In This Post we are  providing Chapter-11 Transport in Plants NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON TRANSPORT IN PLANTS

Question 1 : Stomata open and close due to

• a) turgor pressure of guard cells
• b) pressure of gases inside the leaves
• c) genetic clock
• d) ircadian rhythm

Answer : turgor pressure of guard cells

Question 2 : Movement of ions or molecules in a direction opposite to that of prevailing electrochemical gradient is known as

• a) active transport
• b) brownian movement
• c) diffusion
• d) pinocytosis

Answer : active transport

Question 3 : Osmosis means movement of

• a) solvent from low concentration of solution to higher concentration of solution.
• b) solvent from higher concentration of solution to low concentration of solution.
• c) solute from higher concentration to lower concentration.
• d) None of these

Answer : solvent from low concentration of solution to higher concentration of solution.

Question 4 : Solution outside a cell has higher concentration than cytoplasm, then the solution is

• a) hypertonic
• b) acidic
• c) isotonic
• d) hypotonic

Answer : hypertonic

Question 5 : Which of the following is used as antitranspirant?

• a) Phenyl mercuric acetate
• b) Cobalt chloride
• c) Naphthol acetic acid
• d) Calcium carbonate

Answer : Phenyl mercuric acetate

Question 6: In rainy season, door gets swelled due to

• a) imbibition
• b) transpiration
• c) diffusion
• d) respiration

Answer : imbibition

Question 7 : Turgor pressure become equal to the wall pressure when

• a) no exchange of water takes place
• b) solute goes from cell into water
• c) water enter the cell
• d) water leaves the cell

Answer : no exchange of water takes place

Question 8 : Addition of a solute to pure water causes

• a) negative water potential
• b) more negative water potential
• c) positive water potential
• d) more positive water potential.

Answer : negative water potential

Question 9 : Which one of the following process help the water- soluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts?

• a) Leaching
• b) Fragmentation
• c) Catabolism
• d) None of these

Answer : Leaching

Question 10 : Water logging of soil makes it physiologically dry because

• a) this condition does not allow oxygen to enter the soil
• b) this condition does not allow the capillary force to work
• c) Both
• d) None of the above

Answer : this condition does not allow oxygen to enter the soil

Question 11 : The phenomenon of plasmolysis is evident when cells are kept in

• a) hypertonic solution
• b) isotonic solution
• c) None of the above
• d) hypotonic solution

Answer : hypertonic solution

Question 12 : The casparian strip prevents water and minerals from entering the stele through the

• a) apoplast
• b) xylem vessel
• c) plasmodesmata
• d) symplast

Answer : apoplast

Question 13: If a soft stemmed plant, is cut horizontally near the base of its stem with a sharp blade on early morning of a humid day, drops of solution ooze through cut stem. This is due to

• a) root pressure
• b) bleeding
• c) guttation
• d) transpiration pull

Answer : root pressure

Question 14 : The movement of water up the stems of tall plants is least dependent on which of the following factors ?

• a) Guttation
• b) Transpiration
• c) Cohesiveness of water molecules
• d) Tension within column of water molecules

Answer : Guttation

Question 15 : The primary difference between the apoplast and the symplast is that the

• a) apoplast is nonliving spaces and cell walls
• b) apoplast relies on active transport.
• c) symplast is nonliving spaces and cell walls
• d) apoplast prevents passive diffusion

Answer : apoplast is nonliving spaces and cell walls