Top 150+ Solved Transport in Plants MCQ Questions Answer
Q. Energy source responsible for upward flow of water is (COMED K’s -2008)
a. ATP
b. Sucrose
c. Solar heat
d. Light
Q. Guard cells regulate (Orissa 2008, CBSE 2009)
a. Respiration
b. Transpiration
c. Photosynthesis
d. Photorespiration
Q. Most water flow in root occurs via apoplast as (AMV 2009)
a. Cortical cells are living cells
b. Cortical cells are loosely arranged
c. Cortical cells are thin walled
d. All the above
Q. Major loss of water in transpiration occurs through (MHT, CET 2009)
a. Cuticle
b. Bark
c. Hydathodes
d. Stomata
Q. A negative effect of transpiration is (Guj. CET 2010)
a. Development of water stres
b. Increase in mineral absorption
c. Maintanance of leaf temperature
d. Causing cooling
Q. What causes opening of stomata (Guj. CET 2010)
a. Thin wall of guard cell facing stomatal pore is stretched more, curves in and the pore opens.
b. Thick wall of guard cell facing stomatal pore is stretched more, moves in and pore opens.
c. As thin wall of guard cell is stretched less, the guard cell wall facing the stomatal pore moves in and pore opens.
d. Thick wall of guard cell facing the stomatal pore is strectched less, moves, in and the pore opens.
Q. Whose water potential is less than water potential of root hair during water absorption by root hair. (Guj. CET 2011)
a. Gravitational water
b. Pure water
c. Vacuolar sap
d. Soil solution\
Q. Tracheids are less efficient than vessels due to (MHT, CET 2011)
a. Absense of closed end wall
b. Uneven thickeningS
c. Caspirian strips
d. Presence of tapering end walls
Q. The space between plasma membrane and cell wall of a plasmolysed cell surrounded by a hypertonicsolution is occupied by (KCET 2011)
a. Isotonic solution
b. Hypotonic solution
c. Hypertonic solution
d. Water
Q. The process by which water is absorbed by solids like colloids causing them to increase in volume is
a. Facilitated diffusion
b. Diffusion
c. Osmosis
d. Imbibation
Q. Sotmatal opening is influenced by
a. N2 concentration, CO2 concentration, light
b. CO2 concentration, temperature, light
c. N2 concentration, light, temperature
d. CO2 concentration, N2 concentration, temperature
Q. 2% Nacl as compared to 18% glucose solution is
a. Isotonic
b. Hypotonic
c. Hypertonic
d. None of the above
Q. Water absorption by root hairs occurs untill (COMED-K’s 2010)
a. Concentration of water in the cell sap is higher
b. Salt concentration in cell sap is higher
c. They are separated from the soil by a selectively permeable membrane
d. Water potential is lower
Q. Which pathway involves cell wall and inter cellular spaces ? (COMED-K’s 2010)
a. Vascular pathway
b. Protoplast pathway
c. Symplast pathway
d. Apoplast pathway
Q. Glucose is not stored in plants due to its effect in
a. Decrease in osmotic pressure
b. Increase in osmotic pressure
c. Increase in turgor pressure
d. Decreas in turgor pressure