Transport in Plants Set 4

All India Pre Medical Test (AIPMT)

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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Transport in Plants Set 4

Q1 | Wilting appears due to excessive. (MP PMT 1989, RPMT 2000, AFMC 2001, Pb. PMT 2001)
  • Respiration
  • Photosynthesis
  • Absorption
  • Transpiration
Answer: Respiration
Q2 | Transpiration is regulated by movement of (JIMER 2004)
  • Guard cell
  • Subsidiary cells
  • Epidermal cells
  • Mesophyll cells
Answer: Subsidiary cells
Q3 | Rate of transpiration is reduced with (CPMT 1987, MPPMT 1999)
  • Rise in temperature
  • Decrease in light intensity
  • Increase in wind velocity
  • Increase in water uptake
Answer: Decrease in light intensity
Q4 | In terrestrial habitats, temperature and railfall conditions are influenced by (CBSE 1989)
  • Water transformation
  • Transpiration
  • Thermoperiodism
  • Translocation
Answer: Water transformation
Q5 | Conversion of starch to organic acids is required for (CBSE 1992)
  • Stomatal opening
  • Stomatal closing
  • Stomatal formation
  • Stomatal activity
Answer: Stomatal formation
Q6 | Element involved in stomatal regulation its opening and closing is(CPMT 1989, 2004, Kerala 2000, Manipal 2001, Pb. PMT 2001, Uttrakhant 2001, DPMT 2002, Wardha 2003, 2011, AMU 2005)
  • Zinc
  • Magnesium
  • Potassium
  • Iron
Answer: Zinc
Q7 | In guard cells when sugar is converted into starch, the stomatal pore (CBSE 1997)
  • Closed completely
  • Opens partiall
  • Opens fully
  • Remains unchanged
Answer: Closed completely
Q8 | Water will be absorbed by root hairs when the externael medium is (JIPMER 1986, AFMC 1993)
  • Hypotonic
  • Hypertonic
  • Isotonic
  • Viscous
Answer: Isotonic
Q9 | Root hairs occur in the zone of (Kerala 2003)
  • Cell division
  • Cell elongation
  • Cell maturatio
  • Mature cells
Answer: Cell maturatio
Q10 | Path of water movement from soil to xylem is (CPMT 1989, Kerala 2008)
  • Meta xylem - protoxylem - cortex - soil - roothair
  • Cortex - root hair - endodermis - pericycle - protoxylem - meta xylem
  • Soil - root hair - cortex - endodermis - pericycle - protoxylem - meta xylem
  • Pericycle - soil - root hair - cortex endodermis - protoxylem metaxylem
Answer: Soil - root hair - cortex - endodermis - pericycle - protoxylem - meta xylem
Q11 | Water in plants is transported by or ascent of sap takes place through (BHU 1991, DPMT 1987, CPMT 1983, 1996, MHTCET 2009)
  • Cambium
  • Phloem
  • Xylem
  • Epidermis
Answer: Cambium
Q12 | Water rises in the stem due to (RPMT 2000)
  • Cohesion and transpiration pull
  • Turgor pressure
  • Osmotic pressure
  • Root pressure (negative)
Answer: Osmotic pressure
Q13 | The principal pathway of water translocation in angiospermis is (CBSE 1990)
  • Sieve cell
  • Sieve tube elements
  • Xylem vessel system
  • Xylem and phloem
Answer: Sieve tube elements
Q14 | Which contributes most to the transport of water from soil to the leaves of a tree ? (CPMT 1989, MPPMT 1989)
  • Root pressure
  • Cohesion of water and transpiration pull
  • Capillary rise of water inside xylem
  • Hydrolysis of ATP
Answer: Hydrolysis of ATP
Q15 | Cohesive force of water is due to (EAMCET 1989, EPMT 2005)
  • O-bond
  • OH-bonds
  • S-bonds
  • H-bonds
Answer: S-bonds
Q16 | Diffusion of water through selectively permeable membrane is (CPMT 1993)
  • Diffusion
  • Imbibation
  • Osmosis
  • Translocation
Answer: Osmosis
Q17 | A higher plant cell covered with cutin and suberin is placed in water, after 15 minutes, the cell (BHU 1993)
  • Will be killed
  • Size will increase
  • Size will remain unchanged
  • Size will decrease
Answer: Size will decrease
Q18 | Plant cell kept in hypertonic solution will get (MPPMT 1994)
  • Lysed
  • Turgid
  • Deplasmolysed
  • Plasmoysed
Answer: Turgid
Q19 | The movement of free atoms from higher concentration to lower concentration is called. (RPMT 1995)
  • Osmosi
  • Diffusion
  • Endosmosis
  • Exosmosis
Answer: Osmosi
Q20 | Plasmolysis is due to (CPMT 1995)
  • Exosmosi
  • Endosmosis
  • Osmosis
  • Adsorption
Answer: Osmosis
Q21 | Cotton fibres dipped in water absorb water through (RPMT 1996)
  • Endosmosi
  • Exosmosis
  • Capillarity
  • Imbibition
Answer: Exosmosis
Q22 | With rise in turgidity, wall pressure will (CBSE 1997)
  • Decrease
  • Increase
  • Fluctuate
  • Remain unchanged
Answer: Decrease
Q23 | Root pressur is due to (MPPMT 1993, Har. PMT 2003, Orissa 2011)
  • Active absorption
  • Passive absorption
  • Increased transpiration
  • Increased photosynthesis
Answer: Increased photosynthesis
Q24 | Adding solute to pure water will cause development of (MPPMT 2001)
  • Positive water potential
  • More positive water potential decreases ? S
  • More negative water potential will not change ? S
  • Negative water potential
Answer: Positive water potential
Q25 | Rate of transpiration is highest when (JKCMEE 2000)
  • Soil is wet and air is dry
  • Soil is wet and air is hunid
  • Soil is dry and air is humid
  • Both soil and air are dry.
Answer: Soil is dry and air is humid
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