Question

A certain species of bacteria, Halobacterium, has a photosynthetic membrne that is colored purple. Its photosynthetic action spectrum is exactly opposite (complementary) to the action spectrum of green plants and photosynthetic organisms. What wavelengths of light do the Halobacterium photosynthetic pigments absorb?

Answer 1

Answer:

Blue and red

Explanation:

Action spectrum is the region of light that is utilized for photosynthesis by photosynthetic organisms.

According to several research, the rate of photosynthesis in green plants is highest in red region of light, followed by blue region.

If Halobacterium's photosynthetic action spectrum is the opposite of green plants and photosynthetic organisms, it means the rate of photosynthesis in  Halobacterium will be highest in blue light, followed by red.

The answer is blue and red.