemical energy. Share the Nova Illuminating Photosynthesis
resource.
 Terence: Identify the reactants and products of photosynthesis, and
explain which reactions in photosynthesis are light dependent which
are light independent. Share the resource Teach Engineering.
 Michelle: Explain why many plants appear green to us here on earth.
Share the resource Biology 4 Kids.
Return to TOC
What is the process of photosynthesis?
 Photosynthesis converts light energy into chemical energy.
 Photosynthesis provides the energy needed by most plants,
animals, and other living things.
Return to TOC
The Process of Photosynthesis
Return to TOC
The Process of Photosynthesis
The process of photosynthesis converts light energy to chemical energy.
Return to TOC
Nova Illuminating Photosynthesis
Return to TOC
Light Dependent and Independent
Reactions in Photosynthesis
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Light Dependent Reactions:
Light Independent Reactions: The Calvin Cycle
Light Dependent Reactions:
Light Independent Reactions: The Calvin Cycle
Light Dependent and Independent
Reactions in Photosynthesis
Return to TOC
Teach Engineering
Return to TOC
Different wavelengths of visible light are seen
by the human eye as different colors.
WHYWHY AREARE PLAPLANTSNTS GREGREEN?EN?
Gamma
rays
X-rays UV Infrare
d
Micro-
waves
Radio
waves
Visible light
Wavelength (nm)
Why are plants green?
Reflected
light
Transmitted light
Sunlight minus absorbedSunlight minus absorbed
wavelengths or colorswavelengths or colors
equals the apparent color ofequals the apparent color of
an object.an object.
 The green color
comes from
chlorophyll in the
chloroplasts
 Chloroplasts absorb
light energy and
convert it to
chemical energy
Light
Reflected
light
Absorbed
light
Transmitted
light
Chloroplast
THE COLOR OF LIGHT SEEN IS THE
COLOR NOT ABSORBED
 Photosynthesis is the process by which
autotrophic organisms use light energy to make
sugar and oxygen gas from carbon dioxide and
water
AN OVERVIEW OF PHOTOSYNTHESIS
Carbon
dioxide
Water Glucose Oxygen
gas
PHOTOSYNTHESIS
Photosynthesis
 Occurs in chloroplasts
 The green color comes from chlorophyll
in the chloroplasts
 Chlorophyll is the green pigment that
captures light for photosynthesis
 The pigments absorb light energy and
create sugar and oxygen
Biology 4 Kids
Return to TOC
Resources and References
 Google Images of Photosynthesis
 Nova Illuminating Photosynthesis
 Teach Engineering
 Biology 4 Kids
Return to TOC
Photosynthesis Quiz
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1. The process of photosynthesis converts
a. Nutrients into cell growth
b. Cell mass into plant structure
c. Light energy into chemical energy
d. Plant cells into animal cells
Photosynthesis Quiz
Return to TOC
2. The origin of energy for most life on earth is
a. Carbon, oxygen, and water
b. Natural light from the sun
c. The Earths core
d. The atom
Photosynthesis Quiz
Return to TOC
3. What are the reactants and products of
photosynthesis?
a. Oxygen and water; carbon
dioxide and sugars
b. Sugars and oxygen; water and
carbon dioxide
c. Carbon dioxide and water; sugar
and oxygen
Photosynthesis Quiz
Return to TOC
4. The process of photosynthesis is divided into
two main parts.
What is the order of the process?
a. Light independent reaction and light dependent
reaction
b. Light dependent reaction and light independent
reaction
c. Both of the above
d. None of the above
Photosynthesis Quiz
Return to TOC
5. Plants appear green to the human eye due to
a. Reflection of green light
b. The processing of chloroplast
c. Absorption of pure light
d. The processing of chlorophyll

More Related Content

Group 4 photosyntheis Presentation-MSP

  • 2. Learning Objectives By the end of this lesson, students should be able to: -explain that the process of photosynthesis converts light energy to chemical energy. - explain that the sun is the original energy source for most life on earth. -identify the reactants and products of photosynthesis. -explain which reactions in photosynthesis are light dependent which are light independent. -explain why many plants appear green to us here on earth. Return to TOC
  • 3. Presenters John: Explain that the sun is the original energy source for most life on earth and the basics components needed for photosynthesis. Share short Discovery Education video on photosynthesis. Monique: Explain that the process of photosynthesis converts light energy to chemical energy. Share the Nova Illuminating Photosynthesis resource. Terence: Identify the reactants and products of photosynthesis, and explain which reactions in photosynthesis are light dependent which are light independent. Share the resource Teach Engineering. Michelle: Explain why many plants appear green to us here on earth. Share the resource Biology 4 Kids. Return to TOC
  • 4. What is the process of photosynthesis? Photosynthesis converts light energy into chemical energy. Photosynthesis provides the energy needed by most plants, animals, and other living things. Return to TOC
  • 5. The Process of Photosynthesis Return to TOC
  • 6. The Process of Photosynthesis The process of photosynthesis converts light energy to chemical energy. Return to TOC
  • 8. Light Dependent and Independent Reactions in Photosynthesis Return to TOC
  • 9. Light Dependent Reactions: Light Independent Reactions: The Calvin Cycle Light Dependent Reactions: Light Independent Reactions: The Calvin Cycle Light Dependent and Independent Reactions in Photosynthesis Return to TOC
  • 11. Different wavelengths of visible light are seen by the human eye as different colors. WHYWHY AREARE PLAPLANTSNTS GREGREEN?EN? Gamma rays X-rays UV Infrare d Micro- waves Radio waves Visible light Wavelength (nm)
  • 12. Why are plants green? Reflected light Transmitted light Sunlight minus absorbedSunlight minus absorbed wavelengths or colorswavelengths or colors equals the apparent color ofequals the apparent color of an object.an object.
  • 13. The green color comes from chlorophyll in the chloroplasts Chloroplasts absorb light energy and convert it to chemical energy Light Reflected light Absorbed light Transmitted light Chloroplast THE COLOR OF LIGHT SEEN IS THE COLOR NOT ABSORBED
  • 14. Photosynthesis is the process by which autotrophic organisms use light energy to make sugar and oxygen gas from carbon dioxide and water AN OVERVIEW OF PHOTOSYNTHESIS Carbon dioxide Water Glucose Oxygen gas PHOTOSYNTHESIS
  • 15. Photosynthesis Occurs in chloroplasts The green color comes from chlorophyll in the chloroplasts Chlorophyll is the green pigment that captures light for photosynthesis The pigments absorb light energy and create sugar and oxygen
  • 17. Resources and References Google Images of Photosynthesis Nova Illuminating Photosynthesis Teach Engineering Biology 4 Kids Return to TOC
  • 18. Photosynthesis Quiz Return to TOC 1. The process of photosynthesis converts a. Nutrients into cell growth b. Cell mass into plant structure c. Light energy into chemical energy d. Plant cells into animal cells
  • 19. Photosynthesis Quiz Return to TOC 2. The origin of energy for most life on earth is a. Carbon, oxygen, and water b. Natural light from the sun c. The Earths core d. The atom
  • 20. Photosynthesis Quiz Return to TOC 3. What are the reactants and products of photosynthesis? a. Oxygen and water; carbon dioxide and sugars b. Sugars and oxygen; water and carbon dioxide c. Carbon dioxide and water; sugar and oxygen
  • 21. Photosynthesis Quiz Return to TOC 4. The process of photosynthesis is divided into two main parts. What is the order of the process? a. Light independent reaction and light dependent reaction b. Light dependent reaction and light independent reaction c. Both of the above d. None of the above
  • 22. Photosynthesis Quiz Return to TOC 5. Plants appear green to the human eye due to a. Reflection of green light b. The processing of chloroplast c. Absorption of pure light d. The processing of chlorophyll