Identify the correct match of the type of water given in column-I and its character in column-II and select the correct option. Column-I Column-II (i) Capillary water (a) present in the form of hydrated oxides of silicon and aluminium. (ii) Hygroscopic water (b) goes down through large pores between soil particles and reaches the water table. (iii) Combined water (c) held in between small non-colloidal soil particles. (iv) Gravitational water (d) held tightly around soil particles by adhesive forces.

(i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)

(i)-(c), (ii)-(d), (iii)-(b), (iv)-(a)

(i)-(c), (ii)-(a), (iii)-(b), (iv)-(d)

(i)-(c), (ii)-(b), (iii)-(d), (iv)-(a)

Match List - I with List - II. List-I List-II (a) Cohesion (i) More attraction in liquid phase (b) Adhesion (ii) Mutual attraction among water molecules (c) Surface tension (iii) Water loss in liquid phase (d) Guttation (iv) Attraction towards polar surfaces

( a ) - ( ii ) ; ( b ) - ( iv ) ; ( c ) - ( i ) ; ( d ) - ( iii )

( a ) - ( iii ) ; ( b ) - ( iv ) ; ( c ) - ( ii ) ; ( d ) - ( i )

( a ) - ( iii ) ; ( b ) - ( i ) ; ( c ) - ( iv ) ; ( d ) - ( ii )

( a ) - ( ii ) ; ( b ) - ( i ) ; ( c ) - ( iv ) ; ( d ) - ( iii )

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Transpiration reduces the hydrostatic pressure in the xylem and water moves into the root and across the root cortex in response to the pressure gradient so produced.

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Important Questions on Transport in Plants

HARD

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

A submarine has a window of area

30 \times 30 {cm}^{2}

on its ceiling and is at a depth of

100 m

below sea level in a sea. If the pressure inside the submarine is maintained at the sea-level atmosphere pressure, then the force acting on the window is (consider density of sea water

= 1.03 \times 10^{3} kg m^{- 3}

acceleration due to gravity

= 10 m s^{- 2}

HARD

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

How does ascent of sap takes place in tall trees?

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Which of the following is not observed during the apoplastic pathway?

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Match List I with List II:

List I	List II
A. Cohesion	I. More attraction in liquid phase
B. Adhesion	II. Mutual attraction among water molecules
C. Surface tension	III. Water loss in liquid phase
D. Guttation	IV. Attraction towards polar surfaces

Choose the correct answer from the options given below:

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Identify the correct match of the type of water given in column-I and its character in column-II and select the correct option.

Column-I		Column-II
(i)	Capillary water	(a)	present in the form of hydrated oxides of silicon and aluminium.
(ii)	Hygroscopic water	(b)	goes down through large pores between soil particles and reaches the water table.
(iii)	Combined water	(c)	held in between small non-colloidal soil particles.
(iv)	Gravitational water	(d)	held tightly around soil particles by adhesive forces.

HARD

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

How does ascent of sap occur in tall tree?

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Explain apoplast pathway of water in plants. Draw a diagram to show major paths of water flow in plant cells.

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Root pressure is usually acidic because:

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Match List - I with List - II.

List-I		List-II
(a)	Cohesion	(i)	More attraction in liquid phase
(b)	Adhesion	(ii)	Mutual attraction among water molecules
(c)	Surface tension	(iii)	Water loss in liquid phase
(d)	Guttation	(iv)	Attraction towards polar surfaces

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Assertion (A): In the apoplast pathway, water movement is ultimately symplastic in the endodermis

Reason (R): Root endodermal cells are suberized

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

If the humidity of the atmosphere suddenly increases substantially, the water flow in the xylem will-

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

A column of water within xylem vessels of tall trees does not break under its weight because of:

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

The tangential, as well as radial walls of the endodermal cells, have a deposition of water-impermeable, waxy material suberin in the form of

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Movement of water through cell wall, is

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

The physical properties of water like cohesion, adhesion and surface tension are responsible for

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

How many structures/features are associated with apoplastic movement of water?

Question Image

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Passive absorption of water is related to all, except

HARD

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Path of water movement from soil to exarch xylem is

EASY

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

The flow of water upward through the xylem in plants can achieve fairly high rates up to

MEDIUM

Biology>Plant Physiology>Transport in Plants>Long Distance Transport of Water

Set up an experiment to demonstrate root pressure?

Transpiration reduces the hydrostatic pressure in the xylem and water moves into the root and across the root cortex in response to the pressure gradient so produced.

Important Questions on Transport in Plants

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