MCQ Questions for Class 11 Biology Chapter 11 Transport in Plants with Answers

We have compiled the NCERT MCQ Questions for Class 11 Biology Chapter 11 Transport in Plants with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 11 Biology with Answers on a daily basis and score well in exams. Refer to the Transport in Plants Class 11 MCQs Questions with Answers here along with a detailed explanation.

Transport in Plants Class 11 MCQs Questions with Answers

Question 1.
Root hairs absorb water from soil with the help of
(a) Root pressure
(b) Osmotic pressure
(c) Suction pressure
(d) Turger pressure

Answer

Answer: (b) Osmotic pressure


Question 2.
The ingredient not used for preserving food stuff is
(a) Vinegar
(b) Salt and sugar
(c) Sugar and vinegar
(d) Ethanol

Answer

Answer: (d) Ethanol


Question 3.
Proteins that form huge pores in the membrane of the certain organelles and bacteria are called as
(a) Porins
(b) Pressure gradient
(c) Enzymes
(d) Flaccid

Answer

Answer: (a) Porins


Question 4.
Diffusion rate is affected by
(a) Pressure and soil
(b) Water and pressure
(c) Gradient concentration and pressure
(d) Soil and water

Answer

Answer: (c) Gradient concentration and pressure


Question 5.
What is the effect of turgor pressure in Munch hypothesis?
(a) Increase of turgor pressure
(b) Decrease of turgor pressure
(c) No change in turgor pressure
(d) Independent to water potential gradient

Answer

Answer: (a) Increase of turgor pressure


Question 6.
Munch hypothesis is based on
(a) Translocation of food due to turgor pressure gradient and imbibition force
(b) Translocation of organic solutes
(c) Translocation of food due to turgor pressure gradient
(d) Translocation of food due to imbibition force

Answer

Answer: (c) Translocation of food due to turgor pressure gradient


Question 7.
A and B are contiguous cells. A has OP = 10 atm and TP = 7atm, B has OP = 8atm, TP = 3 atm, DPD = 5 atm. The result would be
(a) No movement of water
(b) Equilibrium between the two
(c) Movement of water from B to A
(d) Movement of water from A to B

Answer

Answer: (d) Movement of water from A to B


Question 8.
Which of the following has highest water potential?
(a) 1 M sugar solution
(b) Distilled water
(c) 1 M salt solution
(d) 1 M sugar solution with 2-3 bar pressure

Answer

Answer: (b) Distilled water


Question 9.
Munch hypothesis is based on
(a) Translocation of food due to turgor pressure gradient and imbibition force
(b) Translocation of food due to turgor pressure gradient
(c) Translocation of food due to imbibition force
(d) None of the above

Answer

Answer: (b) Translocation of food due to turgor pressure gradient


Question 10.
ψp denotes to
(a) Water potential
(b) Negative potential
(c) Pressure potential
(d) Solute potential

Answer

Answer: (c) Pressure potential


Question 11.
Rate of transpiration is highest when
(a) Soil is dry and air is humid
(b) Soil is wet and air is dry
(c) Both soil and air are dry
(d) Soil is wet and air is humid

Answer

Answer: (b) Soil is wet and air is dry


Question 12.
The system of adjacent cell walls that is continuous throughout the plant is called as
(a) Symplast
(b) Apoplast
(c) Guttation
(d) Root pressure

Answer

Answer: (b) Apoplast


Question 13.
Rupture and fractionalization of water column present in treachery elements does not occur during ascent of sap due to
(a) Cohesion and adhesion
(b) Lignified thick walls
(c) Weak gravitational pull
(d) Transpirational pull

Answer

Answer: (a) Cohesion and adhesion


Question 14.
A concept fundamental to understanding water movement is called
(a) Pressure potential
(b) Water potential
(c) Solute potential
(d) Concentration gradient

Answer

Answer: (b) Water potential


Question 15.
The molecules which move from higher to lower regions are called as
(a) Imbibition
(b) Diffusion
(c) Osmosis
(d) Guttation

Answer

Answer: (b) Diffusion


Question 16.
Potometer works on the principle of
(a) Root pressure
(b) Amount of water absorbed equals to the amount transpired
(c) Osmotic pressure
(d) Potential difference between the tip of the tube and that of the plant

Answer

Answer: (b) Amount of water absorbed equals to the amount transpired


Question 17.
In plant cell, the cytoplasm of the adjacent cells are connected through bridges called
(a) Intercellular bridge
(b) Plasmodesmata
(c) Intracellular bridge
(d) Cell membrane

Answer

Answer: (b) Plasmodesmata


Question 18.
The component that is essential to perform all physiological activities of the plant is
(a) Pressure
(b) Water
(c) Temperature
(d) All of the above

Answer

Answer: (b) Water


Question 19.
The form of sugar transported through the phloem is
(a) Sucrose
(b) Fructose
(c) Ribose
(d) Glucose

Answer

Answer: (a) Sucrose


Question 20.
The excess water collected in the form of droplets around special openings of veins near tip of leaves is called as
(a) Guttation
(b) Transpiration
(c) Bleeding
(d) Oozation

Answer

Answer: (a) Guttation


Question 21.
Radial conduction of water takes place by
(a) phloem
(b) vessels
(c) vessels and tracheids
(d) ray parenchyma cells

Answer

Answer: (d) ray parenchyma cells


Question 22.
In plants, capillarity is aided by the small diameter of
(a) Trachery elements
(b) Cortical cells
(c) Parenchyma cells
(d) Phloem tissue

Answer

Answer: (a) Trachery elements


Question 23.
Transport of water and mineral in plants take place through
(a) Collenchymas tissues
(b) Phloem tissues
(c) Parenchyma
(d) Xylem tissues

Answer

Answer: (d) Xylem tissues


Question 24.
Water molecules are attracted to each other in the liquid phase more than to water in the gas phase
(a) Adhesion
(b) Surface tension
(c) cohesion
(d) capillarity

Answer

Answer: (b) Surface tension


Question 25.
The pathway of the movement of water through the cell wall only is called
(a) Symplast pathway
(b) Vacuolar pathway
(c) Plasmodesmata pathway
(d) Apoplast pathway

Answer

Answer: (d) Apoplast pathway


Question 26.
Select the correct equation from the following
(a) DPD = WP – OP
(b) DPD = WP + OP
(c) DPD = OP + WP
(d) DPD = OP – WP

Answer

Answer: (d) DPD = OP – WP


Question 27.
Stomata close down if relative humidity of atmosphere falls below
(a) 50%
(b) 70%
(c) 80%
(d) 60%

Answer

Answer: (a) 50%


Question 28.
Transport over longer distances proceeds through the vascular system
(a) Osmosis
(b) Translocation
(c) Transpiration
(d) Diffusion

Answer

Answer: (b) Translocation


Question 29.
Which one of the following will not directly affect transpiration?
(a) Temperature
(b) Chlorophyll content of leaves
(c) Wind speed
(d) Light

Answer

Answer: (b) Chlorophyll content of leaves


Question 30.
In wall of guard cell, cellulose microfibrils are arranged
(a) Transversely
(b) Tangently
(c) Radially
(d) Obliquely

Answer

Answer: (c) Radially


Question 31.
Cohesion-tension theory is related to
(a) Transpiration
(b) Respiration
(c) Ascent of sap
(d) Photosynthesis

Answer

Answer: (c) Ascent of sap


Question 32.
The rate of transpiration of a plant would gradually increase if
(a) Relative humidity decreases
(b) Relative humidity remains unchanged
(c) Relative humidity increases
(d) Water potential gradient remains unchanged

Answer

Answer: (a) Relative humidity decreases


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