Free Printable Transport in Plants- Quiz 4

1.

Water potential gradient is

a)

The overall movement of solutes

b)

The evaporation of water from the leaves.

c)

The overall movement of water

d)

Pressure gradient minus water potential

2.

Now point out the incorrect statement

a)

Movement of solvent molecules will take place from chamber A to B

b)

Movement of solute will take place from chamber A to B

c)

Presence of a SPM is a prerequisite for this process to occur

d)

The direction and the rate of osmosis depend upon both the pressure gradient and conc. gradient

3.

For a solution / a cell

a)

$\psi_w\ is\ negative\ but\ \psi_s\ is\ positive$

b)

$\psi_w\ is\ postive\ but\ \psi_s\ is\ negative$

c)

$Both\ \psi_w\ and\ \psi_s\ are\ negative$

d)

$Both\ \psi_w\ and\ \psi_s\ are\ positive$

4.

If the external solution balances the osmotic pressure of cytoplasm. It is said to be –

a)

hypotonic

b)

Hypertonic

c)

Atonic

d)

Isotonic

5.

Process of Plasmolysis is –

a)

Always reversible

b)

Always irreversible

c)

rarely reversible

d)

usually reversible

6.

$What\ would\ be\ \psi_p\ of\ a\ fully\ flaccid\ cell\ ?$

a)

+3

b)

+2

c)

-3

d)

0

7.

During plasmolysis what occurs?

a)

Movement of water occurs across the membrane from an area of higher water potential to lower water potential

b)

Movement of water occurs across the membrane from an area of low water potential to high water potential

c)

Water moves inside the cell until equilibrium is reached

d)

O. P. of cell remains the same

8.

The process which brings about entry of water into seed coat when seeds are placed in water for germination is

a)

Diffusion

b)

Osmosis

c)

DPD

d)

Imbibition

9.

Water potential of imbibants is –

a)

highly positive

b)

zero

c)

highly negative

d)

always positive

10.

Imbibition causes –

a)

Increase in the volume of imbibant but no pressure development

b)

Decrease in the volume of imbibant and pressure develops

c)

No change in volume of imbibant but pressure develops

d)

Volume of imbibant increases and pressure develops

11.

Imbibition is –

a)

Faciliated diffusion

b)

An active transport

c)

Primary active transport

d)

Diffusion

Transport in Plants- Quiz 4

Total questions: 11

Worksheet time: 4mins

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