Halobacterium has a photosynthetic membrane that is colored purple. its photosynthetic action spectrum is exactly complementary (opposite to) the action spectrum for green plants. what wavelengths of light do the halobacterium photosynthetic pigments absorb? a) red and yellow b) blue, green, and red c) green and yellow d) red and green e) blue and red

Green and yellow.

Explanation:

The genus Halobacterium includes most of the archean species and shows aerobic metabolism. The membrane of the Halobacterium is purple in color and they are generally in rod shape.  

Halobacteria shows the complementary action spectrum to the green plants. Green plants shows blue and orange-red light. The complementary color for blue and orange-red light is green and yellow. The halobacteria absorbs the yellow and green wavelength of light and reflects the purple color.

Thus, the correct answer is option (C).

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