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)

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During the opening of stomata, the organic malate ions are produced in the guard cells for maintaining the

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Important Questions on Transport in Plants

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

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

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

Study the diagram and the list given below.

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i) Chloroplast

ii) Epidermal cell

iii) Guard cell

iv) Subsidiary cell

v) Stomatal pore

The correct match is

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.

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

Take two plants, keep plant

A

in very dry conditions and plant

B

in high humidity. Simultaneously, immerse the roots of both plants in water with a red dye. What would you observe?

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

Which of the following facilitates opening of stomatal aperture?

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.

Question Image

Choose the correct combination.

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

Stomatal movement is not affected by

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

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

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.

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:

EASY

Biology>Plant Physiology>Transport in Plants>Transpiration

Stomata in grass leaf are

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

What is Guard Cell Photosynthetic Theory?

HARD

Biology>Plant Physiology>Transport in Plants>Transpiration

Difference between the following: Osmotic pressure and Osmotic potential.

MEDIUM

Biology>Plant Physiology>Transport in Plants>Transpiration

What is the function of guard cell?