Entry Test MCQ :: Transport

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11.

The pressure generated when water enters & inflates plant cells is called ______ potential

A.	Water	B.	Osmotic
C.	Pressure	D.	Solute

12.

The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

A.	Deffusion	B.	Osmosis
C.	Active transport	D.	None of these

13.

_______ potential is the measure of the change in water potential of a system due to the presence of solute molecules.

A.	Osmotic	B.	Pressure
C.	Both of these	D.	None of these

14.

Solute potential is always

A.	plus ve	B.	? ve
C.	plus ve or ? ve	D.	Zero

15.

_______ component of cell wall has grreat affinity with water.

A.	Lignin	B.	Cellulose
C.	Pectin	D.	All of these

16.

Commonly in other plants than tall ones the speed of upward movement of water is

A.	8mh-1	B.	1 mh-1
C.	7 mh-1	D.	4 mh-1

17.

Exceptionally the positive hydrostatic pressure generated by root pressure is about

A.	600 Kpa	B.	800 Kpa
C.	1000 Kpa	D.	900 Kpa

18.

Cuticular transpiration is ______ of total transpiration

A.	6-8%	B.	5-7%
C.	7-9%	D.	4-6%

19.

All plants do not possess

A.	Lenticels	B.	Cuticle
C.	Stomata	D.	All of these

20.

Lenticular transpiration is _________ of total transpiration

A.	2-3%	B.	1-3%
C.	1-4%	D.	1-2%