Which of the following statements about photosynthesis is not true?

The statement that is not true about photosynthesis is "Plants can photosynthesize without an increase in dry weight." Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy stored in organic compounds such as sugars. This process occurs in specialized organelles called chloroplasts, which are found in the cells of the plant's leaves, stems, and sometimes roots. During photosynthesis, carbon dioxide and water are converted into glucose and oxygen, with the help of chlorophyll and other pigments that absorb light energy. The oxygen produced during photosynthesis comes from the splitting of water molecules, not the breakdown of water. And, photosynthesis does lead to an increase in dry weight, as the plant stores the energy in the form of organic compounds.