(a): In C4 plants, there are 2 carboxylation reactions, first in mesophyll chloroplast and second in bundle sheath chloroplast. Soyabean is a legume plant so it contains leghaemoglobin. 175. It seems to be involved in membrane permeability but its essentiality has not been proved. One set of the plant was grown at 12 hours day and 12 hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. DPD determines the direction of net movement of water. This practice of removal of apical dominance is applied in tea gardens, hedges, rose gardens etc. (c): Gibberellins play a role in the elongation of internodes in ‘rosette’ plants. 97. Because of this relatively open arrangement of cells, the lenticels are regarded as structures permitting the entry of air through the periderm. Share Your Essays.com is the home of thousands of essays published by experts like you! They cause apical dominance by promoting the growth of apical buds and suppressing the growth of axillary buds. OversDrive Rakuten. Stunted growth occurs due to deficiency of potassium. 74. Article shared by. 170. M.D. Cortex and pith are not structurally suitable for this purpose. 62. When the apex of shoot is removed, then the exogenous application of auxin promotes growth, this clearly indicates that growing apex, having meristamatic cells, is the site where endogenous auxins are present in sufficient amount; once the apex is removed the source of auxin is also removed. During this electron transport FAD and Fe of different cytochromes are successively reduced and oxidised and at certain points, enough energy is released which is used to bind ADP with ip to form ATP (figure). Glycolate induces opening of stomata in. 5. What will be the number of Calvin cycles to generate one molecule of hexose? Content Guidelines 2. (b): a-Naphthalene acetic acid (N A A) is a synthetic or exogenous auxin. Animal cells have pluriopotency which means the potential ability of a cell to develop any type of the cell in the animal body, e.g. Cut or excised leaves remain green for long if induced to root or dipped in. The whole instrument is made of glass and is consisted I of a long tube, having a side tube, bent at right angles. 26. 65. (a): Cytochrome P450 (CyP) is a host of enzymes that use iron to oxidise, often as part of the body’s strategy to dispose of potentially harmful substances making them more water soluble. These enzymes are synthesised under the direction of nucleic acids. Ca is the part of middle lamella, it stabilizes the structure of chromosomes. 160. When the insect enter the pitcher it is an external stimulus, so the closure of the lid is paratonic movement. 55. 121. Hatch” and Slack (1966) reported that a 4-C compound oxaloacetic acid (OAA) is the first stable product in C02 reduction process. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Anatomy & Physiology Textbook , MCQ & Test Bank (Package Name: com.quizover.app.course.col11496) is developed by QuizOver.com and the latest version of Anatomy & Physiology Textbook , MCQ & Test Bank 2.1.1 was updated on March 20, 2018. (a): Sulphur is present in all the cells of the body in association with proteins made of sulphur containing amino acids, viz., cystine, cysteine and methionine. File name Physiology MCQ - Renal.pdf File Size 163 Kilobytes File Type pdf (application/pdf) Created Date Thursday, 21 July 2011 Owner Ben Mckenzie. A P-Protein body are assigned some in the translocation of food material in the sieve tubes but is not universally accepted. 138. This oxidation takes place under the influence of high light intensity. Anaesthesia UK FRCA: A site for anaesthetists in training. 143. Biology Question Bank – 189 MCQs on “Plant Physiology” – Answered! This hormone is transmitted to the growing point where the flowering occurs. 85. It offers over a 1000 Physiology MCQs with answers being referenced to the main textbook. Hence only PS-I produces NADPH2. This is an appropriate way to absorb CO2 through open stomatas at night, when transpiration stress is low, and conserve water during the heat of the day. is decreased. (c): Type I photosystems use ferredoxin like iron- sulphur cluster proteins as terminal electron acceptors, while type II photosystems ultimately shuttle electrons to a quinone terminal electron acceptor. and hence increases their D.P.D. Iron is constituent of cytochrome and haemoglobin. Auxin gets uniformly distributed on all sides and, hence the stem grows horizontally forward. 56. In C4 cycle, CO2 combines with phosphoenol pyruvic acid to form oxaloacetic acid. Plant Physiology Multiple Choice Questions and Answers for competitive exams. Leaf fall can be prevented with the help of. 99. GA is Giberrellic acid cause’s rapid elongation growth. RESPIRATORY. It is an activator in the enzyme tryptophan synthetase. Water potential is equal to (a) T s + O.P. c 2- The frequency needed to produce tetanus: a- is increased by cooling. The lower CO2 compensation points in C4 than in C, species arise from the much lower photorespiratory release of CO2 by C4 plants. Hormone responsible for senescence is. or S.P. 162. The ripening on demand can be induced in these fruits by exposing them to normal air containing about 1 ppm of ethylene. These jaws interlock to trap the insect that enters in it. Given on this page is a online quiz on the topic of Human Physiology. The carbon dioxide acceptor in Calvin cycle/ C3-plants is. Some may gauge your conceptual understanding; others might test your practical implications. The twinning of tendrils around a support is a good example of. 161. 67. 168. NADP is a coenzyme which is reduced to NADPH2 the hydrogen required for the formation of NADPH9 comes from the breaking of water molecule. (b): Addition of CO2 to any compound is called carboxylation. Hygroscopic water is present in the form of thin films around the soil particles and it is also not available to the plants under normal condition but it may be available under adverse conditions. NAA prevents formation of this layer and so it prevents fall of leaf or fruit. Repeated washing and heavy rainfall removes such substances from the seed coat. (c): Movement of water always occurs from low DPD to high DPD. 155. 62. Cytokinin is a growth promoting phytohormone that causes cell division, morphogenesis and seedling growth. If cytokinin to auxin ratio is low, then root formation takes place but if the ratio of cytokinin to auxin is high, then, there is formation of meristematic cells in the callus. They are also regarded as short night plants, (a) obtain energy from radiations and hydrogen from organic compounds, (b) obtain energy from radiations and hydrogen from inorganic compunds. (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. MRCPass com MRCP part I success. Endocrinology Mcq … Prep for a quiz or learn for fun! Temperature, particularly the low temperature treatment induce flowering. In this the leaf lamina is modified to form a pitcher and leaf apex forms a coloured lid. th,���H#��Uͱ *8F��O��o î�ڛ���,�BZ#�. Which one increases in the absence of light? (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. It is involved in the synthesis of indole-acetic acid in plants. Which combination of gases is suitable for fruit ripening? Roots of which plant contains a red pigment which have affinity for oxygen. Which of the following is not caused by deficiency of mineral nutrition? MCQ Kidney . Which one of the following elements is almost non­essential for plants? Phototropism means growth of plants in response to light and geotropism means growth of plants towards gravity. (d): Last step of aerobic respiration is oxidation of reduced co-enzymes, i.e., NADFL and FADH: by molecular oxygen through FAD, CoQ (ubiquinone). In photosynthesis energy from light reaction to dark reaction is transferred in the form of. The plants, bending towards the source of light are called positively phototropic. 8. The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is. All other like Zn, Cu and Mn are micronutrients of plants. Vernalization means ability of low temperature to convert winter cereal into spring cereal as a result of satisfaction of their low temperature requirement. 29. Physiology Multiple Choice Question Bank 15. (b): Zelitch (1963) suggested that glycolic acid is formed in the guard cells. 116. Klinostat comprises a disc with pot which is rotated by an axial rod with the help of a motor. (d): Anthesis is the process of opening floral buds. Under which one of the following categories will you place this plant? 150. In the shoot tips auxins are produced. 131. Which element is located at the centre of the porphyrin ring in chlorophyll? It has a light absorbing or light detecting portion (the chromophore) attached to small protein of about 1,24,000 daltons. 75. Physiology MCQ Bank. 14. Physiology MCQ Bank: PRactice thousands of High Yield MCQs from different Post graduate Medical entrance examinations... Jump to MCQs from AIPGMEE and AIIMS exams with Explanations. ‘The law of limiting factors’ was proposed by. Low temperature, 0°C to 10°C or 18°C – 22°C (according to species) treatment of certain species for a specified period for the induction of ability to promote flowering is called vernalisation. In calculating the shunt fraction, the following need to be measured or estimated: a) mixed venous oxygen content b) pulmonary end-capillary oxygen content c) arterial oxygen content d) alveolar partial pressure of oxygen e) haemoglobin concentration 2. 174. 6. In passive water absorption transpiration pull is responsible for absorption of water. (d): The empirical formula of chlorophyll – a molecule is CssH-^Oj^Mg. (ii) Presence of impermeable (impervious) seed coat to H20, e.g. Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone. Read 8 reviews from the world's largest community for readers. If you like to contribute any questions (can be the stem or any parts of the questions) you remember from Part I MRCOphth, please e-mail me at chuaoxford@hotmail.com 104. (a): Auxins are well known to promote elongation of stem and coleoptile. (c): P-proteins (Phloem proteins) are components found in large amounts in phloem sieve tubes. 137. 69. As a result, stomatal aperature closes. b- muscle glycogen. In a few photosynthetic bacteria other kinds of chlorophyll, bacteriochlorophylls, occur. Carotenoids are lipid compounds and they are yellow, orange, purple etc. (c): Calcium is an essential macronutrient for plant growth. It is involved in the perception of photoperiodic stimuli controlling flowering and other morphogenetic phenomenon in plants. This statement regarding enzyme inhibition is correct (a) non-competitive inhibitors often bind to the enzyme irreversibly This led to an alternative pathway of C02 fixation which is known as Hatch and Slack’s cycle or C4 cycle. (b): Giberellins helps in the reversal of dwarfism in many genetically dwarf plants. and plays a role. Part I MCQs Bank; More questions on the past topics can be found in Passing the MCQs in MRCOphth Part I available from the BMJ Bookshop. Glycolate formed gives rise to carbohydrates. If by radiation all nitrogenase enzyme are inactivated, then there will be no, (c) conversion from nitrate to nitrite in legumes. Assimilatory powers (ATP and NADPH2) are mainly produced in this light reaction. 1. It occurs mainly through xylem. When the apex containing auxin is removed or decapitation is done, then axillary buds show their growth, this is because the apical dominance is removed. The stem and a single branch constitute a statement to be judged True or False by the reader. 169. Abscisic acid inhibits the K+ uptake by guard cells and promotes the leakage of malic acid. 91. The pull or tension is removed only when water is absorbed through root hair and this is passive water absorption. 25. 158. 90. 123. This decline in photosynthesis is called “Red drop”. (b): A very efficient converter of solar energy with net productivity of 2-4 kg/m2 or more is sugarcane, maize which are C4 plants others are C3 plants. 24. 39. There are two photochemical complexes, known as photosystem I and II. The electron is now transferred to a non-heme iron protein called ferrodoxin (Fd) from which electron is transferred to NADP’ intermediate protein electron carrier ferrodoxin- NADP reductase. 32. Xylem plays an important role in conduction of water. It is the factor which is present in minimum amount. Guttation occurs when transpiration rate is very low as compared to rate of water absorption, due to this, root pressure is developed and water is pushed out through specialized pores at vein endings called hydathodes therefore guttation is not due to the activity of hydathodes but due to root pressure. If solutes are added to water its potential becomes less than that of pure waters is expressed as a negative value. 109. 1 0 obj 'Physiology Multiple Choice Question Bank April 29th, 2018 - Physiology Multiple Choice Question Bank Primary Exam for FANZCA July 2001 Update v3 02 Primary ANZCA MCQ Bank Update after July 2001 exam' 'Oxford University Press Online Resource Centre May 2nd, 2018 - Chapter 21 Multiple Choice Questions Instructions Answer The Following Questions And 173. Download Full Book 100 Important Biology Solved MCQ's 41 MCQs of Fungal Systematics 42 Molecular Biology MCQs 43 Multiple choices questions for Research methodology 44 MYCOLOGY MCQs 45 Physiology Of… The degradation of the seed coat is called scarification. 64. (b): Potometer is an instrument or apparatus with the help of which, rate of transpiration can be measured. 114. The physiological mechanism for flowering is controlled by 2 factors: photoperiod or light period, i.e., photoperiodism and low temperature, i.e., vernalization. Thus ATP synthesis occurs in both PS-I and PS-II. 165. 10. Minerals absorbed by root move to the leaf through. (d): Stomata are tiny pores found in the epidermis of leaves and other soft aerial parts. What will be the effect on phytochrome in a plant subjected to continuous red light? Ethylene is produced in mature but unripe fruits and then it initiates a chain of reactions that finally lead to ripening. The enzyme catalyzing this reaction is RuBP-carboxylase/ oxygenase (Rubisco). 48. The ability of the Venus Flytrap to capture insects is due to, (c) a passive process requiring no special ability on the part of the plant. Vernalization is application of cold treatment to plants to affect flowering. These short solved questions or quizzes are provided by Gkseries. 75. 21. The reduction of CO2 to carbohydrates, needs assimilatory powers, i.e., ATP and NADPH,. They open their stomatas at night, fix carbon dioxide into organic acids in the dark, and close their stomatas during the day. Biology Question Bank – 39 MCQs on “Kingdom Monera” – Answered! Answer: (b) 2. (a): The loss of water through water stomata (hydathodes) is called as guttation. It has tadpole like configuration. Here electrons are not cycled back and are used in the reduction of NADP to NADPH2. 39. 131. 7. In this cycle, CO, acceptor molecule is RuBP or RuDP (i.e., Ribulose 1, 5-biphosphate or Ribulose 1, 5- diphosphate). 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? 69. Here water is utilized and O2 evolution occurs. a)Reduced glucose oxidation in fat b) Increases chondrogenesis c) Activity is increased in protein deficiency d) Activity is increased by glucocorticoids 2) Atmospheric pressure is important in the …
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