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during photosynthesis oxygen in glucose comes from oxygen in air water carbon dioxide both (2) & (3)

during photosynthesis oxygen in glucose comes from
  1. oxygen in air
  2. water
  3. carbon dioxide
  4. both (2) & (3)

Grade:12th pass

4 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
9 years ago
Photosynthesisis a process used by plants and other organisms to convertlightenergy, normally from thesun, into chemical energy that can be laterreleasedto fuel the organisms' activities. This chemical energy is stored incarbohydrate molecules, such assugars, which are synthesized fromcarbon dioxideandwater– hence the name photosynthesis. The oxygen part of the glucose formed comes from carbon dioxide.
Biswarup
15 Points
5 years ago
The oxygen in glucose comes from H2O and not at all from CO2. This was discovered by Cornelius Van Neil. This was a mis conception previously prevailing that oxygen in glucose comes from CO2 and was proposed by Senebier and was Wrong.
Ruben and Kamen (1941) confirmed that source of oxygen is H2O and not from CO2 and used radio isotopic O2 to proove this.
suji
14 Points
4 years ago
During Photosynthesis the oxygen in glucose comes from CO2.
During Photosynthesis the oxygen comes from H2O. 
suji
14 Points
4 years ago
 CO2.comes fromoxygen in glucose During Photosynthesis the 
During Photosynthesis the oxygen comes from H2O. 

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