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 )

EASY

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The cohesion-tension transpiration pull model given by Dixon and Jolly explains

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Important Questions on Transport in Plants

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

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:

HARD

Biology>Plant Physiology>Transport in Plants>Transpiration

How does ascent of sap takes place in tall trees?

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

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

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

Which one gives the most valid and recent explanation for stomatal movements?

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

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.

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

Transpiration and root pressure cause water to rise in plants by:

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

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>Transpiration

Given below is a diagram of the stomatal apparatus. Match the labels with the corresponding names of the compounds.

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Choose the correct combination.

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

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>Transpiration

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

Reason (R): Root endodermal cells are suberized

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange these plants in the order (faster to slowest) in which they will dry up.

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

Root pressure is usually acidic because:

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

Which of the following facilitates opening of stomatal aperture?

HARD

Biology>Plant Physiology>Transport in Plants>Transpiration

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options:

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

Study the diagram and the list given below.

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