Explanation:
In aquatic ecosystems, dissolved oxygen decreases as temperature increases. Similarly, the dissolved oxygen would increase as the temperature fell.
Further Explanation:
Aquatic green plants and algae contain chlorophyll, a specialized compound which facilitates the conversion of light energy to energy stored in carbohydrates. The oxygen produced is dissolved in the surrounding water and as dissolved oxygen.
Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. Particles of light, and water is used as a reducing agent.
6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy
Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.
Respiration and photorespiration both utilize oxygen for;
- the production of ATP via the oxidization of pyruvate;
- and the oxygenation of the molecule Ribulose 1,5-bisphosphate (RuBP), an organic molecule also used in photosynthesis, to form 3-PGA + phosphoglycolic acid,
The rate of photosynthesis and respiration would both be lower at lower temperatures. This is because the activity of enzymes involved in both processes decreases; less oxygen used from respiration means there is less loss of dissolved oxygen as very little is produced as photosynthetic waste.
Learn more about Photosynthesis at brainly.com/question/4216541
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Learn more about cellular respiration at brainly.com/question/11203046
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