PPT

1. WELCOME

2. ARYA V
REG NO : 18115373005
MANNAM FOUNDATION CENTRE FOR
EDUCATION TECHNOLOGY

3. What is Photosynthesis?
 Takes Place in Plant’s Leaves
 Series of Reactions in Plant Cells
 Conversion of Light Energy
 Provides Chemical Energy
 Base of Almost All Food Chains

4. The “Typical” Plant Cell
 Eudicot
 Genetic material
 membrane bound organelles
 Cell Wall
 Vacuole
 Chloroplasts

5. Overall Reaction
 CO2 + H2O sunlight Sugar + O2
Chlorophyll
 Chlorophyll and sunlight must be present
 Takes place in a series of two reactions
1. Light reaction=first
2. Calvin Cycle=second

6. Light Reaction
 Dependent upon presence of sunlight (photons)
 Takes place in chloroplasts (thylakoid)
 Transfers Electrons in four reactions
 Overall Reaction
 H2O sunlight/chlorophyll O2 + ATP + NADPH

7. Light Reaction Continued
 Produces …
 Oxygen (O2)
 Chemical Energy to fuel Calvin Cycle
 ATP
 NADPH

8. Calvin Cycle
 Takes place in chloroplasts (stroma)
 Formerly “Dark Reaction”
 Does not require photons
 Requires products of light reaction
 Produces usable energy in series of reactions
 Sugar

10. Importance of Photosynthesis
 Provides base for almost all food chains
 May have been initial means for evolution
 Waste from photosynthesis is oxygen
 Leads to increased biodiversity

11. Human Uses for Plants
 Food
 Raw materials
 Fuel
 Clothing
 Currency
 The List is endless!

12. Review; Photosynthesis…
 Takes place in plant’s leaves
 Happens in chloroplasts in plant cell
 Photosynthesis converts photons into sugar
 Light reaction
 Dark reaction
 Very important for everyone!

13. Work Cited
 Slide 2
 http://www.pdphoto.org/PictureDetail.php?mat=&pg=5528.
Leaf- 2003-01-05.
 Slide 4
 http://www.flickr.com/photos/skitzitilby/1242020466/. under
the horsechestnut tree enjoying peace and quiet
 Slide 8
 http://www.butler.edu/herbarium/treeid/photosynthesis.jpg.
 Slide 10
 http://www.flickr.com/photos/elena_norbiato/2444950911/.
Fruits and Colors.

14. THANK YOU