PLANTS WATER RELATIONS ASSIGNMENT

1	Diffusion is the phenomenon shown by I. Solids II. Liquids III. Gases I and II All except II II and III All Ans:All
2	This is an example for diffusion Uptake of CO2 during photosynthesis Uptake of O2 by plants from atmosphere Uptake of CO2 by plants during night time by plants Release of O2 by plants during night by plants Ans:Uptake of CO2 during photosynthesis
3	Match the following with respect to Bryophyta List – I List – II A) Hydroids I) Capsule B) Protonema II) Rhizoids C) Spore production III) Cauloid D) Zooidogamy IV) Young gametophyte V) A - III, B - IV, C - I, D - V A - III, B - I, C - IV, D - V A - IV, B - III, C - II, D - I A - III, B - V, C - I, D - II Ans:A - III, B - IV, C - I, D - V
4	[A]: Proteins show more imbibition than cellulose [R]: Protins are soluble in water but not cellulose 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
5	Imbibition of water is shown by all solutes Solvents gases Hydrophilic colloids Ans:Hydrophilic colloids
6	Identify the correct sequence of substances that show gradual increase in Imbibition Cotton fibre; Pea seeds; Paddy grains Paddy grains; Cotton fibre; Soybean seeds Soy bean seeds; Cotton fibre; Paddy grains Cotton fibre; Paddy grains; Soybean seeds Ans:Cotton fibre; Paddy grains; Soybean seeds
7	Modified roots that absorb water by Imbibition are seen in Amorphophallus Brassica oleracea var. gangyloides Bulbophyllum Trapa natans Ans:Bulbophyllum
8	In Potato osmoscope experiment, the structure of Potato that behaves as selectively permeable membrane is Middle lamellum of Parenchyma cells Periderm of the tuber Primary walls of Parenchyma of cut end of Potato tuber Cell membranes of Storage parenchyma of Potato tuber Ans:Cell membranes of Storage parenchyma of Potato tuber
9	Choose the correct statements with respect to Thistle funnel experiment I. There is gradual increase in hydrostatic pressure in the Thistle funnel II. Water of the beaker continuously flows into the thistle funnel as there is no solute in the beaker and there is solute in the thistle funnel. III. The Y of the solution present in the thistle funnel gradually increases. IV. The Π of the thistle funnel gradually increases I and II I and III II and III III and IV Ans:I and III
10	A cell in evident plasmolysis state has the following condition Y = Ρ Π = Ρ Y= 0 Y= Π Ans:Y= Π
11	Morphologically similar cells A, B, C and D are kept respectively in solution P having 1% Sucrose solution, Q with 2% sucrose solution, R with 3% sucrose solution and S with 5% sucrose solution. Cell D has shown incipient plasmolysis and the other cells have not shown any signs of Plasmolysis. Choose the correct statements among the following. I. Cell A is isotonic to solution P II. Cell B is isotonic to solution Q III. Cell C is isotonic to solution R IV. Cell D is hypotonic to solution S All except IV All except III All except I and II All except III and IV Ans:All except I and II
12	During the plasmolysis of a parenchyma cell there is decrease in the I. Size of Plant cell II. Size of protoplast III. Amount of cytoplasm IV. Vacuole I and II II and III II and IV I and III Ans:II and IV
13	Plasmolysis phenomenon helps the growing plant in resisting the bacterial infection in resisting the fungal infection in withstanding the water stress in withstanding O2 stress Ans:in withstanding the water stress
14	During the process of Plasmolysis of Plant cell The Y of outside solution is greater than the Y of solution present between cell wall and cell membrane The Y of solution between cell wall and protoplast is equal to the Y of cell sap The Y of outside solution and solution present between cell wall and Protoplast is same The P of protoplast gradually increases. Ans:The Y of outside solution and solution present between cell wall and Protoplast is same
15	[A]: In thistle funnel experiment, egg membrane behaves as selectively permeable membrane [R]: Egg membrane allows the diffusion of both water and Sucrose 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	Choose the correct statement Movement of water from trichoblast to Root xylem is entirely apoplastic Water movement from root hair to inner most layer of general cortical cell is always apoplastic Complete movement water from trichoblast to xylem of root can be symplastic Movement of water from trichoblast to root xylem is symplastic at the beginning and later apoplastic Ans:Complete movement water from trichoblast to xylem of root can be symplastic
17	Water is mainly absorbed by plants by Passive, osmotic mechanism Active, non-osmotic mechanism Active, osmotic mechanism Non Active, non-osmotic mechanism Ans:Passive, osmotic mechanism
18	`[A]: Plants absorb water by Passive mechanism [R]: Water of soil solution enters into root hair due to difference in water potential between soil and root hair 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 but R is not the correct explanation of A
19	The components of symplast of plants are I. Cell wall II. Plasmodesmata III. Intercellular spaces IV. Protoplasts I and II III and IV I and III II and IV Ans:II and IV
20	Choose the correct statement Movement of water from root hair to xylem of root is apoplastic Water movement from root hair to Innermost layer of general cortex is always symplastic Water path from endodermis to xylem of root is always symplastic Much of the movement of water from root hair to cortex is symplastic. Ans:Water path from endodermis to xylem of root is always symplastic
21	Water of soil enters into cell wall of root epidermal cell by Facilitated diffusion osmosis Active diffusion Imbibition Ans:Imbibition
22	Arrange the following plants with gradual increase in their height i) Pseudotsuga menziensii ii) Eucalyptus amygdalina iii) Sequoia sempervirence iv) Eucalyptus regnans ii, iv, iii, i iii, i, iv, ii iii, i, ii, iv i, iii, ii, iv Ans:iii, i, ii, iv
23	[A] : The main driving force for ascent of sap is transpiration. [R] : Transpiration pull is greater than cohesive force of water. 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
24	In the experiment to demonstrate ascent of sap by cohesion and tension theory, the sponge can be compared with Root Xylem Stem Mesophyll Ans:Mesophyll
25	The theory proposed by Dixon explains the following function of plants Absorption of water Absorption of minerals Transpiration Movement of mineral water through xylem Ans:Movement of mineral water through xylem
26	The driving force for ascent of sap is difference in Y between the mesophyll cells and xylem of leaf Cohesive force of water Adhesive force of water difference in Y between root and soil Ans:difference in Y between the mesophyll cells and xylem of leaf
27	The cohesive force of water is 300MPa 30MPa 30 bars 0.3MPa Ans:30MPa
28	Match the following Y value regions A) -30 I) Soil solution B) -0.03 II) Root xylem C) -3.0 III) Atmosphere D) -0.3 IV) Leaf xylem A - III, B - I, C - IV, D - II A - I, B - III, C - II, D - IV A - III, B - IV, C - I, D - II A - III, B - I, C - II, D - IV Ans:A - III, B - I, C - IV, D - II
29	[A]: Ringing experiments are carried out in Monocots [R]: Monocots have atactostele in their stems 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
30	The tallest spermatophyte is Eucalyptus amygdalina Eucalyptus regnans Polylalthia longifolia Sequoia gigantia Ans:Eucalyptus regnans
31	During ascent of sap actually the tension is created in Protoplast of Mesophyll cells Cell walls of mesophyll cells Xylem of leaf Stoma of epidermis Ans:Cell walls of mesophyll cells
32	The minimum water potential gradient required for ascent of sap in tallest plant of the plant kingdom is 13 bars 23 bars 27 bars 40 bars Ans:13 bars
33	[A]: The Y of pure water is zero [R]: The chemical potential of pure water is greater than the chemical potential of water present in a solution 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 but R is not the correct explanation of A
34	Taylor coined the term Chemical potential Water potential Matric potential Solute potential Ans:Water potential
35	If the turgor pressure of a cell increases, there is also increase in I. Y II. m III. p IV. p V. T I, II, III, IV II, III, IV I, II, III, V I, II, III Ans:I, II, III
36	A, B and C are the cells of a root. Cell A has the P of 3 MPa, Π of – 4.5 MPa and T of -0.5 MPa. Cell B has T as -0.75 MPa, Π of -4.5 Mpa and P of 2.75 MPa. Cell C has P as 6 MPa, T as -1.5 MPa and Π as – 5 MPa. If the movement of water is symplastic, Cells A, B and C are respectively Cortical cell, Trichoblast, Endodermal cell Trichoblast, Cortical cell, Endodermal cell Endodermal cell, Cortical cell, Trichoblast Cortical cell, Endodermal cell, Trichoblast Ans:Cortical cell, Endodermal cell, Trichoblast
37	Matric potential is due to the presence of Water soluble hydrophilic substances Water insoluble hydrophobic substances Water insoluble hydrophilic substances Lipohilic substances Ans:Water insoluble hydrophilic substances
38	Wall pressure is due to the development of Negavite osmotic potential Turgor pressure Negative water potential Imbibitional pressure Ans:Turgor pressure
39	In Potato osmoscope experiment, the structure that behaves as semipermeable membrane is Periderm Corky layer Cell walls of parenchyma cells Cell membrane of storage parenchyma Ans:Cell membrane of storage parenchyma
40	In a turgid cell, the wall pressure and Turgor pressure are Equal in the same directions Unequal in the same direction Equal in opposite directions Unequal in the opposite directions Ans:Equal in opposite directions
41	Match the following Plant cell Y value A) Trichoblast I)- 20 bars B) Passage cell II)- 3 M p a C) Root pericycle cell III) -1 M p a D) Mesophyll cell IV) - 25 bars V) 0 bars A - V, B - I, C - IV, D - II A - III, B - II, C - IV, D - I A - II, B - III, C - V, D - IV A - III, B - I, C - IV, D - II Ans:A - III, B - I, C - IV, D - II