Top 150+ Solved Transport in Plants MCQ Questions Answer
Q. Ascent of sap is
a. Upward movement of water in the plant
b. Downward movement of organic nutrients
c. Upward and downward movement of water in the plant
d. Redistribution of inorganic substances in the plant
Q. In xylem, the ascent of sap takes place in
a. Tracheids with associated xylem parenchyma
b. Xylem parenchyma
c. Walls of tracheary elements
d. Lumen of tracheary elements
Q. Swelling of wooden frames during rains is caused by
a. Endo osmosi
b. Imbibation
c. Capillarity
d. Osmosis
Q. Dry seeds when placed in waeter swell up due to
a. Imbibition
b. Absorption
c. Diffusion
d. Adsorption
Q. A cell is plasmolysed after being kept in hypertonic solution. What will be present between cell wall and plasmalemma ?
a. Isotonic solution
b. Hypertonic solution
c. Air
d. Hypotonic solution
Q. Raisins placed in water swell up due to (CPMT 1988, KCET 2008)
a. Plasmolysi
b. Adsorption
c. Diffusio
d. Endo osmosis
Q. Root hairs absorb water from soil when (AFMC 1988, JIPMER 1986)
a. Osmotic concentration is same in the two
b. Solute concentration is higher in soil solution
c. Solute concentration is higher in root hairs
d. Absorption is active
Q. A cell placed in strong salt solution will shrink because (JIPMER 1986)
a. Cytoplasm will decompose
b. Mineral salts will break the cell wall
c. Salt water enters the cell
d. Water comes out by exoosmosis
Q. Osmosis defined as
a. Flow of solvent (water) through a semipermiable membrane from less concentrated solution to more concentrated solution.
b. Flow of solute from a semipermeable membrane
c. Flow of water without a membrane
d. None ot the above
Q. A cell increase in volume if the external medium is (Har. PMT 2005)
a. Hypotonic
b. Hypertonic
c. Isotonic
d. None of the above
Q. If a cell gets reduced in size when placed in solution, the solution is (CPMT 1988, AFMC 2009)
a. Hypertonic
b. Hypotonic
c. Weak
d. Saturated
Q. In a hypertonic solution a cell’s water potential
a. Decrease
b. Increases
c. First increases then decreases
d. No change
Q. An example of selectively permeable membrane is (CPMT 1988)
a. Plasmalemma
b. Cell wall
c. Mitochondrial membrane
d. Chloroplast membrane
Q. When beet root cylinders are washed and then placed in cold water, anthocyanin does not comeout. This indicates that most likely the plasma membrane is (AFMC 1990)
a. Permeable to enthocyanin
b. Impermeable to anthocyanin
c. Differentially permeable to anthocyanin
d. Dead structure
Q. Purple cabbage leaves do not pass out colour in cold water but do so in hot water becasue (AFMC 1988)
a. Hot water enters the cell faster
b. Pigment is not soluble in cold water
c. Hot water destroys cell walls
d. Hot water kills plasmalemma and makes it permeable