Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport? Auxin is the only plant growth hormone known to be transported polarly. (c): Bladderwort or Utricularia is a rootless free floating insectivorous plant. 65. It kills weeds perhaps by over stimulated root growth. (d): Photosynthetic rates are enhanced not only by increased irradiance levels but also by higher CO2 concentrations. (c): Phytochrome is a photoreceptor molecule which mediates several developmental and morphogenetic responses of plants to light. These plants have tentacles, which are sensitive to the stimulus of touch. Sulphur is an important nutrient for optimum growth and productivity in. options in a question. <> It is clear that the first acceptor of CO2 is Ribulose 1-5 diphosphate. There are two methods of scarification as mechanical scarification and chemical scarification. Oxaloacetic acid is a 4-C compound and is the first stable product so this pathway is known as C-4 cycle. B 210 . It is a constituent of ferredoxin and some of the lipids present in chloroplasts. Well you can also check list of Online […] Here water is utilized and O2 evolution occurs. Thus ATP synthesis occurs in both PS-I and PS-II. Most of them absorb light of voilet and blue range. Further it has enzyme PEP-carboxylase. (d) in long day plants under short day conditions. 130. So in chloroplasts of mesophyll cells – Phosphoenol pyruric acid + Carbondioxide. It was first studied by Garner and Allard (1920).- Short day plants (SDP’s) flower in photoperiods less than critical day length, e.g., Nicotiana tabacum, Glaycine max (Soybean), Xanthiam strumarium. 27. Hence, at high atmospheric humidity transpiration rate is low. P-Protein bodies and callose form blocking plugs. This led to an alternative pathway of C02 fixation which is known as Hatch and Slack’s cycle or C4 cycle. (a): Richmond and Lang, 1967 observed that degradation of protein and chlorophyll was delayed in the detached leaves, if there was cytokinin in the medium. Sundew or Drosera is another insectivorous plant which has leaves that are green and bear many glandular hairs or tentacles having shining droplets to attract the insects and later trap them. So leaf abscission is not associated with gibberellic acid but with abscisic acid. It needs 18 ATP and 12 NADPH2 molecules to produce one molecule of glucose. Enzyme involved is RuBP- carboxylases which in normal O2/CO2 conc. 100. The first step for initiation of photosynthesis will be, (b) excitement of chlorophyll molecules due to absorption of light, 115. The additional CO2 decreases photorespiration by increasing the ratio of CO2 to O2 reacting with rubisco. b- is decreased in red muscles. Soyabean is a legume plant so it contains leghaemoglobin. You can check all apps from the developer of Anatomy & Physiology … How does pruning help in making the hedge dense? Simple, Ganong’s, Bose’s and Farmer’s potometer. 188. 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. (d): Plants require a day length or light period for flowering, this light period is called as photoperiod. Water potential is equal but opposite in sign to D.P.D. So, cell A having lower DPD, water will move from cell A to B. c, Cyt. If a tree flowers thrice in a year (Oct., Jan. and July) in Northern India, it is said to be, (c) photosensitive but thermo-insensitive. (a): Apical dominance is the phenomenon by which presence of apical bud does not allow the nearby lateral buds to grow. Tail is consisted of phytol alcohol and it is attached with one of the pyrrole | rings. Water potential is equal to (a) T s + O.P. Rosette plant of sugarbeet when treated with GA, undergoes marked longitudinal growth of axis. It means that the cell has no further capacity to absorb any water. '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 (d) removal of apical dominance and promotion of lateral meristem. If the growing plant is decapitated, then. 162. 189 Questions with Answers and Explanations on Plant Physiology for Botany Students. Mo is responsible for nodulation in legumes. (d): The core metal of chlorophyll is Mg. Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. It is involved in the perception of photoperiodic stimuli controlling flowering and other morphogenetic phenomenon in plants. increases in sub-stomatal cavities —» ABA participation K+ ions exchange stopped —» K+ ions transported back into subsidiary cells —> Decreased pH —> Starch synthesized in guard cells —» Decreased O.P. 56. 52. It offers over a 1000 Physiology MCQs with answers being referenced to the main textbook. Plant Physiology Multiple Choice Questions and Answers for competitive exams. The enzyme is phosphoenol pyruvate carboxylase. Some roots show this response as in sunflower. Thus passive salt absorption will increase. It might be increasing permeability of membranes of cells in the tissues before ripening of fruits. 93. In photosynthesis energy from light reaction to dark reaction is transferred in the form of. 28. Ca is the part of middle lamella, it stabilizes the structure of chromosomes. It is a process in which a plant responds to the relative durative duration of daily light and dark periods. These are called echard or unavailable water. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology Question Bank – 189 MCQs on “Plant Physiology” – Answered! These short solved questions or quizzes are provided by Gkseries. Bending away from the source of light is called negative phototropism. It was observed that the quantum yield falls when the light of wavelengths more than 680 or 690 nm are supplied. c 2- The frequency needed to produce tetanus: a- is increased by cooling. It occurs in the form of minerals as hornblende, magnetite, biotite etc., from where it is released by weathering. A plant hormone used for inducing morphogenesis in plant tissue culture is. (d): Iron is mainly available in the ferrous form and it is absorbed in the ferric form, also. 40. 5 / 132. It involves production of two ATP molecules, no NADPH2 is produced. At night time, the C02 released during respiration accumulates. Which of the following hormones can replace vernalisation? These enzymes hydrolyze the starch stored in endosperm into glucose which is | necessary for use both as a respiratory substrate and as a source of carbon skeletons of the molecules needed for growth. File Type PDF 1000 Mcq Bank Questions Answers ... 1000 MCQ Bank Questions | Human Tooth | Tooth Enamel 189 Questions with Answers and Explanations on Plant Physiology for Botany Students. Biology Question Bank – 39 MCQs on “Kingdom Monera” – Answered! Copper is present in haemocyanin. Greatest producers of organic matter are. (c): Chlorophyll-a occur in all photosynthesizing plants except bacteria. (a): Gibberellins promotes seed germination. 83. At high CO2 concentrations, high irradiance levels increase photosynthesis more than at low CO2 concentrations, and that to saturate photosynthesis a high than at low irradiance levels. Pigment System I is relatively very weakly fluorescent The closing and opening of the leaves of Mimosa pitdica is due to, 111. Hatch and Slack (1966) reported that a 4-C compound oxaloacetic acid (OAA) is the first stable product in CO2 reduction process. (ii) Light independent these or dark reaction. (c): Stomatas of most plants open at sunrise and close in darkness to allow the entry of CO2 needed for photosynthesis during the daytime. Some lobes of the leaves become modified into bladder like structures for catching insects. (c): Movement of water always occurs from low DPD to high DPD. A P-Protein body are assigned some in the translocation of food material in the sieve tubes but is not universally accepted. Azolla contain nostoc andcmabaena (BGA) in its leaves cavities which perform nitrogen fixation. It takes place in stroma portion of the chloroplast and is independent of light i.e., it can occur either in presence or in absence of light provided that assimilatory power available. 10. (d): For a long time, Calvin cycle (C3 cycle) was considered to be the only photosynthetic pathway for reduction of CO2 into carbohydrates. The growth of culture was most dramatic when the liquid endosperm of coconut, also known as coconut milk, was added to the culture medium. The absorption of water by the solid particles of an adsorbent causing it to enormously increase in volume without forming a solution is called imbibition. Copper is absorbed on the clay particles as divalent cations, from where it can be absorbed by the plants by exchange mechanism. The grana lamellae are paired to form sac like structures and form thylakoids. Chlorophyll-a. Which of the following propagates through leaf- tip? A pigment which absorbs red and far-red light is. 102. Photosynthetic Active Radiation (PAR) has the following range of wavelengths. (iv) Presence of germination inhibitors like ABA (abscisic acid) and phenolics, etc., in seed coat or fruit pulp, e.g., in tomoto, inhibitor is present in fruit pulp. There occurs covalent bonding of CO2 to RuBP and the enzyme catalyzing this reaction is RuBP- carboxylase/oxygenase (Rubisco). In the mammalian kidney, what causes water to be reabsorbed in the descending limb of the loop of Henle? 77. Multiple Choice Questions on Endocrine System MCQ. 98. just above normal atmospheric concentrations, even at high irradiance levels in which demands for CO2 are greatest.
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