Laboratory 13

Gas Exchange and Photosynthesis

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A.  Uptake of Carbon Dioxide in Photosynthesis

Left to right; phenol red with added CO2, dark treatment, light treatment

B.  Requirement of Carbon Dioxide for Photosynthesis

Experimental set-up.

Left to right; open grown, no light, no CO2

Five days later.

Open grown, stained with iodine.

No CO2, stained with iodine.

No light stained with iodine.

 

C.  Carbon Dioxide Use:  Oxygen Release

    

 

Left to right;  tap water, boiled tap water (gasses removed), enriched (with CO2) tap water

D.  Chloroplast Structure and Function in C3 and C4 Plants

Triticum (wheat) leaf - C3

 

Zea (corn) leaf - C4

  

 

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