Potometer works on the principle of (a) osmotic pressure (b) amount of water absorbed equals the amount transpired (c) root pressure (d) potential difference between the tip of the tube and that of the plant.

Potometer works on the principle of
(a) osmotic pressure
(b) amount of water absorbed equals the amount
transpired
(c) root pressure
(d) potential difference between the tip of the tube
and that of the plant.
by

1 Answer

Answer :

(b) amount of water absorbed equals the amount
transpired
by

Related questions

Root pressure develops due to (a) passive absorption (b) active absorption (c) increase in transpiration (d) low osmotic potential in soil.

Description : Root pressure develops due to (a) passive absorption (b) active absorption (c) increase in transpiration (d) low osmotic potential in soil.

Last Answer : (b) active absorption

In plant-water relationships, symbol ‘YW’ is used to represent (1) Osmotic pressure (2) Water potential (3) Solute potential (4) Osmosis

Description : In plant-water relationships, symbol ‘YW’ is used to represent (1) Osmotic pressure (2) Water potential (3) Solute potential (4) Osmosis

Last Answer : Water potential

When a cell is fully turgid, which of the following will be zero? (a) Turgor pressure (b) Water potential (c) Wall pressure (d) Osmotic pressure

Description : When a cell is fully turgid, which of the following will be zero? (a) Turgor pressure (b) Water potential (c) Wall pressure (d) Osmotic pressure

Last Answer : (b) Water potential

Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Description : Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Last Answer : (2) Capillary pressure Explanation: In plants, the transpiration stream is the uninterrupted stream of water, and other, which is taken up by the roots and, via the xylem vessels, ... the difference in water potential between the soil and the substomatal cavity caused by transpiration.

Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Description : Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Last Answer : Capillary pressure

Differentiate between Osmotic Pressure and Osmotic Potential. -Biology

Description : Differentiate between Osmotic Pressure and Osmotic Potential. -Biology

Last Answer : answer:

Oncotic pressure refers to a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin. b) the number of dissolved particles contained in a unit of fluid. Osmolality refers to the number of dissolved particles contained in a unit of fluid. c) the excretion of substances such as glucose through increased urine output. Osmotic diuresis occurs when the urine output increases due to excretion of substances such as glucose. d) the amount of pressure needed to stop flow of water by osmosis. Osmotic pressure is the amount of pressure needed to stop the flow of water by osmosis.

Description : Oncotic pressure refers to a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin. b) the number of dissolved particles contained in a ... . Osmotic pressure is the amount of pressure needed to stop the flow of water by osmosis.

Last Answer : a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin.

Soil salinity is measured by: (a) Potometer (b) Porometer (c) Conductivity meter (d) Calorimeter

Description : Soil salinity is measured by: (a) Potometer (b) Porometer (c) Conductivity meter (d) Calorimeter

Last Answer : Ans. ((c))

Auxin can be bioassayed by (a) potometer (b) lettuce hypocotyl elongation (c) Avena coleoptile curvature (d) hydroponics.

Description : Auxin can be bioassayed by (a) potometer (b) lettuce hypocotyl elongation (c) Avena coleoptile curvature (d) hydroponics.

Last Answer : (c) Avena coleoptile curvature

Apparatus to measure rate of respiration and R.Q. is (a) auxanometer (b) potometer (c) respirometer (d) manometer.

Description : Apparatus to measure rate of respiration and R.Q. is (a) auxanometer (b) potometer (c) respirometer (d) manometer.

Last Answer : (c) respirometer

Which of the following is used to determine the rate of transpiration in plants? (a) Porometer/Hygrometer (b) Potometer (c) Auxanometer (d) Tensiometer/Barometer

Description : Which of the following is used to determine the rate of transpiration in plants? (a) Porometer/Hygrometer (b) Potometer (c) Auxanometer (d) Tensiometer/Barometer

Last Answer : (b) Potometer

Water potential and osmotic potential of pure water are

Description : Water potential and osmotic potential of pure water are

Last Answer : Water potential and osmotic potential of pure water are A. Zero and zero B. 100 and zero C. 100 and 100 D. zero and 100

The water potential and osmotic potential of pure water are (a) 100 and 200 (b) zero and 100 (c) 100 and zero (d) zero and zero.

Description : The water potential and osmotic potential of pure water are (a) 100 and 200 (b) zero and 100 (c) 100 and zero (d) zero and zero.

Last Answer : (d) zero and zero.

What happens when a chemical bond is formed? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor absorbed Correct (4) Answer – (1) energy is always absorbed Explanation: If a bond is broken, energy is released; and if a bond is formed, energy must have been absorbed. As these occur, a change in the chemical energy of the system also occurs. Within each bond of a molecule is an experimentally determined amount of enemy that upon the breaking of that bond is released into the chemical system. The energy within these bonds are 'stored' and can be easily thought of as potential energy. Upon the breaking of these bonds the energy is released thereby creating usable energy.

Description : What happens when a chemical bond is formed? (1) energy is always absorbed (2) energy in always released (3) more energy is released than is absorbed (4) energy is neither released nor ... as potential energy. Upon the breaking of these bonds the energy is released thereby creating usable energy.

Last Answer : Silver nitrate solution is kept in brown bottles in laboratory because - (1) it reacts with ordinary white bottles (2) brown bottles stops the passage of light through it (3) brown bottles do not react with it (4) brown bottles react with it

A fountain pen works on the principle of (1) Flow of liquids from higher to lower potential (2) Capillary action (3) Bernoulli's principle (4) Viscosity of liquids

Description : A fountain pen works on the principle of (1) Flow of liquids from higher to lower potential (2) Capillary action (3) Bernoulli's principle (4) Viscosity of liquids

Last Answer : (2) Capillary action Explanation: A fountain pen is a nib pen that, unlike its predecessor the dip pen, contains an internal reservoir of water-based liquid ink. The pen draws ink from the ... to flow in narrow spaces without the assistance of, and in opposition to external forces like gravity.

A fountain pen works on the principle of (1) flow of liquids from higher to lower potential (2) capillary action (3) Bernoulli’s principle (4) Viscosity of liquids

Description : A fountain pen works on the principle of (1) flow of liquids from higher to lower potential (2) capillary action (3) Bernoulli’s principle (4) Viscosity of liquids

Last Answer : capillary action

Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the (A) Osmotic pressure of the soil water becomes less than that of the plant sap (B) Soil becomes too alkaline (C) Osmotic pressure of the soil water becomes higher than that of the plant sap (D) Soil becomes too acidic

Description : Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the (A) Osmotic pressure of the soil water becomes less than that of the plant sap (B) Soil ... pressure of the soil water becomes higher than that of the plant sap (D) Soil becomes too acidic

Last Answer : (C) Osmotic pressure of the soil water becomes higher than that of the plant sa

The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is (a) transpiration (b) root pressure (c) imbibition (d) plasmolysis.

Description : The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is (a) transpiration (b) root pressure (c) imbibition (d) plasmolysis.

Last Answer : b) root pressure

A vacuum cleaner works on the principle of pressure difference. On the moon it will – (1) work as efficiently as on the earth (2) not work at all (3) work with reduced efficiency (4) work with increased efficiency

Description : A vacuum cleaner works on the principle of pressure difference. On the moon it will – (1) work as efficiently as on the earth (2) not work at all (3) work with reduced efficiency (4) work with increased efficiency

Last Answer : (2) not work at all Explanation: Vacuum cleaners work by creating a lower pressure just inside the opening which touches the floor. By creating a low pressure inside the machine, higher air pressure in the room pushes its way into the vacuum cleaner, taking the dirt with it.

A vacuum cleaner works on the principle of pressure difference. On the moon it will (1) work as efficiently as on the earth (2) not work at all (3) work with reduced efficiency (4) work with increased efficiency

Description : A vacuum cleaner works on the principle of pressure difference. On the moon it will (1) work as efficiently as on the earth (2) not work at all (3) work with reduced efficiency (4) work with increased efficiency

Last Answer :  not work at all

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?a) 42b) 63c) 84d) 21

Description : What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?a) 42b) 63c) 84d) 21

Last Answer : b) 63

Colloid osmotic pressure of intracellular fluid is (A) Equal to that of plasma (B) More than that of plasma (C) More than that of plasma (D) Nearly zero WATER AND ELECTROLYTE BALANCE 285

Description : Colloid osmotic pressure of intracellular fluid is (A) Equal to that of plasma (B) More than that of plasma (C) More than that of plasma (D) Nearly zero WATER AND ELECTROLYTE BALANCE 285

Last Answer : Answer : B

Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be (a) no movement of water(b) equilibrium between the two (c) movement of water from cell A to B (d) movement of water from cell B to A.

Description : Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure ... two (c) movement of water from cell A to B (d) movement of water from cell B to A.

Last Answer : (c) movement of water from cell A to B

An osmotic diuretic, such as Mannitol, is given to the patient with increased intracranial pressure (IICP) in order to a) dehydrate the brain and reduce cerebral edema. Osmotic diuretics draw water across intact membranes, thereby reducing the volume of brain and extracellular fluid.

Description : An osmotic diuretic, such as Mannitol, is given to the patient with increased intracranial pressure (IICP) in order to a) dehydrate the brain and reduce cerebral edema. Osmotic diuretics ... Medications such as barbiturates are given to the patient with IICP to reduce cellular metabolic demands.

Last Answer : a) dehydrate the brain and reduce cerebral edema. Osmotic diuretics draw water across intact membranes, thereby reducing the volume of brain and extracellular fluid.

Choose the correct statement about osmotic diuretics: A. They are large molecular weight substances which form colloidal solution B. Their primary site of action is collecting ducts in the kidney C. They increase water excretion without increasing salt excretion D. They can lower intraocular pressure

Description : Choose the correct statement about osmotic diuretics: A. They are large molecular weight substances which form colloidal solution B. Their primary site of action is collecting ducts in the ... C. They increase water excretion without increasing salt excretion D. They can lower intraocular pressure

Last Answer : D. They can lower intraocular pressure

In which part of the digestive tube is water is chiefly absorbed? What about the mineral ions and vitamins?

Description : In which part of the digestive tube is water is chiefly absorbed? What about the mineral ions and vitamins?

Last Answer : Most part of water, vitamins and mineral ions are absorbed by the small intestine. The large intestine, however, is responsible for the reabsorption of nearly 10% of the ingested water, an ... gives consistency to feces (colon diseases can cause diarrhea). Digestion System - Image Diversity: colon

Osmotic pressure is maintained by blood colloid

Description : Osmotic pressure is maintained by blood colloid

Last Answer : Osmotic pressure is maintained by blood colloid A. Albumin B. Globulin C. Fibrinogen D. Thrombin

Blood colloidal osmotic pressure mainly maintained by which plasma protein `:-`

Description : Blood colloidal osmotic pressure mainly maintained by which plasma protein `:-`

Last Answer : Blood colloidal osmotic pressure mainly maintained by which plasma protein `:-` A. Globulin B. Albumin C. Fibrinogen D. Prothombin

$ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic pressure.

Description : $ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic pressure.

Last Answer : $ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic ... D. If both As and R are wrong.

Contribution of albumin to colloid osmotic pressure of plasma is about (A) 10% (B) 50% (C) 80% (D) 90%

Description : Contribution of albumin to colloid osmotic pressure of plasma is about (A) 10% (B) 50% (C) 80% (D) 90%

Last Answer : Answer : C

Osmotic pressure of plasma is (A) 80–100 milliosmole/litre (B) 180–200 milliosmole/litre (C) 280–300 milliosmole/litre (D) 380–400 milliosmole/litre

Description : Osmotic pressure of plasma is (A) 80–100 milliosmole/litre (B) 180–200 milliosmole/litre (C) 280–300 milliosmole/litre (D) 380–400 milliosmole/litre

Last Answer : Answer : C

What is osmotic pressure ?

Description : What is osmotic pressure ?

Last Answer : Osmotic pressure is the pressure created in a aqueous solution by a region of lower solute concentration upon a region of higher solute concentration forcing the passage of water from that to this more ... a semipermeable membrane but it creates a compensatory flux of water in the opposite way.

The haemodialyzer has semi-permeable lining of tubes which help to: (a) To maintain osmotic pressure of blood. (b) To filter nitrogenous wastes from the dialyzing solution. (c) In passing the waste product, in the dialyzing solution. (d) To pump purified blood back into the body of the patient.

Description : The haemodialyzer has semi-permeable lining of tubes which help to: (a) To maintain osmotic pressure of blood. (b) To filter nitrogenous wastes from the dialyzing solution. (c) In passing the waste product, in the dialyzing solution. (d) To pump purified blood back into the body of the patient.

Last Answer : (c) In passing the waste product, in the dialyzing solution.

Define osmotic pressure.

Description : Define osmotic pressure.

Last Answer : Ans:- The extra pressure that must be applied to the solution side to prevent the flow of solvent molecules into solution through a semi permeable membrane is called osmotic pressure.

Out of (a) 200 ml of 2 M NaCl Soln. and (b) 200 ml of 1 M glucose Soln. which one has higher osmotic pressure?

Description : Out of (a) 200 ml of 2 M NaCl Soln. and (b) 200 ml of 1 M glucose Soln. which one has higher osmotic pressure?

Last Answer : (a) 200 ml of 2 M NaCl Soln. NaCl is an electrolyte which dissolve to give ions. Glucose and urea are non electrolytes. Thus glucose has minimum conc. and hence minimum osmotic pressure.

The given figure is the diagrammatic representation of the E. coli vector pBR322. Which one of the given options correctly identifies its certain component(s)? Bam H1 Sal 1 Pvu II rop ori Pst I Pvu I Eco R I Cla Hin d III tet ampR R (a) ori-original restriction enzyme (b) rop-reduced osmotic pressure (c) HindIII, EcoRI - selectable markers (d) ampR, tetR–antibiotic resistance genes

Description : The given figure is the diagrammatic representation of the E. coli vector pBR322. Which one of the given options correctly identifies its certain component(s)? Bam H1 Sal 1 Pvu II rop ... reduced osmotic pressure (c) HindIII, EcoRI - selectable markers (d) ampR, tetR-antibiotic resistance genes

Last Answer : (d) ampR, tetR–antibiotic resistance genes

If a bathing fluid has the same osmotic pressure than the cell it called a. Isotonic b. Hypertonic c. hypotonic d. all

Description : If a bathing fluid has the same osmotic pressure than the cell it called a. Isotonic b. Hypertonic c. hypotonic d. all

Last Answer : Isotonic

If a bathing fluid has higher osmotic pressure than the cell it is called a. Isotonic b. hypotonic c. hypertonic d. all

Description : If a bathing fluid has higher osmotic pressure than the cell it is called a. Isotonic b. hypotonic c. hypertonic d. all

Last Answer : hypertonic

If a bathing fluid has a lower osmotic pressure than the cell, it is called a. Isotonic b. hypotonic c. hypertonic d. All

Description : If a bathing fluid has a lower osmotic pressure than the cell, it is called a. Isotonic b. hypotonic c. hypertonic d. All

Last Answer : hypotonic

Bacterial cells susceptible to penicillium can be protected from destruction if the medium in which they are exposed is of A- high osmotic pressure B- low osmotic pressure C- moderate osmotic pressure D- high surface tension

Description : Bacterial cells susceptible to penicillium can be protected from destruction if the medium in which they are exposed is of A- high osmotic pressure B- low osmotic pressure C- moderate osmotic pressure D- high surface tension

Last Answer : high osmotic pressure

What is the function of the cell envelope? a. growth and reproduction b. protection from osmotic pressure c. sensing and responding to the environment d. acquiring nutrients

Description : What is the function of the cell envelope? a. growth and reproduction b. protection from osmotic pressure c. sensing and responding to the environment d. acquiring nutrients

Last Answer : b. protection from osmotic pressure

Transmission of fluid in dentinal tubules is by: A. Hydrodynamic pressure (Osmotic) B. Mechanical

Description : Transmission of fluid in dentinal tubules is by: A. Hydrodynamic pressure (Osmotic) B. Mechanical

Last Answer : A. Hydrodynamic pressure (Osmotic)

Trichloroacetic acid, a strong acid, has been used by dentists for chemical cautery of hypertrophic tissue and aphthous ulcers; its mechanism of action is, BOUCHERS P 194 A. Thermodynamic action B. Activation of tissue enzymes C. Osmotic pressure D. Protein precipitation (PPT) E. Neutralization

Description : Trichloroacetic acid, a strong acid, has been used by dentists for chemical cautery of hypertrophic tissue and aphthous ulcers; its mechanism of action is, BOUCHERS P 194 A. Thermodynamic ... Activation of tissue enzymes C. Osmotic pressure D. Protein precipitation (PPT) E. Neutralization

Last Answer : D. Protein precipitation (PPT)

Which of the following properties is lower for a solution than for the pure solvent? w) osmotic pressure x) vapor pressure y) temperature z) boiling point

Description : Which of the following properties is lower for a solution than for the pure solvent? w) osmotic pressure x) vapor pressure y) temperature z) boiling point

Last Answer : ANSWER: X -- VAPOR PRESSURE

The force responsible for drops of liquid assuming a spherical shape is known as: w) strong nuclear force x) Van der Waals attraction y) surface tension z) osmotic pressure

Description : The force responsible for drops of liquid assuming a spherical shape is known as: w) strong nuclear force x) Van der Waals attraction y) surface tension z) osmotic pressure

Last Answer : ANSWER: Y -- SURFACE TENSION

One property a colloidal dispersion has that a solution does not is: w) homogeneity x) filterability y) the Tyndall effect z) osmotic pressure

Description : One property a colloidal dispersion has that a solution does not is: w) homogeneity x) filterability y) the Tyndall effect z) osmotic pressure

Last Answer : ANSWER: Y -- THE TYNDALL EFFECT 

Sum of e.m.f around any loop equals A. sum of current B. sum of potential difference C. sum of resistances D. sum of charges passing through it per second

Description : Sum of e.m.f around any loop equals A. sum of current B. sum of potential difference C. sum of resistances D. sum of charges passing through it per second

Last Answer : sum of potential difference

When the potential difference across a membrane of a neuron equals the threshold, what results? a) movement of the membrane b) action potential c) relaxation d) contraction

Description : When the potential difference across a membrane of a neuron equals the threshold, what results? a) movement of the membrane b) action potential c) relaxation d) contraction

Last Answer : ANSWER: B -- ACTION POTENTIAL 

Which of the following illustrations is not based on the principle of pressure? (a) Swelling of raisins in water (b) Collecting lotion with an eye dropper (c) Bursting of a cycle tube in summer (d) Rise I water in a drinking straw

Description : Which of the following illustrations is not based on the principle of pressure? (a) Swelling of raisins in water (b) Collecting lotion with an eye dropper (c) Bursting of a cycle tube in summer (d) Rise I water in a drinking straw

Last Answer : Ans:(a)

What is long folded tube inside the body attached to the stomach where nutrients in the food are absorbed?

Description : What is long folded tube inside the body attached to the stomach where nutrients in the food are absorbed?

Last Answer : Small intestine is where 90% of nutrients are absorbed.