Transport in Plants Set 5

All India Pre Medical Test (AIPMT)

Practice Mode Previous Next
On This Page

This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Transport in Plants Set 5

Q1 | Stomata of CAM plants (CBSE 2003)
  • Are always open
  • Open during the day and close at might
  • Open during night and close during the day
  • Nerve open
Answer: Are always open
Q2 | Choose the correct combination of labelling in potato osmoscope. (Manipal PMT 2004)
  • a-final level, b-dot pin, c-initial level, d-sugar solution, e-potato tuber
  • a-initial level, b-dot pin, c-final level, d-water, e-potato tuber
  • a-final level, b-dot pin, c-initial level, d-water, e-potato tuber
  • a-final level, b-dot pin, c-initial level, d- water, e-container
Answer: a-initial level, b-dot pin, c-final level, d-water, e-potato tuber
Q3 | Stomata open during day time due to (Wardha 2005)
  • Decrease in pH
  • Decrease in weater potential
  • Increase in water potential
  • Light
Answer: Decrease in pH
Q4 | In tall trees water is absorbed due to (Manipal 2005, Guj. CET 2011)
  • Transpiration
  • Root pressure
  • Capillary action
  • Photosynthesis
Answer: Root pressure
Q5 | Which one is responsible for opening of stomata ? (Guj. CET 2006)
  • Decrease in CO2 concentration and increse in H+ ion concentration.
  • Decrease in CO2 cone and decrease in H+ ion concentration.
  • Increase in CO2 cone and increase in H+ ion cone.
  • More free H+ ions and less Cl- ions.
Answer: Increase in CO2 cone and increase in H+ ion cone.
Q6 | Cell wall shows (Manipur 2007)
  • Semi permeability
  • Differential permeability
  • Complete permeability
  • Impermeability
Answer: Semi permeability
Q7 | Starch of guard cells is converted into PEP through. (Guj. CET 2008)
  • Hydrolysi
  • Oxidation
  • Dephosphorylation
  • Decarboxylation
Answer: Dephosphorylation
Q8 | Energy source responsible for upward flow of water is (COMED K’s -2008)
  • ATP
  • Sucrose
  • Solar heat
  • Light
Answer: Sucrose
Q9 | Guard cells regulate (Orissa 2008, CBSE 2009)
  • Respiration
  • Transpiration
  • Photosynthesis
  • Photorespiration
Answer: Transpiration
Q10 | Most water flow in root occurs via apoplast as (AMV 2009)
  • Cortical cells are living cells
  • Cortical cells are loosely arranged
  • Cortical cells are thin walled
  • All the above
Answer: All the above
Q11 | Major loss of water in transpiration occurs through (MHT, CET 2009)
  • Cuticle
  • Bark
  • Hydathodes
  • Stomata
Answer: Cuticle
Q12 | A negative effect of transpiration is (Guj. CET 2010)
  • Development of water stres
  • Increase in mineral absorption
  • Maintanance of leaf temperature
  • Causing cooling
Answer: Causing cooling
Q13 | What causes opening of stomata (Guj. CET 2010)
  • Thin wall of guard cell facing stomatal pore is stretched more, curves in and the pore opens.
  • Thick wall of guard cell facing stomatal pore is stretched more, moves in and pore opens.
  • As thin wall of guard cell is stretched less, the guard cell wall facing the stomatal pore moves in and pore opens.
  • Thick wall of guard cell facing the stomatal pore is strectched less, moves, in and the pore opens.
Answer: As thin wall of guard cell is stretched less, the guard cell wall facing the stomatal pore moves in and pore opens.
Q14 | Whose water potential is less than water potential of root hair during water absorption by root hair. (Guj. CET 2011)
  • Gravitational water
  • Pure water
  • Vacuolar sap
  • Soil solution\
Answer: Soil solution\
Q15 | Tracheids are less efficient than vessels due to (MHT, CET 2011)
  • Absense of closed end wall
  • Uneven thickeningS
  • Caspirian strips
  • Presence of tapering end walls
Answer: Caspirian strips
Q16 | The space between plasma membrane and cell wall of a plasmolysed cell surrounded by a hypertonicsolution is occupied by (KCET 2011)
  • Isotonic solution
  • Hypotonic solution
  • Hypertonic solution
  • Water
Answer: Water
Q17 | The process by which water is absorbed by solids like colloids causing them to increase in volume is
  • Facilitated diffusion
  • Diffusion
  • Osmosis
  • Imbibation
Answer: Diffusion
Q18 | Sotmatal opening is influenced by
  • N2 concentration, CO2 concentration, light
  • CO2 concentration, temperature, light
  • N2 concentration, light, temperature
  • CO2 concentration, N2 concentration, temperature
Answer: CO2 concentration, N2 concentration, temperature
Q19 | 2% Nacl as compared to 18% glucose solution is
  • Isotonic
  • Hypotonic
  • Hypertonic
  • None of the above
Answer: None of the above
Q20 | Water absorption by root hairs occurs untill (COMED-K’s 2010)
  • Concentration of water in the cell sap is higher
  • Salt concentration in cell sap is higher
  • They are separated from the soil by a selectively permeable membrane
  • Water potential is lower
Answer: Salt concentration in cell sap is higher
Q21 | Which pathway involves cell wall and inter cellular spaces ? (COMED-K’s 2010)
  • Vascular pathway
  • Protoplast pathway
  • Symplast pathway
  • Apoplast pathway
Answer: Apoplast pathway
Q22 | Glucose is not stored in plants due to its effect in
  • Decrease in osmotic pressure
  • Increase in osmotic pressure
  • Increase in turgor pressure
  • Decreas in turgor pressure
Answer: Increase in turgor pressure
Q23 | Match the columns :I II(a) Diffusion (1) Hydrophilic substances(b) Osmosis (2) Shrinkage of protoplasm(c) Imbibation (3) Semipermiable membrane(d) Plasmolysis (4) Free movement of ions and gases
  • (a)-(2),
  • -(1),
  • -(4),
  • -3
Answer: -(4),
Q24 | What does A and B indicate in the diagram ?
  • A - Epidernal cell, B - Guard cell
  • A - Guard cell, B - Epidermal cell
  • A - Thickened wall, B - Epidermal cell
  • A - Cytoplasmic membrane, B - Guard cell
Answer: A - Epidernal cell, B - Guard cell
Q25 | What does A and B indicate in the diagram ?
  • A - Epidemal Cell, B - Guard cell
  • A - Guard cell, B - Epidermal cell
  • A - Thickened wall, B - Epidermal cell
  • A - Cytoplasmic membrane, B - Guard cell
Answer: A - Thickened wall, B - Epidermal cell
Previous Next