Energy. organic compound (malic acid) accumulates throughout the night and is decarboxylated during the day to produce C02. Plant mannans have β(1-4) linkages, (2S,3S,4R,5S,6S)-6-[(2R,3R,4R,5S,6R)-6-[(2R,3S,4R,5S,6R)-5-acetamido-6-[(2R,3R,4R,5S,6R)-4-acetyloxy-6-[(2R,3R,4R,5S,6R)-4-acetyloxy-6-[(2R,3R,4R,5S,6S)-4-acetyloxy-5-hydroxy-2-(hydroxymethyl)-6-methoxyoxan-3-yl]oxy-5-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-5-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4-acetyloxy-5-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4-acetyloxy-3-[(2R,3S,4R,5R,6R)-4-acetyloxy-5-[(2R,3S,4R,5R,6R)-4-acetyloxy-3-hydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxy-3-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-5-hydroxyoxane-2-carboxylate, Acemannan is a constituent of leaf juice of Aloe. NEET Botany Photosynthesis in Higher Plants questions & solutions with PDF and difficulty level Most C4 plants have a unique Kranz structure and distribute C4 enzymes efficiently among mesophyll and bundle sheath cells. Now, the processing of A. vera gel, derived from the leaf pulp of the plant, has become a big industry worldwide due to the application in the pharmaceutical and cosmetic industries. v. They have greater productivity of biomass. (a)    Pyruvate                                         Ans: The fixation of 6 molecules of C02 and 6 turns of the cycle are required for the removal of one molecule of glucose from the pathway. Isolation of many compounds with diverse structures has been done, from both, the exudate arising from the cells adjacent to the vascular bundles and the central parenchyma tissue of A. vera leaves. In turn, the rate of p-glycollate production will control the rate of photorespiratory loss of carbon dioxide via the further metabolism of glycollate in the C2 pathway. Thus, conflicting results have been reported for the same plant and the same genes. If you have any query regarding NCERT Exemplar Class 11 Biology Chapter 13 Photosynthesis in Higher Plants, drop a comment below and we will get back to you at the earliest. b. Thus, we find that C 4 plants undergo carboxylation twice, ie in mesophyll, through the C 4 Cycle and in bundle sheath cells via the Calvin Cycle. Do they receive qualitatively and quantitatively the same light? (a) Iron (b) Copper (c) Magnesium (d) Zinc What is the role of this enzyme in proton gradient development? What is their role in photosynthesis? The mesophyll cells of leaves (2002) found no decrease in nitrogen concentrations under elevated CO2 in the seeds of legumes, compared to an average decrease of 14% in the seeds of nonlegume C3 plants. iii. Cotrufo et al. Two factors contribute to the reduction of photorespiration in C4 and C3–C4 intermediates. Sangeeta Bajpai, in Synthesis of Medicinal Agents from Plants, 2018. (b) Lumen of thylakoid Loosely arranged mesophyll cells lie between the bundle sheath and the leaf surface. Q17. Ans: Photosynthesis and respiration are related to each other as. Q3. Q1. Fig. PEP carboxylase, which is located in the mesophyll cells, is an essential enzyme in C 4 plants. The reaction that is responsible for the primary fixation C02 is catalysed by Q3. Cyanobacteria and some other photosynthetic bacteria do not have chloroplasts. The Bundle sheath defective2 (Bsd2) gene is required for ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) accumulation in maize. (b)     Glyceraldehyde-3-phosphate Zoe M. Harris, ... Gail Taylor, in Greenhouse Gas Balances of Bioenergy Systems, 2018. The correct sequence of flow of electrons in the light reaction is a. 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