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)

More than one option is correct

Open during day and close during night

Are found in Bryophyllum and Opuntia

Opens when malic acid is formed during night

EASY

Earn 100

Which of the following cell function for the opening and closing of stomata?

50% studentsanswered this correctly

Important Questions on Life Processes

EASY

Science>Biology>Life Processes>Transportation in Plants

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

EASY

Science>Biology>Life Processes>Transportation in Plants

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

Science>Biology>Life Processes>Transportation in Plants

Stomatal movement is not affected by

MEDIUM

Science>Biology>Life Processes>Transportation in Plants

Study the diagram and the list given below.

Question Image

i) Chloroplast

ii) Epidermal cell

iii) Guard cell

iv) Subsidiary cell

v) Stomatal pore

The correct match is

EASY

Science>Biology>Life Processes>Transportation in Plants

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

MEDIUM

Science>Biology>Life Processes>Transportation in Plants

Which of the following facilitates opening of stomatal aperture?

EASY

Science>Biology>Life Processes>Transportation in Plants

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

Science>Biology>Life Processes>Transportation in Plants

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

Science>Biology>Life Processes>Transportation in Plants

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

Science>Biology>Life Processes>Transportation in Plants

Subsidiary cells have no role in the stomatal transpiration.

MEDIUM

Science>Biology>Life Processes>Transportation in Plants

State the main function of the following:
Guard cells.

MEDIUM

Science>Biology>Life Processes>Transportation in Plants

In anisocytic stomata, the subsidiary cells in which the arrangement remains parallel to the guard cells.

EASY

Science>Biology>Life Processes>Transportation in Plants

Which cells are present in the region of next to guard cells in the body of a plant? (subsidiary cells/parenchyma cells)