Class 11 Biology Chapter 11 Transport in Plants MCQ Questions with Answer

Transport in Plants Class 11 MCQ is one of the best strategies to prepare for the CBSE Class 11 Board exam. If you want to complete a grasp concept or work on one’s score, there is no method except constant practice. Students can improve their speed and accuracy by doing more MCQ on Plant Kingdom Class 11, which will help them all through their board test.

Transport in Plants Class 11 MCQ Questions with Answer

Class 11 Biology MCQ with answers are given here to chapter 11 Transport in Plants. These MCQs are based on the latest CBSE board syllabus and relate to the latest Class 11 BIology syllabus. By Solving these Class 11 MCQs, you will be able to analyze all of the concepts quickly in the chapter and get ready for the Class 11 Annual exam.

Learn Class 11 Transport in Plants MCQs with answers pdf free download according to the latest CBSE and NCERT syllabus. Students should prepare for the examination by solving CBSE Class 11 Biology Transport in Plants MCQ with answers given below

Question 1. Which of the following statements is/are not incorrect?                 
(i) Water and minerals, and food are generally moved by a mass or bulk flow system.
(ii) Bulk flow can be achieved either through a positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient.
(iii) The bulk movement of substances through the conducting tissues of plants is called translocati
(iv) Xylem translocates organic and inorganic solutes, mainly from roots to the aerial parts of the plants.
(v) Phloem translocates water, mineral salts, some organic nitrogen and hormones, from the leaves to other parts of the plants.
(a) (ii), (iii) and (v)
(b) (ii), (iii) and (iv)
(c) (iv) and (v)
(d) (ii) and (v)

Question 2. Which of the following statement is correct?                 
(a) Unlike water, all minerals cannot be passively absorbed by roots.
(b) Most of the minerals enter the root by active transport.
(c) Ions are absorbed from soil by both passive and active transport.
(d) All of the above

Question 3. Which of the following statement is incorrect regarding stomata?               
(a) It helps in exchange of oxygen and carbon dioxide in the leaf.
(b) It is open in the day time and close during the night.
(c) Opening or closing of the stomata is a change in the turgidity of the guard cells.
(d) The inner wall of each guard cell, towards the stomatal aperture is thin and rigid.

Question 4. Which of the following statements is/are correct?                 
(i) The apoplastic movement of water occurs exclusively through the cell wall without crossing any membranes.
(ii) The apoplastic movement occurs from cell to cell through the plasmodesmata.
(iii) Endodermis is impervious to water because of a band of suberised matrix.
(iv) Symplastic movement may be aided by cytoplasmic streaming which occurs in Hydrilla leaf and chloroplast.
(a) (i) and (ii)
(b) (ii) and (iv)
(c) (i), (iii) and (iv)
(d) (i), (ii) and (iv)

Question 5. Find out the incorrect statements.           
(a) The process of plasmolysis is usually irreversible.
(b) The pressure exerted by the protoplasts due to entry of water against the rigid walls is called yp.
(c) The T.P. is responsible for enlargement and extension growth of cells.
(d) Plant cells swell in hypotonic solutions.

Question 6. Which of the following the statements regarding mycorrhizae is incorrect?                 
(a) Mycorrhizal fungi form a network around the young root and they penetrate the root cells.
(b) Mycorrhizae helps the plant to absorb water and minerals.
(c) Root provides sugar and nitrogenous organic compounds to the mycorrhizae.
(d) Pinus seed can germinate and establish without mycorrhizae.

Question 7. The following statements are associated with translocation of mineral ions.               
(i) Mineral ions are slowly remobilised.
(ii) Younger leaves export most of their minerals content to older leaves.
(iii) Elements most readily mobilised are P, S, N and K.
(iv) Some elements that are structural components like calcium are not remobilised. Which of the above statements are correct?
(a) (i) and (iii)
(b) (i) and (ii)
(c) (iii) and (iv)
(d) (ii) and (iii)

Question 8. Which of the following factors affect transpiration?                 
(i) Number and distribution of stomata.
(ii) Percent of open stomata.
(iii) Water status of the plant.
(iv) Canopy structure.
(a) (i) and (ii)
(b) (i), (ii) and (iii)
(c) (ii) and (iv)
(d) (i), (ii), (iii) and (iv)

Question 9. Which of the following statements, (i -v) regarding transpiration is/are correct?                 
(i) It creates transpiration pull for absorption and transport of plants.
(ii) It supplies water for photosynthesis.
(iii) It transports minerals from the soil to all parts of the plants.
(iv) It heats leaf surfaces, sometimes 10 to 15 degrees.
(v) It maintains the shape and structure of the plants by keeping cells turgid.
(a) Only (ii)
(b) Only (iii)
(c) (i), (ii), (iii) and (v)
(d) All

Question 10. Match the name of the activities given under column-I with the description of activity given under column-II and choose the correct option.                 
 Column-I               Column-II
A. Cohesion          I. The ability to rise in their tubes.
B. Adhesion          II. Loss of water vapour from plant parts.
C. Tensile strength III. Mutual attraction between water molecules
D. Capillarity          IV. Attraction of water molecules to polar surfaces
                             V. An ability to resist a pulling force.
(a) A – I; B – II; C – III; D – V
(b) A – II; B – I; C – IV; D – III
(c) A – III; B – IV; C – V; D – I
(d) A – IV; B – V; C – II; D – III

Question 11. A boy is studying transport of a certain type of molecules into cell. He finds that transport slows down when the cells are poisoned with a chemical that inhibits energy production.  nder normal circumstances the molecules studied by the boy is probably transported by                   
(a) simple diffusion
(b) osmosis
(c) active transport
(d) facilitated diffusion

Question 12. Osmosis is a form of diffusion in which                 
(a) the solvent moves through a semipermeable membrane from its region of higher chemical potential to its region of lower chemical potential.
(b) the solvent moves through a semipermeable membrane from its region of lower chemical potential to its region of higher chemical potential.
(c) the solute moves through a semipermeable membrane from a region of higher concentration to lower concentration.
(d) the solute moves through a semipermeable membrane from a region of lower concentration to higher concentration.

Question 13. Match column-I with column-II and find out the correct answer from the code given below.                 
 Column-I          Column -II
 A. Diffusion      I. Hydrophilic substances
 B. Osmosis      II. Shrinkage of protoplasm
 C. Imbibition   III. Semipermeable membrane
 D. Plasmolysis  IV. Free movement of ions and gases
(a) A – II; B – I; C –IV; D – III
(b) A – IV; B – III; C – I; D – II
(c) A – III; B – I; C – IV; D – II
(d) A – II; B – III; C – IV; D – I

Question 14. Match the name of the activities given under column-I with the description of activity given under column-II and choose the correct option.                 
  Column-I            Column-II
A. Transpiration     I. Anaerobic respiration in yeast
B. Guttation          II. Active absorption of water
C. Exudation         III. Loss of water vapour from plant parts
D. Fermentation     IV. Loss of liquid water from leaves
                            V. Loss of water from injured plant parts
(a) A – I; B – II; C – III; D – V
(b) A – II; B – I; C – IV; D – III
(c) A – III; B – IV; C – V; D – I
(d) A – IV; B – V; C – II; D – III

Question 15. Read the given statement and answer the question : “Osmosis is the diffusion of a solution of a weaker concentration when both are separated by semipermeable membrane”. What  s the error in the statement ?                   
(a) The movement of solvent molecule is not specified.
(b) There is no mention of DPD.
(c) Behaviour of semipermeable membrane is not specified.
(d) The exact concentration of solutions are not indicated.

Question 16. A plant cell placed in pure water will                   
(a) expand until the osmotic potential or solute potential reaches that of water.
(b) becomes more turgid until the pressure potential of cell reaches its osmotic potential.
(c) become more turgid until osmotic potential reaches that of pure water.
(d) becomes less turgid until the osmotic potential reaches that of pure water.

Question 17. Water will move from its region of higher chemical potential to its region of lower chemical potential until                 
(a) equilibrium is reached.
(b) amount of both solvent and solute in both regions become equal.
(c) solvent amount in both regions become equal.
(d) solute amount in both regions become equal.

Question 18. A cell is said to be flaccid when                   
(a) there is no net flow of water towards the inside or outside.
(b) the external solution balances the osmotic pressure of the cytoplasm.
(c) water flows into the cell and out of the cell and are in equilibrium.
(d) the external solution is more dilute than the cytoplasm.

Question 19. The net direction and rate of osmosis depends on both the ‘X’ and ‘Y’. Identify ‘X’ and ‘Y’.                 
(a) X – Solute; Y – Solvent
(b) X – Pressure potential; Y – Solute potential
(c) X – Water potential; Y – Pressure gradient
(d) X – Pressure gradient; Y – Concentration gradient

Question 20. Bacteria cannot survive in a highly salted pickle because                 
(a) salt inhibits reproduction of bacteria.
(b) they become plasmolysed and death occurs.
(c) nutrients in pickle cannot support life.
(d) enough light is not available for photosynthesis.

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Question 21. A boy has taken fresh twig from a tree and then he placed it into a coloured water. After a few hours he cut the surface of the twig and examine it with a magnifying glass to study the path of water movement. This experiment demonstrates that movement of water occurs through                 
 (a) xylem
(b) phloem
(c) sieve tube
(d) casparian strip

Question 22. Process of imbibition results in                 
(a) increase in the volume of imbibant but without development of pressure.
(b) decrease in the volume of imbibant and development of pressure.
(c) no change in volume of imbibant but pressure develops.
(d) increases in volume of imbibant and development of pressure.

Question 23. Seeds when soaked in water, they imbibe because of                 
(a) OP inside the seed is low.
(b) OP of water is high.
(c) DPD of seed is very much low.
(d) water potential gradient between the seed coat and water.

Question 24. Dry wooden stakes, if driven into a small crack in a rock and then soaked, can develop enough pressure to split the rock. Such a pressure is built up through the phenomenon of                     
(a) imbibition
(b) transpiration
(c) turgor pressure
(d) plasmolysis

Question 25. The movement of water from one cell of the cortex to the adjacent one in roots is due to                 
(a) water potential gradient.
(b) chemical potential gradient.
(c) turgor pressure.
(d) mass flow.

Question 26. A bottle filled with previously moistened mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon  nvolved in this is                 
(a) diffusion
(b) imbibition
(c) osmosis
(d) D.P.D.

Question 27. Which of the following is correct regarding guttation?                   
(a) It occurs through stomata.
(b) It occurs through hydathodes.
(c) It occurs mostly during night and early morning.
(d) Both (b) and (c)

Question 28. ‘X’ breaks the continuity of the ‘Y’ pathway and forces water and solutes to cross the endodermis by passing through the plasma membrane. Identify ‘X’ and ‘Y’.                 
(a) X – Suberin; Y – Tonoplast
(b) X – Suberin; Y – Symplast
(c) X – Casparian strip ; Y – Tonoplast
(d) X – Casparian strip ; Y – Apoplast

Question 29. A Botanist discovered a mutant plant that was unable to produce materials that form casparian strip. This plant would                 
(a) unable to transport water or solutes to the leaves.
(b) unable to use its sugar as a sugar sink.
(c) able to exert greater root pressure than the normal plant.
(d) unable to control amounts of water and solutes it absorbs.

Question 30. Stomata in angiosperms open and close due to                 
(a) their genetic constitution.
(b) effect of hormone.
(c) changes of turgor pressure in guard cells.
(d) pressure of gases inside the leaves.

Question 31. Which one of the following is not related to guttation?                 
(a) Water is given out in the form of droplets.              
(b) Water given out is impure.
(c) Water is given out during daytime.
(d) Guttation is a process of universal occurrence.

Question 32. Which of the following compound is used to study water loss from a leaf and turns colour on absorbing water?               
(a) Calcium chloride
(b) Magnesium chloride
(c) Cobalt chloride
(d) Sodium chloride

Question 33. If a stem is girdled,                 
(a) root dies first.
(b) shoot dies first.
(c) both die together.
(d) none of the above.

Question 34. Stomata closes because                 
(a) guard cells lose turgidityand becomes flaccid
(b) of increased turgidity of the guard cells brought about by exposure to light.
(c) O.P. of the guard cell increases
(d) of the movement of water from neighbouring cells into guard cells.

Question 35. Arrange the following events in a correct order that explains the mass flow of materials in the phloem?                 
(i) Water diffuses into the sieve tube elements.
(ii) Leaf cells produce sugar by photosynthesis.
(iii) Solutes are actively transported into the sieve elements.
(iv) Sugar is transported from cell to cell in the leaf.
(v) Sugar moves down the stem.
(a) (ii) – (iv) – (iii) – (i) – (v)
(b) (ii) – (iv) – (i) – (iii) – (v)
(c) (i) – (ii) – (iii) – (iv) – (v)
(d) (iv) – (ii) – (i) – (iii) – (v)

Question 36. If the external solutions balance the osmotic pressure of cytoplasm, it is said to be                 
(a) isotonic
(b) hypotonic
(c) atomic
(d) hypertonic

Question 37. In part A of a plant, sugars are actively transported into the phloem tissue. In part B, sugars are actively transported out of the phloem. Which way will the phloem sap move under  hese conditions?               
(a) From A to B.
(b) From B to A.
(c) First from A to B; then, once the pressure builds up, from B to A.
(d) First from B to A; then, once the pressure builds up, from A to B.

Question 38. Transpiration facilitates                 
(a) electrolyte balance
(b) absorption of water by roots
(c) opening of stomata
(d) excretion of minerals.

Question 39. Which of the following will affect the active uptake of water?               
(a) Transpirational power of the root hairs.
(b) Typical tissue organization.
(c) Tension due to transpiration.
(d) Osmotic concentration of the cell sap of the leaves.

Question 40. Stomata opens when                 
(a) guard cells swell due to a decrease in their water potential.
(b) guard cells swell up due to an increase in their water potential.
(c) guard cells swell by endosmosis due to efflux of potassium ions.
(d) guard cells swell by endosmosis due to influx of hydrogen ions (protons).

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