alleryStart learning →Which instrument measures transmitted light and computes the absorption of a pigment sample?
AA spectrophotometer
BA paper chromatograph
CA bench centrifuge
DA light microscope
Answer & Solution
Correct answer: A. A spectrophotometer
1. A spectrophotometer measures transmitted light and computes the absorption from it.
2. Extracting pigments from leaves and placing them in the instrument shows which wavelengths are absorbed.
3. That is how the types of pigment present in an organism are identified.
4. Chromatography is the other named method, but it separates pigments rather than measuring absorption.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.2 The Light-Dependent Reactions of Photosynthesis_
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