Transport in Plants: MCQs Test – 2 2

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NEET Biology MCQs | Online MCQs test on NEET Transport in Plants | Solve this online test and get your instant score and answers | Test No. 2

Transport in Plants: MCQs Test - 2

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Question 1

Stomata open is due to accumulation of

A	K+
B	Na+
C	Ca+
D	Mg+

Question 2

Attraction of water molecules to polar surfaces is known as

A	Cohesion
B	Capillarity
C	Surface tension
D	Adhesion

Question 3

Which of the following is not a purpose of transpiration?

A	Supplies water for photosynthesis
B	Helps in translocation of sugars from source to sink
C	Maintains shape and structure of the plants
D	Transports minerals from the soil to all parts of the plant

Question 4

A soil sample is found to have 25% of its volume occupied by soil water. Of this, 10% is hygroscopic water and .the remaining is capillary water. What is the field capacity of this soil?

A	10%
B	15%
C	25%
D	35%

Question 5

When the conditions are dry, a grass leaf curls inward to minimize water loss due to presence of

A	Thick cuticle
B	Large xylem cavities
C	Parallel venation
D	Bulliform cells

Question 6

Cohesion theory of water movement in plants was put forth by

A	Henry Dixon
B	F. F. Blackman
C	Melvin cycle
D	Hans. A. Krebs

Question 7

Which of the following force is responsible for raising water up to 100 m of tall plants?

A	Root pressure
B	Capillary action
C	Transpiration pull
D	Air pressure

Question 8

The first process by which water enters into the seed coat when a seed is placed in suitable environment for germination is

A	Osmosis
B	Imbibition
C	Absorption
D	None of these

Question 9

When the concentration of the soil solutes is low, the absorption of water is

A	Remain normal
B	Decreased
C	Increased
D	Stopped

Question 10

When pea seeds and wheat grains are soaked in water, pea seeds showed more swelling than the wheat. The reason is

A	Cell membrane of pea seeds is more permeable
B	Presence of less hydrophilic colloids in the wheat grains
C	Imbibition capacity of proteins is more than that of starch
D	Cell walls of wheat grains are less permeable

Question 11

Which one of the following denotes the water potential of the mesophyll cell in wilted condition?

A	Greater than the value of its osmotic potential
B	Equal to the value of pressure potential
C	Equal to the value of osmotic potential
D	Equal to zero

Question 12

Identify the correct relationship with reference to water potential of a plant cell.

A	ψw = ψm + ψs + ψp
B	ψw = ψm + (ψs – ψp)
C	ψw = ψm – (ψs + ψp)
D	ψw = ψm – ψs – ψp

Question 13

Study the following lists and choose the correct option.

	List - I		List - II
A.	Water potential of 10% salt solution	I.	Positive
B.	Pressure potential in a normal cell	II.	Negative
C.	Pressure potential in a plasmolysed cell	III.	Positive
C.	Metric potential on the surface of the wood	IV.	Negative
		V.	Zero

The correct match is :

A	A - II, B - III, C - V, D - IV
B	A - III, B - IV, C - II, D - I
C	A - I, B - II, C - IV, D - III
D	A - V, B - IV, C - II, D - I

Question 14

The values osmotic potential 'π' and pressure potential 'ρ' of cells A, B, C and D are given below:

Cell	π	ρ
Cell A	–1.0	0.5
Cell B	–0.6	0.3
Cell C	–1.2	0.6
Cell D	–0.8	0.4

Identify the correct sequence that shows the path of movement of water from among the following:

A	D → C → A → B
B	B → D → A → C
C	B → C → D → A
D	C → B → A → D

Question 15

Study the following table:

(I) Peperomia - Leaf succulent - Leaf epidermal cells store water

(II) Calotropis - Non-succulent - Root cells with thickened cell walls

(III) Tribulus - Ephemeral - Stem stores water

(IV) Ammophila - Dicot plant - Rolling in of leaves to check water loss

Identify the correct pair of answers.

A	I, II
B	I, III
C	II, III
D	II, IV

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