TRANSPIRATION AND ENZYMES ASSIGNMENT

1	Total amount of water transpired by a typical plant is 5% of absorbed water 50% of absorbed water 95% of absorbed water 90% of absorbed water Ans:95% of absorbed water
2	In natural conditions, none of the living cells of the following plant shows transpiration Ranunculus Hydrilla Trapa Opuntia Ans:Hydrilla
3	Developed Pepo fruit shows stomatal transpiration lenticular transpiration Bark transpiration Cuticular transpiration Ans:lenticular transpiration
4	Identify the plant that shows relatively more rates of cuticular transpiration Calotropis Tribulus Opuntia Casuarina Ans:Tribulus
5	These aspects are integral parts of SPAC Absorption of water Ascent of sap Transpiration All Ans:All
6	In Cobalt chloride paper method upon absorbing moisture, The pink paper turns blue The Blue paper turns pink The red paper turns pink The blue paper turns red Ans:The Blue paper turns pink
7	Transpiration is a Biophysical process Biochemical process Physical process Non-biotic chemical process Ans:Biophysical process
8	Match the following A - IV, B - III, C - II, D - I A - IV, B - III, C - I, D - II A - III, B - IV, C - II, D - I A - II, B - III, C - IV, D - I Ans:A - IV, B - III, C - II, D - I
9	[A]: Leaves do not show Lenticular transpiration [R]: Leaves do not form periderm Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
10	Guard cells differ from other epidermal cells in I. Size II. Shape III. Having chloroplast IV. Unevenly thickened wall All All except IV All except I All except II Ans:All
11	During transpiration water is evaporated mainly at Cytoplasm of mesophyll cells cell walls of guard cells Cytoplasm of subsidiary cells Cell walls of mesophyll cells Ans:Cell walls of mesophyll cells
12	Potamogeton is described as Astomatous because It has no stomata it has only one stoma it has functionless stomata it is hydrophyte Ans:it has functionless stomata
13	The following accounts for 1-2%. I. Cuticular transpiration II. Lenticular transpiration III. Stomatal area per unit area of leaf IV. Area of guard cell with respect to area of normal epidermal cell I and II II and III III and IV I, II, III Ans:II and III
14	Subsidiary cells differ with other epidermal cells in I. Size II. Shape III. Position IV. Protoplast contents All All except IV All except III and IV All except I Ans:All except IV
15	[A]: Stoma is turgor operated valve [R]: When subsidiary cell is turgid, stoma is opened and when accessory cell is flaccid the stoma is closed. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
16	The opening and closing of stomata is controlled by I. Size of guard cells II. Shape of guard cells III. Metabolic changes in the guard cells IV. ABA levels in the guard cells I, II II, III, IV I, II, III I, II,III, IV Ans:I, II,III, IV
17	[A]: All scotoactive plants are xerophytes. [R]: Acacia is a scotoactive plant. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
18	During opening and closing of stomata, these ions can not move between the guard cells and subsidiary cells in both active and passive methods K+ Cl- Malate H+ Ans:Malate
19	Stomatal closure is favoured by I. High CO2 conc. II. High ABA conc. III. High malate in guard cells I and III I and II II and III I, II, III Ans:I and II
20	K+ pump hypothesis for stomatal movement was proposed by Salisbury Levitt Bowling Barnes Ans:Levitt
21	During opening of stomata, the pH of the guard cells enormously decreases decreases remains unchanged Increases Ans:Increases
22	Choose the correct statement During stomatal opening, there is more efflux of Cl+ from guard cells During stomatal opening there is more influx of K+ into subsidiary cells During stomatal closure, there is more efflux of Malate ions into subsidiary cells Stomatal closure is favoured by high influx of K+ into guard cells. Ans:During stomatal closure, there is more efflux of Malate ions into subsidiary cells
23	The stomatal index of a plant is 0.025. Number of epidermal cells in a unit area is 1000. What must be the stomatal frequency of the plant. 25 50 13 15 Ans:25
24	Study the following with respect to transpiration and choose the correct match A - III, B - I, C - II, D - IV A - III, B - IV, C - I, D - II A - II, B - I, C - IV, D - III A - III, B - IV, C - II, D - I Ans:A - III, B - IV, C - II, D - I
25	Study the following table and choose the correct combination I and II II and III III and IV I and IV Ans:I and II
26	[A]: Transpiration is an active pcrocess [R]: ATP are used during effulux of H+ from guard cells Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is false but R is true
27	Match the following A - III, B - V, C - IV, D - I A - III, B - V, C - II, D - I A - V, B - IV, C - I, D - II A - III, B - IV, C - II, D - V Ans:A - III, B - V, C - IV, D - I
28	Photo active stomata are seen in Opuntia Acacia Bryophyllum Aloe Ans:Acacia
29	During stomatal closure, there is more entry of the following ions into subsidiary cells K+ H+ Cl- Malate Ans:H+
30	Influence of the following factors is inversely proportional to the rate of transpiration I. light II. Atmospheric humidity III. Shoot – Root ratio IV. Temperature II and III I and II III and IV I and III Ans:II and III
31	Transpiration does not help the plant in Transport of minerals Active absorption of minerals Transport of sugars through Phloem Passive absorption of minerals Ans:Active absorption of minerals
32	[A]: Plastic emulsions are antitranspirants [R]: They selectively show their influence on guard cells Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
33	[A] : Carbonic anhydrase is a metalloenzyme. [R] : It has Zn as its apoenzyme. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
34	Study the following and identify the correct match Enzyme Cofactor A. Catalase I) Mg2+ B. Cytochrome II) Mo oxidase C. Hexokinase III) Mn2+ D. IAA oxidase IV) Cu2+ V) Fe2+ A - V, B - IV, C - I, D -III A - IV, B - III, C - I, D -II A - IV, B - IV, C - I, D -III A - V, B - IV, C - II, D -III Ans:A - V, B - IV, C - I, D -III
35	The cofactor of nitrate reductase is Mn Mo Mn Mg Ans:Mo
36	Peroxidase has Only apoenzyme Apoenzyme and coenzyme Apoenzyme and metallic cofactor Apoenzyme and prosthetic group Ans:Apoenzyme and prosthetic group
37	The enzyme that converts malic acid to oxaloacetate is a/an Oxidoreductase Transferase Hydrolase Lyase Ans:Oxidoreductase
38	Study the following and identify the correct groups i and iv ii and iii i and iii ii and iv Ans:i and iii
39	The coenzyme of malate dehydrogenase is derived from the vitamin Thiamine Pentothenic acid Niacin Vitamin B6 Ans:Niacin
40	Choose the enzyme that also shows hydrolysis activity but doesn’t belong to hydrolases Arginosuccinase Glutamine synthetase Peptidase Hexokinase Ans:Glutamine synthetase
41	The enzyme glucose-6-phosphotransferase belongs to i) Class 2 ii) Subclass 7 iii) Sub-subclass 1 iv) Subclass 2 i, ii, iii ii, iii, iv only i and ii only ii and iii Ans:only i and ii
42	[A] : Co-enzyme A is derived from vitamin A. [R] : Co-enzymes are mostly derived from vitamins. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is false but R is true
43	The energy for the activation of hexose glucose to form trioses is provided by Light Heat ATP NADH2 Ans:ATP
44	Amount of energy required for the formation of 5 molecules of oxygen from H2O2 in the presence of catalase is 180 K.cal 1800 K.cal 55 K.cal 27.5 K.cal Ans:180 K.cal
45	Lock and key model best explains the following property of enzymes Lowering activation energy Specificity pH sensitivity Heat sensitivity Ans:Specificity
46	[A] : Cyanides can inhibit enzymatic activity. [R] : Cyanides compete with the substrate for active site of the enzyme. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
47	Malonic acid shows structural similarity with Fumaric acid Malic acid Succinic acid Glycolic acid Ans:Succinic acid
48	The following is an allosteric enzyme Enzyme that forms glucose-6-PO4 Enzyme that forms oxaloacetic acid from malic acid Enzyme that converts aspartic acid into oxaloacetic acid Catalase Ans:Enzyme that forms glucose-6-PO4
49	This is cofactor-less enzyme Peroxidase Pepsin Catalase Carbonic anhydrase Ans:Pepsin
50	Match the following A. Lock and key model I) Koshland B. The term Allosteric II) J.B.S. Haldane C. Enzyme classification III) Emil Fisher D. Treatise on enzymes IV) Monad V) IUB A - III, B - V, C - IV, D - I A - IV, B - V, C - I, D - II A - III, B - IV, C - V, D - II A - III, B - IV, C - V, D - I Ans:A - III, B - IV, C - V, D - II
51	Most of the enzymes show their maximum activity at pH 5 6 8 7 Ans:7
52	[A] : An enzyme is a protein. [R] : Enzymes cannot utilize proteins as their substrates. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
53	Lock and Key model was proposed by Pasteur Kolshland E. Fisher Woods Ans:E. Fisher
54	This is allosteric modulators Glucose Glucose mono phosphagte Malonic acid Cyanide Ans:Glucose mono phosphagte
55	Amount of energy required for the activation of Hydrogen peroxide to form Water and Oxygen is 1600 cal 1800 cal 6000 cal 18000 cal Ans:18000 cal