NEETBotanyPhotosynthesis in Higher Plants
How are Photosystem I (PS I) and Photosystem II (PS II) named?
Options
- ABased on their structure
- BBased on their function during the light reaction
- CBased on their sequence of discovery
- DBased on their size
Correct answer
C. Based on their sequence of discovery
Step-by-step solution
Light reactions or the ‘Photochemical’ phase include light absorption, water splitting, oxygen release, and the formation of high-energy chemical intermediates, ATP and NADPH. Several protein complexes are involved in the process. The pigments are organised into two discrete photochemical light harvesting complexes (LHC) within the Photosystem I (PS I) and Photosystem II (PS II). These are named in the sequence of their discovery, and not in the sequence in which they function during the light reaction. The LHC are