Light and Photosynthesis

Laboratory 11

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Transmission electron micrograph of a chloroplast.

A. Pigment Separation by Paper Chromatography

B. Properties of Chlorophyll

Spectroscope.

Unfiltered light source.

Chlorophyll A

Xanthophyll.

Photosynthetic pigment extract. Reflected light (left), fluorescence (right).

C. Requirement of Light for Photosynthesis

Experimental treatment.

Left to right; pigments removed, untreated leaf stained with iodine, treated leaf stained with iodine.

D. Requirement of Chlorophyll for Photosynthesis

Left to right; coleus leaf, pigments removed, stained with iodine.

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