The first action spectrum based on photosynthesis was given by ______(a) Jan Ingenhousz(b) Joseph Mathew(c) Cornelius Van Neil(d) T. W. EngelmannI got this question in an interview for job.My question is based upon Photosynthesis Basics topic in chapter Photosynthesis in Higher Plants of Biology – Class 11

The first action spectrum based on photosynthesis was given by ______(

1.	The first action spectrum based on photosynthesis was given by ______(a) Jan Ingenhousz(b) Joseph Mathew(c) Cornelius Van Neil(d) T. W. EngelmannI got this question in an interview for job.My question is based upon Photosynthesis Basics topic in chapter Photosynthesis in Higher Plants of Biology – Class 11
Answer» Correct answer is (d) T. W. Engelmann The explanation is: T. W. Engelmann discovered the FIRST action SPECTRUM based on photosynthesis. He split LIGHT into its spectral components VIBGYOR by USING a prism. A green alga i.e. Cladophora was used to detect the sites of O2 evolution.

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