Question

Differentiate between the absorption spectrum and the action spectrum.

Answer 1

Hint:The spectrum of absorption includes wavelengths of light absorbed by each pigment while the spectrum of action shows the total rate of photosynthesis for each light wavelength.

Complete answer:Absorption spectroscopy refers to spectroscopy techniques that, due to their interaction with a sample, measure radiation absorption, in relation to frequency and wavelength. The sample receives energy from the radiant field, i.e., photons.
An action spectrum is a diagram of the biological efficiency rate against the light wavelength. In certain structures, it is correlated with the absorption spectrum. The inverse amount of light needed to elicit a constant reaction is defined mathematically.

Absorption Spectrum	Action Spectrum
The wavelength of light absorbed by each pigment is shown by, for example, chlorophyll.	The total photosynthesis ratio is shown in each light wavelength.
The graph shows the various light-absorbed wavelengths of the various pigments in the leaf in the photosynthesis process.	It reflects the efficacy of the various wavelengths of light in photosynthesis
It distinguishes the relationship between light quality and the ability of pigments to absorb.	It translates the relationship between photosynthesis and various wavelengths of light
It can be specifically observed.	It is studied with respect to produced oxygen or ingested carbon dioxide.
A spectrophotometer can measure the absorption of wavelengths of different pigments.	The photosynthesis can be measured by the carbon fastening, the production of oxygen, NADP reduction, etc.

Note: It's necessary to point out that the highest absorption in the blue region takes place, but the highest photosynthesis occurs in the red region. A graph showing the rate of a chemical reaction or physiological activity against the light wavelength is an action spectrum. It demonstrates which light wavelength is best used in a certain chemical reaction.