CO2 acceptor molecule in mesophyll chloroplasts is PEP (phospho-enol pyruvate) and not RuBP. (a): Magnesium is important c6nstituent of chlorophyll, thus is found in all green plants and essential for photosynthesis. 80. (a): The C-4 plants have a characteristic leaf anatomy called kranz anatomy. Cytokinins are essential for cytokinesis though chromosome doubling can occur in their absence. Ethylene might be producing certain enzymes, essential for fruit ripening. The stem and a single branch constitute a statement to be judged True or False by the reader. What is the best reason for considering N.sylvestris and N.tabacum to be separate species? 58. The light spectrum of red and blue light are most effective in performing photosynthesis for growing algae. Capillary water fills the spaces between non- colloidal soil particles and forms films around them. Because of this relatively open arrangement of cells, the lenticels are regarded as structures permitting the entry of air through the periderm. MCQ (nerve and muscles) Choose the best ( √)answer: 1- The energy of muscle contraction is derived from the following except: a- ATP. Klinostat is employed in the study of. (d): Phytochrome is a bright blue or bluish green- pigment which was first of all isolated from plasma membrane of alga Mougeotias.Phytochrome has a light absorbing or light detecting portion (the chromophore) attached to small protein of about 1,24,000 daltons. There occurs covalent bonding of CO, to RuBP and the enzyme catalyzing this reaction is RuBP- carboxylase/oxygenase (Rubisco). Porphyrin is a cyclic tetrapyrrole structure, I having a magnesium atom in the centre. The main function of these bodies is to seal off the sieve tube element or sieve cell by bringing about the blockage of sieve plate. 35. (d): Phytochrome is the photoreceptive pigment. Physiology Multiple Choice Question Bank 15. Given on this page is a online quiz on the topic of Human Physiology. Auxin is a growth promoting phytohomone that results in cell division, cell enlargement and apical dominance. 40. Seed coats may contain relatively high concentrations of growth inhibitors that can suppress germination of the embryo. Multiple Choice Questions in Medical Physiology. (b): Potometer is an instrument used to determine the rate of transpiration. 108. 82. (a): The primary acceptor of CO2 is a 3 carbon compound phosphoenol pyruvic acid. Stratification is a process by which seeds are pretreated to simulated winter conditions so that germination may occur. Physiology MCQ Questions Answers Download PDF Physiology Sample Practice Set Physiology MCQ Download PDF Solved Questions Answers Practice Sample Set 1) Regarding somatomedin, which is true? 4 0 obj 33. PS-I consists of plenty of chlorophyll-a and very less quantity of chlorophyll-/?. MCQ-05: Plant Physiology Questions from CSIR Papers (Advanced – Set 1) @. MCQ ON ANIMAL PHYSIOLOGY CIRCULATION MCQ BIOLOGY. Within a week we will be adding more questions. 5.3K likes. It is a tropic movement, which is induced by light, when supplied unidirectionally. (b): C4 pathway was first reported in members of family Gramineae (grasses) like sugarcane, maize sorghum, etc.. During light reaction of photosynthesis, which of the following phenomenon is observed during cyclic phosphorylation as well as non-cyclic phosphorylation? Oxalis. 161. The first product formed after fixation of CO2 is 3-pliosphoglyceric acid. (c): Gibberellin is a hormone that replaces vernalisation. Calvin and his co-workers were able to formulate the complete metabolic path of carbon assimilation in the form of cycle which is called as Calvin cycle. In the case of the venus flytrap turgor pressure changes occur in which hydrogen ions are rapidly pumped into the walls of cells on the outside of each leaf in response to the action potentials from the trigger hairs. One has to note that both reaction centres types are present in chloroplasts of plants and cyanobacteria, working together to form an unique photosynthetic chain able to extract electrons from water, evolving oxygen as a byproduct. (b) it induces the differentiation of new shoots from the rootstock, (c) it frees axillary buds from apical dominance, (d) the apical shoot grows faster after pruning. 150. 139. 16. 73. WHAT ARE THE SYSTEMS OF THE HUMAN BODY 11 HUMAN BODY. 69. (b): Wavelengths between 400 and 700 nm, which comprise the visible range of electromagnetic spectrum are capable of causing photosynthesis. 74. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. Light reaction is associated with the grana of the chloroplasts. <> 23. This practice of removal of apical dominance is applied in tea gardens, hedges, rose gardens etc. 1. Chief source of Nitrogen for plants is nitrates of Ca and K. It is important for plants as it is a component of nucleic acids, proteins chlorophyll and cytochromes. 134. Share Your is the home of thousands of essays published by experts like you! (d): Growth hormones or phytohormones are defined as organic substances which are synthesized in minute quantities in one part of the plant body and transported to another part where they influence specific physiological processes. Which one of the following pairs, is not correctly matched? Shelf life of cut shoots and flowers is krolonged by employing the hormones. The ABA level decreases in the whole seed as their dormancy is broken. Mesophyll cells are connected with each other through plasmodesmata. Repeated washing and heavy rainfall removes such substances from the seed coat. Thus Utricularia, Drosera and Dionea are all insectivorous plants. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. c, Cyt. (a): Gibberellins promotes seed germination. 160. So leaf abscission is not associated with gibberellic acid but with abscisic acid. The C02 fixation during C4 pathway occurs in the chloroplast of. (a): The 1992 Nobel prize for medicine was awarded to edmond H. fischer and Edwin J. Krebs for their work concerning reversible protein phosphorylation as biological regulation mechanism. 130. Which one of the following statements about cytochrome P450 is wrong? (c): Gray spot diseases of oat is caused due to deficiency of manganese. 104. OversDrive Rakuten. (c): Diffusion pressure deficit is the reduction in the diffusion pressure of water in a system over its pure state. (d) involvement of PS I and PS II pigment systems. It is clear that the first acceptor of CO2 is Ribulose 1-5 diphosphate. (c): Nitrogen is the fourth most abundant element. 79. 87. Before reproductive stage there is too much elongation of internodes but there is less leaf formation. 45. (b): Phenyl mercuric acetate (PMA) results in reduced transpiration. 189. Section 391 of Code of Criminal Procedure, 1973 (Cr.P.C.) The phenomenon involved is. This is because of a relatively high concentration of auxin in the apical bud than in the lateral buds. Growth movements are caused by differential growth in different part of an organ. The process of photosynthesis involves two steps-. 135. This suppresses the action of ethylene which promotes senescence. (e): By employing C14 labelled carbondioxide 14CO2 in photosynthesis and observing the appearance of characteristics radiations in different reactions intermediates and product in different experiments. This entry of water in the cell develops in a cell turgor pressure, which exerts pressure on the cell membrane or on the cell wall. options in a question. 163. The apical dominance is due to interaction between auxin and cytokinin. The enzyme catalyzing this reaction is RuBP-carboxylase/ oxygenase (Rubisco). %PDF-1.5 (c): Emerson and Lewis worked on Chlorella and Calculated the quantum yield for different wavelengths. The reduction of CO2 to carbohydrates needs assimilatory powers, i.e., ATP and NADPH2. 56. Physiology is the scientific study of the normal function in living systems. The whole instrument is made of glass and is consisted I of a long tube, having a side tube, bent at right angles. Which is employed for artificial ripening of banana fruits? 18. (d): Iron is mainly available in the ferrous form and it is absorbed in the ferric form, also. Pain insensitive structure in the spine – Physiology MCQ. It leads to formation of 2 molecules of phosphoglyceric acid. Reception of pollen by stigma is called pollination. It soon gets converted into 2 molecules of 3-phosphoglyceric acid due to hydrolysis and dismutation. Thus transpiration pull is responsible for passive water absorption. A plant hormone used for inducing morphogenesis in plant tissue culture is. 171. These plants have tentacles, which are sensitive to the stimulus of touch. 138. 76. Labels: MCQ on Plant Physiology, mineral nutrition mcq, photosyntheis mcq, plant hormones mcq, Plant physiology mcq, respiration mcq Newer Post Older Post Home Classification of … DPD = OP-TP. M.D. With an increase in the turgidity of a cell, the wall pressure will be. (d) the primary fixation of CO2 is mediated via PEP carboxylase. Emerson observed that rate of photosynthesis declines in the red region of the spectrum. Primary ANZCA MCQ Bank - Update after July 2001 exam - Physiology - Update after July 2001 Exam from MCQs submitted by your colleagues. 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