Transport in Plants Test

Result

Transport in Plants Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Select the correct equation from the following

A
DPD = OP + WP

B
DPD = OP – WP

C
DPD = WP + OP

D
DPD = WP – OP

Solution

Diffusion pressure deficit is equal to osmotic pressure minus water potential. Higher the DPD more faster osmosis will occur.(DPD = OP – WP).
Question 2
1 / -0

Oozing of water drops from injured leaf edges is

A
Transpiration

B
Oozation

C
Guttation

D
Bleeding

Solution

Water drops comes out from theinjured leaf edges of leaves. This oozing of water drop from injured leaf edges is called leaf bleeding.
Question 3
1 / -0

The path of water from soil up to secondary xylem is

A
soil → root hair → cell wall → cortex → endodermis → pericycle → protoxylem → metaxylem

B
cortex → root hair → endodermis → pericycle → protoxylem → metaxylem

C
pericycle → soil → root hair → cortex → endodermis → protoxylem → metaxylem

D
soil → root hair → cell wall → cortex → pericycle → endodermis → protoxylem → metaxylem
Question 4
1 / -0

Which one will reduce the rate of transpiration?

A
Increase in water uptake

B
Decrease in light intensity

C
Rise in temperature

D
Increase in wind velocity

Solution

Transpiration takes place through stomata. Decrease in light intensity closes the stomata that ultimately results into reduction in rate of transpiration.
Question 5
1 / -0

The movement of water molecules across a selectively-permeable membrane from an area of high concentration to an area of low concentration is known as

A
osmosis

B
active transport

C
diffusion

D
facilitated diffusion
Question 6
1 / -0

Gradient of turgor pressure as the possible mechanism of nutrient translocation was given by

A
Curtis

B
Dixon and Joly

C
Munch

D
Mason and Maskell
Question 7
1 / -0

The net direction and rate of osmosis depends on

A
Only pressure gradient

B
Pressure gradient and Concentration gradient

C
Only concentration gradient

D
None of the above

Solution

The diffusion of water across a semi-permeable membrane from high concentration of water (or low solute concentration) to low concentration of water (or high solute concentration) is called osmosis.

The net direction and rate of osmosis depends on two factors: concentration gradient and pressure gradient.
Question 8
1 / -0

Inside the xylem, water molecules form a long chain extending from the roots to the leaves by the property/properties of

A
transpiration

B
diffusion

C
cohesion and adhesion

D
osmosis
Question 9
1 / -0

Some carrier proteins allow diffusion by both molecules cross the membrane in the same direction is

A
Aquaporins

B
Antiport

C
Symport

D
Uniport

Solution

Some carrier or transport proteins allow diffusion only if two types of molecules move together. In a symport, both molecules cross the membrane in the same direction.
Question 10
1 / -0

Difference between osmotic pressure is

A
DPD

B
Solute potential

C
Transpirational pull

D
Osmotic potential

Solution

Difference between osmotic pressure is called diffusion pressure deficit (DPD). It is the reduction of diffusion pressure of water in solution or cell over its pure state due to presenceof solute.

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Re-Attempt Weekly Quiz Competition

Transport in Plants Test - 3

Result

Transport in Plants Test - 3

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SHARING IS CARING

Question 1

DPD = OP + WP

DPD = OP – WP

DPD = WP + OP

DPD = WP – OP

Solution

Question 2

Transpiration

Oozation

Guttation

Bleeding

Solution

Question 3

soil → root hair → cell wall → cortex → endodermis → pericycle → protoxylem → metaxylem

cortex → root hair → endodermis → pericycle → protoxylem → metaxylem

pericycle → soil → root hair → cortex → endodermis → protoxylem → metaxylem

soil → root hair → cell wall → cortex → pericycle → endodermis → protoxylem → metaxylem

Question 4

Increase in water uptake

Decrease in light intensity

Rise in temperature

Increase in wind velocity

Solution

Question 5

osmosis

active transport

diffusion

facilitated diffusion

Question 6

Curtis

Dixon and Joly

Munch

Mason and Maskell

Question 7

Only pressure gradient

Pressure gradient and Concentration gradient

Only concentration gradient

None of the above

Solution

Question 8

transpiration

diffusion

cohesion and adhesion

osmosis

Question 9

Aquaporins

Antiport

Symport

Uniport

Solution

Question 10

DPD

Solute potential

Transpirational pull

Osmotic potential

Solution

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