Important MCQ On Transport in plant Based on NCERT Textbook 11 Chapter.

   QUESTION based on NCERT textbook.

Q1) Difference between osmotic pressure and turgor pressure is ... ...[ KCET 2011]
 a) DPD
 b) Transpiration pull
 c) Osmotic potential
 d) Solute potential
Q2) Guttation is mainly due to ... .... [ AIIMS 1999 ]
 a) Root pressure
 b) Osmosis
 c) Transpiration
 d) Imbibition
Q3) Which of the following statements does not apply to reverse osmosis?

(A) It is used for water purification

(B) In this technique, pressure greater than osmotic pressure is applied to the system

(C) It is a passive process

(D) It is an active process.

Q4) Loss of water from tips of leaves is .... ...[ AFMC 1998]
 a) Transpiration
 b) Guttation
 c) Bleeding
 d) Respiration
Q5) In pickles infection is rare due to .... .... [ JIPMER 2004]
 a) Plasmolysis
 b) Decrease in osmotic potential by salt
 c) Increase in osmotic potential by salt
 d) Decrease in temperature by salt.

Q6) The lower surface of leaf will have more number of stomata in a

(A) Dorsiventral leaf

(B) Isobilateral leaf

(C) Both (a) and (b)

(D) None of these.

Q7) Force of cohesion develops due to ... ...[ MHTCET 2009]
 a) Attraction between similar molecules
 b) Attraction between different molecules
 c) Surface tension at the interface
 d) All the above

Q8) Which one of the following will not directly affect transpiration?

(A) Temperature

(B) Light

(C) Wind speed

(d) Chlorophyll content of leaves.

Q9) Cell 'A' with O.P = 10 atm and T.P. = 5 atm is in contact with cell 'B' having O.P = 15 atm and T.P. = 12 atm. The flow of water will be ... ...[ AIIMS 1992] 

 a) From A to B  

 b) Equal flow  

 c) From B to A  

 d) No flow

10) The form of sugar transported through phloem is  

(A) Glucose

(B) Fructose

(C) Sucrose

(D) Ribose.

11) If turgor pressure becomes equal to osmotic pressure ... ... [ AIIMS 2002] 

 a) Water leaves the cells  

 b) Water enter the cell  

 c) No exchange of water takes place  

 d) Solute pass out of the cell

12) The process of guttation takes place  

(A) When the root pressure is high and the rate of transpiration is low

(B) When the root pressure is low and the rate of transpiration is high

(C) When the root pressure equals the rate of transpiration

(D) When the root pressure as well as rate of transpiration are high.

13) An antitranspirants in plant is ... ... [ CMC 2003] 

 a) Cobalt chloride

 b) Mercury  

 c) Potassium  

 d) Phenyl mercuric acetate

14) Which of the following is an example of imbibition?

(A) Uptake of water by root hair

(B) Exchange of gases in stomata

(C) Swelling of seed when put in soil

(D) Opening of stomata.

15) Which is not associated with ascent of sap in tall trees ... ..[ EAMCET 2002]

 a) Continuity of water column  

 b) Cohesion and adhesion of water molecules

 c) Transpiration pull  

 d) Pressure of tracheary elements

16) When a plant undergoes senescence, the nutrients may be

(A) Accumulated

(B) Bound to cell wall

(c) Translocated

(D) None of these.

17) Which one keeps its stomata open during night and closed during day ... ... [ AIIMS 1991] 
 a) Cactus  
 b) Water Lily  
 c) Ivy  
 d) Hibiscus

18) Which of the following is an example of imbibition?

(A) Uptake of water by root hair

(B) Exchange of gases in stomata

(C) Swelling of seed when put in soil

(D) Opening of stomata.

19) Which of the following elements is responsible for maintaining turgor in cells ? [NEET 2018] 
 a) Magnesium  
 b) Sodium  
 c) Potassium
 d) Calcium
20) A column of water within xylem vessels of tall trees does not break under its weight because of : [ ReAIPMT 2015] 
 a) Positive root pressure  
 b) Dissolved sugars in water  
 c) Tensile strength of water
 d) Lignification of xylem vessels.

21) A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap ? …[NEET 2016] 
 a) Low refractive index  
 b) Absence of sugar
 c) Acidic  
 d) Alkaline

22) Which of the following criteria does not pertain to facilitated transport ? [NEET2013] 
 a) Requirement of special membrane proteins
 b) High selectivity
 c) Transport saturation
 d) Uphill transport

23) Root cap has no role in water absorption because ... ..... [ AIIMS 1990]
 a) It has no direct connection with the vascular system
 b) It has loosely arranged cells  
 c) It has no cells containing chloroplasts  
 d) It has no root hairs.

24) An adaptation to reduce transpiration is ... ... [ manipal 2003]
 a) Spongy parenchyma
 b) High osmotic pressure
 c) Hydathodes
 d) Aerenchyma

25) The girdling or ringing experiment is that ... ...
 a) The metallic ring is tightly tied to a stem
 b) The ring of tissue external to xylem is removed in a stem
 c) The area is simply marked in the form of ring in a stem
 d) None of the above.

Answers are below :-

 1) A
 2) A
 3) C
 4) B
 5) B
 6) A
 7) A
 8) D
 9) C
10) C
11) C
12) A
13) B
14) C
15) D
16) C
17) A
18) C
19) C
20) C
21) D
22) D
23) B
24) B
25) B

Keep learning the concepts and solving the MCQ.  The more you solve more will   chances of success in NEET. 

Any queries comments below or email us.