Top 150+ Solved Transport in Plants MCQ Questions Answer
Q. The plasmolysed cells regain turgidity and assume original volume under infuence of hypotonic solution. The process is called
a. Plasmolysi
b. Deplasmolysis
c. Endo osmosis
d. Exo osmosis
Q. An animalcell placed in pure water will
a. Swell up and brust
b. Shrink and die
c. Shrink and undergo plasmolysis
d. Swell up and develop turgidity
Q. Passage of water across a selectively permeable membrane is
a. Active transport
b. Pinocytosis
c. Facilitated difusion
d. Osmosis
Q. In thistle funnel experiment, entry of water into thistle funnel stops after some time automatically due to
a. Diffusion of sugar out of thistle funnel.
b. External and internal solutions become isotonic.
c. Development of hydrostatic pressure in the thistle funnel.
d. Development of hydrostatic pressure in the beaker.
Q. In plants the process in which loss of water occurs in form of water vapour is
a. Respiration
b. Guttation
c. Transpiration
d. Exosmosis
Q. Stomatal aperature is surrounded by guard cells and opens when guard cells are
a. Flaccid
b. Turgid
c. Bean shaped
d. Dumb-bell shaped
Q. Stomatal frequency indicates.
a. Number of stomata per unit area
b. Rate of water loss
c. Rate of gaseous exchange
d. Width of stomatal aperature
Q. In dorsiventral leaf, the number of stomata per unit area are generally.
a. Same on both the surface
b. More on lower surface (epidermis)
c. More on upper surface (epidermis)
d. Absent on upper surface
Q. In isobilateral leaf, the number of stomata per unit area are.
a. More on upper surface
b. More on lower surface
c. Approximately same on both the surfaces
d. Absent on both the surfaces
Q. The loss of water in form of water drops is called.
a. Transpiration
b. Respiration
c. Guttation
d. Exosmosis
Q. Transpiration is unavoidable evil because of
a. Structure of leaf and harmful effect
b. Beneficial and harmful effect.
c. Maintenance of turgidity for growth
d. Gaseous exchange for photosynthesis and respiration
Q. Plants with scotoactive stomata perform
a. C4 photosynthesi
b. CAM photosynthesis
c. C3 photosynthesis
d. An oxygenic photosynthesis
Q. For keeping stomata open, besides K+ ions the guard cells require a constant supply of
a. ABA
b. ATP
c. Organic acid
d. Protons
Q. Transpiration is a process related to
a. Osmosi
b. Diffusion
c. Activated transport
d. Facilitated diffusion