1149 + Interview Questions in TRANSPORT-IN-PLANTS IN GENERAL AWARENESS Page 13 InterviewSolution

601.	A cell placed in a solution gets deplasmolysed.The solution isA. HypotonicB. HypertonicC. IsotonicD. Ditonic
Answer» Correct Answer - A A cell placed in a solution get deplasmolysed . The solution is hypotonic

Discussion

602.	If a cell kept in a solution of unknown concentration gets deplasmolysed, the solution isA. hyptonicB. hypertonicC. isotonicD. detonic
Answer» Correct Answer - A

Discussion

603.	Swelling of gums on being placed in mositened environment confirmsA. diffusionB. imbibitionC. endosmosisD. exosmosis
Answer» Correct Answer - B

Discussion

604.	In apoplast pathway water moves exclusively through theA. plasmodesmataB. cell wallsC. intercellur spacesD. both`(b)` and `(c)`.
Answer» Correct Answer - D Apoplast pathway consists of non-living parts of plant body `i.e.` cell walls and intercellular spaces. In apoplast pathway, water passes from root hair to xylem through the walls of inervening cells without crossing any membrane or cytoplasm. The pathway provides the least resistance to movement of water . However it is interrupted by the presence of impermeable ligno-suberin Casparian strips in the walls of endodermal cells.

Discussion

605.	Phytohormore connected with closing of stomata isA. ABAB. KinetinC. GAD. IBA.
Answer» Correct Answer - A

Discussion

606.	In the resting state of the neutral membrane, diffusion due to concentration gradients, if allowed would drive.A. `Na^(+)` into the cellB. `Na^(+)` out of the cellC. `K^(+)` into the cellD. K^(+)` and `Na^(+)` out of the cell
Answer» Correct Answer - a

Discussion

607.	Concentration of water molecules in a system determinesA. Uphill transport rateB. Number of carrier proteinsC. Water potential of the systemD. Membrane permeability
Answer» Correct Answer - C

Discussion

608.	Aquaporins are transport channels, which I. are found in both plants and animals. II. Allow for faster water movement between the cells than osmosis. III. Allow water molecules to pass during transpiration. IV. Do not open during drought stress.A. III and IVB. Only IIC. Only IIID. I and II
Answer» Correct Answer - D

Discussion

609.	the experiment, which demonstrates that xylem is the main water conducting tissue is I. stain test. II.bottleneck experiment. III. Ringing test. IV. Swan bottleneck experiment.A. I and IIIB. I and IVC. II, III and IVD. All of these
Answer» Correct Answer - A

Discussion

610.	Glucose is not stored in plant due toA. Decrease in osmotic pressureB. Increases in osmotic pressureC. Increases in turgor pressureD. Decreases in turgor pressure
Answer» Correct Answer - B

Discussion

611.	Which of the following is done during ringing experimentA. Bark is removedB. Xylem is removedC. Pith is removedD. All the above
Answer» Correct Answer - A

Discussion

612.	Which of the following is done during ringing experimentA. Bark is removedB. Xylem is removedC. Pith is removedD. All of the above
Answer» Correct Answer - A Bark is removed, during ringing or girdling experiment.

Discussion

613.	Which of the following is done during ringing experimentA. bark is removedB. pith is removedC. xylem is removedD. all of these
Answer» Correct Answer - d

Discussion

614.	Physical force theory explainsA. Non-living cells are not essential for ascent of sapB. Living cells are not essential for ascent of sapC. Ascent of sap may occur in both living and non-living cellsD. Both (b) and ( c)
Answer» Correct Answer - A

Discussion

615.	A man supplied excess fertiliser and watered the grass well. After sometime, the leaves turned brown becauseA. osmosis occurred in root and the plant diesB. fertilisers were drained in lower layer of soilC. it decreased photosynthesisD. due to water logging of soil
Answer» Correct Answer - A

Discussion

616.	When chemical fertilisers are given to plants, the soil is to be throughly watered otherwise the plants get killed because ofA. Toxic effects of chemical (fertilisers ) compoundsB. Plasmolysis due to high concentration of fertilisersC. Failure of physiological process like photosynthesis and respirationD. None of the above
Answer» Correct Answer - B

Discussion

617.	The direction of water in the leaflets of Cycas from midrib isA. UpwardB. DownwardC. LateralD. Both A and B.
Answer» Correct Answer - C

Discussion

618.	Stomatal mechanism operates in response toA. TemperatureB. LightC. Soil moistureD. Atmospheric humidity
Answer» Correct Answer - B

Discussion

619.	The water potential of pure water isA. ZeroB. Less than zeroC. More than zero but less than oneD. More than one
Answer» Correct Answer - A

Discussion

620.	What is the chemical composition of of xylem and phloem sap ?
Answer» Xylem sap consists of mainly water and some solutes or mineral nutrients. Phloem sap mainly consists of the sucrose, a kind of transport sugar which is a diasaccharide, hormones and amino acids are also found in phloem sap of the plants

Discussion

621.	When pea seeds and wheat seeds are put in water , which of the two will imbible more water ?A. Wheat seedsB. Pea seedsC. Both will imbibe equal amount of water .D. pea seeds imbibe water only at alkaline pH.
Answer» Correct Answer - B

Discussion

622.	Another term used to indicate imbibition pressure isA. matric potentialB. absorption potentialC. turgor potentialD. chemical potential
Answer» Correct Answer - A

Discussion

623.	Mushroom buttons and grass sees often break the asphalt and concrete pavements due toA. diffusion pressureB. root pressureC. imbibition pressureD. plasmolysis
Answer» Correct Answer - C

Discussion

624.	Root pressure is due toA. active absorption/transportB. passive absorption/transportC. increased transpiratonD. increased photosynthesis
Answer» Correct Answer - A

Discussion

625.	Choose the correct option Mycorrhiza is a symbiotic association of fungus with root system which helps in `A`. absorption of water `B`. mineral nutrition `C.` translocation `D`.gaseous exchange.A. Only IB. Only IIC. I and IID. II and III
Answer» Correct Answer - B

Discussion

626.	The apoplast is locatedA. outside the plasma membraneB. in the entire eytosolC. on both sides of plasma membraneD. in the plastidial content
Answer» Correct Answer - A

Discussion

627.	Water absorption of root hairs occurs untilA. Concentration of water in the cell sap is higherB. Salt concentration in cell sap is higherC. They are separated from the soil by a selectively permeable membraneD. Water potential is lower
Answer» Correct Answer - D Water absorbed by root hairs occurs until water popassive absorption.

Discussion

628.	Apoplast is the system of adjacent cell walls that is continuous throughout the plant execpt at theA. PlasmodesmataB. Vessel elementsC. Casparian strips of endodermisD. Tracheids
Answer» Correct Answer - C Apoplast is the system of adjacent cell walls that is continuous throughout the plant except at the casparian strips of endodermis

Discussion

629.	Identify the process taking place in this experimnet A. ringing experimnet for translocation of sapB. demonstration of root pressureC. eosin test ot demonstrate ascent of sapD. demonsatation of transpiration
Answer» Correct Answer - a

Discussion

630.	The speed of water absorption will be greater ifA. The difference between osmotic pressure of soil water and that of xylem vessels is always moreB. The difference between osmotic pressure of soil water and that of xylem vessels is always moreC. The osmotic pressure of soil water is always more than that of xylem vesselsD. The osmotic pressure of soil water is always less than that of xylem vessles
Answer» Correct Answer - b

Discussion

631.	A column of water within xylem vessels of tall trees does not break under its weight because ofA. positive root pressureB. dissolved sugars in waterC. tensile strength of waterD. lignificaiton of xylem vessel
Answer» Correct Answer - c

Discussion

632.	The cell wall is permeable and not a semipermeable structure can be best deduced from the passage of water and mineral salts fromA. Soil into periplasmic space of root hairsB. Root hairs to cortical cellsC. Cortical cells to pericycleD. Pericycle to trachea
Answer» Correct Answer - A

Discussion

633.	A column of water within xylem vessels of tall trees does not break under its weight because ofA. dissolved sugar in waterB. tensile strength of waterC. lignification of xylem vesselsD. positive root pressure
Answer» Correct Answer - B

Discussion

634.	Recognise the figure and find out the correct statements This figure showsA. The demonstration of rate by thistle funnle experment.B. The demonstration of the rate of osmosis by potato osmometerC. The demonstration of osmosis by thistle funnel expeimentD. The domonstration of translocation mineral solutes up a plant.
Answer» Correct Answer - C The given figure shows demonstration osmossi by thistle funnel experiment

Discussion

635.	Water potentials of pure water and its soultion areA. 0 and 1B. 0 and 0C. 0 and more than oneD. 0 and less than one
Answer» Correct Answer - D Water potential of pure water and its solution are 0 and less than one respectively

Discussion

636.	Loss of water by cells without external sign of leaf drooping is calledA. nascent wiltingB. temporary wiltingC. incipient wiltingD. permanent wilting
Answer» Correct Answer - C

Discussion

637.	Drooping of leaves due to loss of turgor at noon but recovery in the evening is referred to asA. Termporary wiltingB. Incipient witltingC. Permanent wiltingD. Midday desiccation
Answer» Correct Answer - A

Discussion

638.	Guttation is mainly due toA. Root pressureB. OsmosisC. TranspirationD. Imbibition
Answer» Correct Answer - D Guttaion is mainly due to positive root pressure

Discussion

639.	When a potato piece is kept in a highly concentrated salt solution, thenA. Potato is plasmolysedB. Potato is deplasmolysedC. Potato cells get burstedD. There is no effect due to isotonic solution
Answer» Correct Answer - A

Discussion

640.	When a cell is placed in 0.25 M concentrated suger solution, theere is no change in it. So the external solutionis calledA. HypertonicB. IsotonicC. HypotonicD. None of the above
Answer» Correct Answer - B

Discussion

641.	How can plants be grown limited water supply without compromising on metabolic activites ?
Answer» Under conditions of limited water supply, plants reduce the loss of water through transpiration by shutting down stomata. But they carry out the important life processes like photosynthesis, respiration and transport of food, etc.

Discussion

642.	In plants, water supply is due toA. osmosisB. imbibitionC. guttationD. adhesive force
Answer» Correct Answer - D

Discussion

643.	In plants, water supply is due toA. OsmosisB. ImbibitionC. GuttationD. Adhesion force
Answer» Correct Answer - A

Discussion

644.	Which of following statements does not apply to reverse osmosis?A. it is sued for water purificationB. in this technique pressure greater than osomotic pressure is appied to the systemC. it is a passive processD. it is an active process
Answer» Correct Answer - c

Discussion

645.	Which of following statements does not apply to reverse osmosis?A. It is used for water purificationB. In this technique, pressure greater than osmotic pressure is applied to the systemC. It is a passive processD. It is an active process
Answer» Correct Answer - C

Discussion

646.	Which of following statements does not apply to reverse osmosis?A. It is used for water purificationB. In this technique pressure greater than osmotic pressure is applied to the systemC. It is a passive process.D. It is an active process.
Answer» Correct Answer - C Reverse osmosis is also known as hyperfiltration. It is a technique that allows the removal of water molecules from various contaminants through a semi-permeable membrane. The process requires a driving force, viz, presssure from a pump, to push the fluid through the membrane. Reverse osmosis is used in removing salts from saline water and extra purification of water.

Discussion

647.	Which of following statements does not apply to reverse osmosis?A. It is used for water purifactionB. In this technique, pressure greater than osomotic pressure in applied to the system.C. It is a passive processD. It is an active process
Answer» Correct Answer - c

Discussion

648.	`0.1` M solution of soulte (non-electrolyte ) will have a water potntial ofA. `-2.3` barsB. ZeroC. `2.3` barsD. `22.4` bars
Answer» Correct Answer - A `0.1` M solution of sulute (non-electrolyte) will have a water potential of `-2.3` bars (begative) because all solution have water potential less than zero, i.e., negative

Discussion

649.	In a elegant experiment, if a twing bearing white flowers placed in colured water and had watched it turn colour. This experiment very easily demonstrates thatA. The path of water movement is through xylemB. The path of water movement is through phloemC. The path of food transport is through phleomD. Both A and C
Answer» Correct Answer - A In an elegant experiment, if a twing bearing white flowrs is placed in coloured water and on watching we can see its colour turns. That experiment very easily demonstrates that the path of water movement is through xylem

Discussion

650.	Which contributes most to the transport of water from the soil to the leaves of a tree ?A. Root pressureB. Cohesion of water and transpiration pullC. Capillary rise of water inside xylemD. Both (b) and (c )
Answer» Correct Answer - D

Discussion

Explore topic-wise InterviewSolutions in .

A cell placed in a solution gets deplasmolysed.The solution isA. HypotonicB. HypertonicC. IsotonicD. Ditonic

If a cell kept in a solution of unknown concentration gets deplasmolysed, the solution isA. hyptonicB. hypertonicC. isotonicD. detonic

Swelling of gums on being placed in mositened environment confirmsA. diffusionB. imbibitionC. endosmosisD. exosmosis

In apoplast pathway water moves exclusively through theA. plasmodesmataB. cell wallsC. intercellur spacesD. both`(b)` and `(c)`.

Phytohormore connected with closing of stomata isA. ABAB. KinetinC. GAD. IBA.

In the resting state of the neutral membrane, diffusion due to concentration gradients, if allowed would drive.A. `Na^(+)` into the cellB. `Na^(+)` out of the cellC. `K^(+)` into the cellD. K^(+)` and `Na^(+)` out of the cell

Concentration of water molecules in a system determinesA. Uphill transport rateB. Number of carrier proteinsC. Water potential of the systemD. Membrane permeability

Aquaporins are transport channels, which I. are found in both plants and animals. II. Allow for faster water movement between the cells than osmosis. III. Allow water molecules to pass during transpiration. IV. Do not open during drought stress.A. III and IVB. Only IIC. Only IIID. I and II

the experiment, which demonstrates that xylem is the main water conducting tissue is I. stain test. II.bottleneck experiment. III. Ringing test. IV. Swan bottleneck experiment.A. I and IIIB. I and IVC. II, III and IVD. All of these

Glucose is not stored in plant due toA. Decrease in osmotic pressureB. Increases in osmotic pressureC. Increases in turgor pressureD. Decreases in turgor pressure

Which of the following is done during ringing experimentA. Bark is removedB. Xylem is removedC. Pith is removedD. All the above

Which of the following is done during ringing experimentA. Bark is removedB. Xylem is removedC. Pith is removedD. All of the above

Which of the following is done during ringing experimentA. bark is removedB. pith is removedC. xylem is removedD. all of these

Physical force theory explainsA. Non-living cells are not essential for ascent of sapB. Living cells are not essential for ascent of sapC. Ascent of sap may occur in both living and non-living cellsD. Both (b) and ( c)

A man supplied excess fertiliser and watered the grass well. After sometime, the leaves turned brown becauseA. osmosis occurred in root and the plant diesB. fertilisers were drained in lower layer of soilC. it decreased photosynthesisD. due to water logging of soil

The direction of water in the leaflets of Cycas from midrib isA. UpwardB. DownwardC. LateralD. Both A and B.

Stomatal mechanism operates in response toA. TemperatureB. LightC. Soil moistureD. Atmospheric humidity

The water potential of pure water isA. ZeroB. Less than zeroC. More than zero but less than oneD. More than one

What is the chemical composition of of xylem and phloem sap ?

When pea seeds and wheat seeds are put in water , which of the two will imbible more water ?A. Wheat seedsB. Pea seedsC. Both will imbibe equal amount of water .D. pea seeds imbibe water only at alkaline pH.

Another term used to indicate imbibition pressure isA. matric potentialB. absorption potentialC. turgor potentialD. chemical potential

Mushroom buttons and grass sees often break the asphalt and concrete pavements due toA. diffusion pressureB. root pressureC. imbibition pressureD. plasmolysis

Root pressure is due toA. active absorption/transportB. passive absorption/transportC. increased transpiratonD. increased photosynthesis

Choose the correct option Mycorrhiza is a symbiotic association of fungus with root system which helps in `A`. absorption of water `B`. mineral nutrition `C.` translocation `D`.gaseous exchange.A. Only IB. Only IIC. I and IID. II and III

The apoplast is locatedA. outside the plasma membraneB. in the entire eytosolC. on both sides of plasma membraneD. in the plastidial content

Water absorption of root hairs occurs untilA. Concentration of water in the cell sap is higherB. Salt concentration in cell sap is higherC. They are separated from the soil by a selectively permeable membraneD. Water potential is lower

Apoplast is the system of adjacent cell walls that is continuous throughout the plant execpt at theA. PlasmodesmataB. Vessel elementsC. Casparian strips of endodermisD. Tracheids

Identify the process taking place in this experimnet A. ringing experimnet for translocation of sapB. demonstration of root pressureC. eosin test ot demonstrate ascent of sapD. demonsatation of transpiration

A column of water within xylem vessels of tall trees does not break under its weight because ofA. positive root pressureB. dissolved sugars in waterC. tensile strength of waterD. lignificaiton of xylem vessel

The cell wall is permeable and not a semipermeable structure can be best deduced from the passage of water and mineral salts fromA. Soil into periplasmic space of root hairsB. Root hairs to cortical cellsC. Cortical cells to pericycleD. Pericycle to trachea

A column of water within xylem vessels of tall trees does not break under its weight because ofA. dissolved sugar in waterB. tensile strength of waterC. lignification of xylem vesselsD. positive root pressure

Water potentials of pure water and its soultion areA. 0 and 1B. 0 and 0C. 0 and more than oneD. 0 and less than one

Loss of water by cells without external sign of leaf drooping is calledA. nascent wiltingB. temporary wiltingC. incipient wiltingD. permanent wilting

Drooping of leaves due to loss of turgor at noon but recovery in the evening is referred to asA. Termporary wiltingB. Incipient witltingC. Permanent wiltingD. Midday desiccation

Guttation is mainly due toA. Root pressureB. OsmosisC. TranspirationD. Imbibition

When a potato piece is kept in a highly concentrated salt solution, thenA. Potato is plasmolysedB. Potato is deplasmolysedC. Potato cells get burstedD. There is no effect due to isotonic solution

When a cell is placed in 0.25 M concentrated suger solution, theere is no change in it. So the external solutionis calledA. HypertonicB. IsotonicC. HypotonicD. None of the above

How can plants be grown limited water supply without compromising on metabolic activites ?

In plants, water supply is due toA. osmosisB. imbibitionC. guttationD. adhesive force

In plants, water supply is due toA. OsmosisB. ImbibitionC. GuttationD. Adhesion force

Which of following statements does not apply to reverse osmosis?A. it is sued for water purificationB. in this technique pressure greater than osomotic pressure is appied to the systemC. it is a passive processD. it is an active process

Which of following statements does not apply to reverse osmosis?A. It is used for water purificationB. In this technique, pressure greater than osmotic pressure is applied to the systemC. It is a passive processD. It is an active process

Which of following statements does not apply to reverse osmosis?A. It is used for water purificationB. In this technique pressure greater than osmotic pressure is applied to the systemC. It is a passive process.D. It is an active process.

Which of following statements does not apply to reverse osmosis?A. It is used for water purifactionB. In this technique, pressure greater than osomotic pressure in applied to the system.C. It is a passive processD. It is an active process

`0.1` M solution of soulte (non-electrolyte ) will have a water potntial ofA. `-2.3` barsB. ZeroC. `2.3` barsD. `22.4` bars

Which contributes most to the transport of water from the soil to the leaves of a tree ?A. Root pressureB. Cohesion of water and transpiration pullC. Capillary rise of water inside xylemD. Both (b) and (c )