Some photosynthetic organisms contain chloroplasts that lack photosystem ii, yet are able to survive. the best way to detect the lack of photosystem ii in these organisms would be some photosynthetic organisms contain chloroplasts that lack photosystem ii, yet are able to survive. the best way to detect the lack of photosystem ii in these organisms would be to test for liberation of o2 in the light. to determine if they have thylakoids in the chloroplasts. to test for co2 fixation in the dark. to the action spectrum for photosynthesis.