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1) The principal difference, however, between photosynthesis and respiration is that photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell.
2) The first stage of aerobic respiration is glycolysis in which glucose molecule is broken down into two molecules of pyruvic acid. Thus, pyruvic acid is the intermediate product of aerobic respiration.
3) the absence of transpiration. During night hours, transpiration is negligible and evaporation is very low. Therefore, root pressure is the major force for movement of water through plants during night, so its maximum effect can be observed during night.
4) The ventricles of the heart have thicker muscular walls than the auricles. This happens because the blood from the ventricles of the heart is pumped out of the heart at greater pressure compared to the auricles. The ventricles are responsible for pumping blood to various parts of our body.
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