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Choose the correct answer, 1 Girdling of a tree results in the death of the tree, due to:, {a) Starvation of root, (>) Starvation of shoot, (©) No conduction, (4) No upward conduction of food, * The ell increases in volume ifthe external solution, , (a) Hypertonic, () Hypotonic, (©) Isotonic, (4) Concentrated than cell sap, * Mineral salts are absorbed by roots from the soil, in the form of:, ‘) Very dilute solution, ©) Concentrated solution, . Hypertonic solution, 4. 1) Very concentrated solution , /, when it is placed in:, (ariasmolysis ina cell occurs, , =, , (b) Hypotonic solution, (c) Hypertonic solution, (d) None of these, 5. Transport of water in stem takes place through:, (a) Phloem, (b) Xylem, , 6. Transport of substances against the concentration, , (4) Active transport, 7. Drooping of leaves of Mimosa plant is due to:, (a) Change in turgor pressure, (b) Imbibition, (c) Plasmolysis, (d) Diffusion, 8. A root hair is:, (a) Extension of cortical cell, , (b) Extension of epidermal cell
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292 | ICSE CHAPTERWISE MCQs (BloLOGy) - x, , (c) Specialised multicellular structure, (d) Extension of endodermis, , 9. Some liquid is collected from the xylem in the, stem of a plant, What is present in the liquid?, (a) Cellulose (b) Inorganic ions, , of a plant, as the water travels from the roots to &, , leaf?, , (a) mesophyll cells -+ root hair -> root cortex —>, xylem, , (b) root cortex -» root hair —> xylem -+ mesophy'l, cells, , (c) root hair -> mesophyll cells -» root cortex —*, xylem, , (4) sat bebe eaevianie regen 9mnnNeee, 11. On a dry, sunny day, how does water vapour, , move through the stomata of a leaf?, , (a) Into the leaf by diffusion, , (b) Into the leaf by respiration, , (c) Out of the leaf by diffusion, , (d) Out of the leaf by respiration, , , , , , , , , , , , , , , , , , , , , , (a), , (b), , ©, , (d), , 15. Osmosis is defined as the diffusion of water, molecules, , , , , , , , KIXISTS, ISDS, , , , S| KIS) x, , , , , , , , , , , , (a) Cieeen Orci eeeeaieatien ppidient Gamegh 8, , 16. which is an example of active transpoy), (a) Carbon dioxide entering a leat, (b) Oxygen moving from the alveoli ig, blood, , © Ion uptake by root hair cells, (d) Water uptake by root hair cells, 17. Which structures must be present in , .., osmosis to take place?, (a) Cell (sap) vacuole and cell wall, 0) Cell wall and cell membrane, () Chloroplast and cytoplasm, (4) Cytoplasm and cell membrane, 18. Each one of the following contribute to the ag,, , anette, , , , , , , , , , , , of sap except for:, (a) Wall pressure (b) Root Pressure, (c) Capillarity (d) Adhesion, , (a) Endosmosis (b) Exosmosis, , (Q) Diffusion (d) Plasmolysis, 20. Special anatomical structure through, , guttation occurs are:, , (a) Hydathode (b) Stomata, , (©) Lenticel (d) Cuticle, , (a) Rate of transpiration is high, (b) Soil is wet and the atmosphere is hum, (c) Soil is dry and atmosphere is dry, (d) Soil is wet and atmosphere is dry, , Match the follow, 22. Match the items in column I with thos, are most appropriate in column I and, correct option., Column I Column It, A. Turgid (i) intake of mines, B. Diffusion (ii) a cell, e water, Active transport (iii) limiting, a vacuole, D. Osmosis (iv) movement of
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ee ean, , , , , , , , , , , , 5 the cell., ia Nucleus (>) Cytoplasm, g Provoplas™ (4) Nucleoplasm, yr ag Pen se, 7) Transpiration (>) Evaporation, . ao (d) Transportation, » Water is used, ss aves a8 8 Fa material in the synth tae, gam, ; @ (b) Absorption, ¢¢) Transpiration (d) Photosynthesis, 6 Root hairs contain —__., @ Salt (>) water, fo Cellsap (d) Minerals, gr. Cell wall is °, |} (a)Semi-permeable —_(b) Selectively permeable, (¢) impermeable (d) Freely permeable, 7 is the relative concentration of solutes, dissolved in solution which determine the, direction and extent of diffusion., (a) Turgidity (b) Tonicity, (Q Plasmolysis (d) Rigidity, 2. If a cell is kept in hypotonic solution, _____, occurs., (a) No osmosis (b) Exosmosis, () Endosmosis (d) Osmosis, ™.___is the pressure exerted by all contents on, the cell wall., (a) Osmotic pressure, (b) Turgor pressure, ( Wall pressure, , membrane,, , (a) Osmosis (b) Diffusion, , (©) imbibition (d) Transportation, ee takes when the, , solution is more concentrated., aw Endosmosis (d), , Flaccidity is the reverse of ___—_—, , (a) Turgidity (b) Plasmolysis, »@ (d) Botha and ¢, , te the result of inwend movement of, , fe enetcules ~, , Plasmolysis (b) Flaceidi, ©) Deplasmolysis (4) Both bande, , , , Atsorption by Roots | 293, , oO Reva of Plamen eee ween Oo SS, , in ,, , (a) Pond water (b) 10% sugar solution, {c) 5% salt solution « (d)- Pure water, , 36. No net flow occurs when a cefl is kept im, (a) Hypotonic sotution (b) Hypertonic sobution, (c) 3% sugar solution (d) lsotonic sotution, , 37. Cell slightly enlarges of bursts when kept in, , , , , , semi-permeable membrane?, , (a) Cellophane paper (>) Egg membrane, , (©) Animal bladder (d) Rubber sheet, , of a solution is a measure of its tendency, to take in water by osmosis., , (a) Turgor pressure, , (b) Wall pressure, , (c) Osmotic pressure, , , , (d) Root presssure, , 41. ____ is a phenomenon by which the living or, dead plant cells absorb water by surface attraction., (a) Imbibition (&) Diffusion, (c) Absorption (d) Transportation, , a2 _ pressure causes rupturing of seed coat, in case of germination., (a) Wall (>) Osmotic, (c) Root (d) imbibition, , , , 45. The concentration gradient of the tons in active, , , , , , transport is opposite to that of >, (a) Osmosis (>) Diffusion, (c) imbibition (d) All of the above, “6. Loss of water (cell sap) through a cut stem is called, (a) Bleeding (>) Guttation, (©) (d) Injury
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,, , 294 | ICSE CHAPTERWISE MCQs (BIOLOGY) ~ x, , , , , , a7. apap nnenrennenepagesang, (a) Lenticels (b) Cuticle, (c) Stomata (d) All of the above, , 48. Root pressure is built up due to cell-to-cell, (a) imbibition (b) Osmosis, (©) Diffusion (d), , 49. Drops of water along the leaf margin are due to, excessive, (a) Transpiration (b) Root Pressure, , (c) Osmotic Pressure (d) Wall Pressure, 50. The removal of water in the form of water droplets, along the margins of the leaf is called __., , (a) Bleeding (b) Guttation, , (c) Transpiration (d) Evaporation, 51. Guttation mainly occurs during __., , (a) Hot weather (>) Dry weather, , (<) Windy day (4) warm humid weather, Name the following, , 52. Movement of molecules of a substance from, their region of higher concentration to lower, concentration when they are in direct contact., (a) Diffusion (b) Endosmosis, (©) Imbibition (d) Active transport, , 53. The space between the cell wall and plasma, membrane in a plasmolysed cell is filled with:, (a) Isotonic solution, (b) Hypotonic solution, (c) Hypertonic solution, (d) Water, , 54. Osmosis and Diffusion are the same except that in, Osmosis there is:, , (a) A free permeable membrane., , (b) A cell wall in between., , (c) Aselective permeable membrane in between., (d) An endless inflow of water into a cell, , 55. Which of the following takes place in active, transport?, , (a) Movement of a substance form its higher to, lower concentration, (b) Movement of water from its lower to higher, concentration, (c) Movement of water from its, ae higher to lower, (d) Movement of a substance from its lower to, aR a, , 56. state of a cell in which the cell wall is, , and stretched by the increase in valine dus won, , absorption of water is called:, (a) Flaccidity (b) Turgidit, (c) Capillarity (d) Toney”, , , , et, ic) Passage of water its lower to, : concentration through a cell membrane oe, energy from the cell., (d) Passage of ions from its lower to hi, ' ontnantentieonghecdl sneniemen, energy from the cell., 59. Guttation, (a) The loss of water in the form of water dropks, from the surface of the leaf., (b) The loss of water in the form of water dropies, through the stomata., (©) The loss of water in the form of water droples, along the leaf margin., (d) The loss of water in the form of water vapoe, along the leaf margin., 60. Ascent of sap, (a) Upward movement of ions from the root hit, to aerial parts of the plant body., (b) Upward movement of water along with &, minerals from the root to aerial parts of, , body., (c) Upward movement of solution from the ®, to aerial parts of the plant body by the pro, , of diffusion., , (4) Upward movement of solute from the 100", , serial parts of the plant body by the proce!, , 61. Ti = is, , (@) Relative concentration of the, , determine the direction and the, osmosis, , (b) Relative concentration of the solute, solvent that determine the direction and ™, diffusion., , ow, rece 4, , extent of
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Conduction of water and food., © of water and minerals from the, @ root to the other parts of the plant., , Semi-permeable, , (a) Allows free movement of only ions through, it., , () Allows free movement of molecules or ions, , through it, , (¢) Allows certain molecules or ions to pass, through it., , (d) Allows movement of water through it., , %. Root hairs, , fa) Absorption of ions and minerals from the soil, , (b) Absorption of water and minerals from the, soil, , (©) Absorption of oxygen and minerals from the, soil, , (4) Absorption of gases and minerals from the, soil, , State the exact location of the, ©. Root hair, {@) Extension of the cortex, , (©) Extension of epidermis, , an Extension of endodermis, Xylem, (®) Centre of the vascular bundle., (©) Outer side of the vascular bundle., ©) On the of leaves, (4) On the margins of roots, Asorption by Roots | 295, , 9. Phivem, (a) Between the lower and upper epidermis., (b) Outer side of the vascular bundle., (ce) On the lower epidermis of leaves, (d) Deep in the plant, , Diagram And Experiment Based Questions, 70. The diagram shows « cross-section through #, Plant stem., , 9, D, ? 6, , X shows the part that is stained red when the stem, is placed in water containing a red dye. What is, , oe x, , 6, , found at X?, (a) Guard cells (b) Palisade cells, (©) Xylem (d) Phicem, , 71. The shows two solutions that are, , separal, , , , , , (c) From ¥ to X down their concentration gradient, (d) From X to ¥ down their concentration gradient, , 72. The diagram shows a plant cell after it has been, pmerged in a solution, for 15 minutes., , , , Which option describes the tonicity of solution P, and the condition of the cell? nes, Solution P is hypertonic than the cell sap, , (@) Ne cell is plasmolysed and turgid.
