Transport in Plants Test

Result

Transport in Plants Test - 47

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

In hypertonic solution, water potential of cell

A
Increases

B
Decreases

C
First increases and then decreases

D
Remains unchanged

Solution

Answer is option B i.e. "Decreases"
A hypertonic solution is the type of solution in which concentration of solute is more than the solvent. When the cell placed in such solution the water potential of the cell decreases due high concentration of solute. Water potential of a cell protoplasm is equal but opposite in sign to DPD.
Question 2
1 / -0

Excess salt inhibits growth in pickles by

A
Endosmosis

B
Exomosis

C
Oxidation

D
Denaturation

Solution

The excessive salt is used for the preservation of the pickles for long period of time. The high concentration of salt in the pickles causes the removal of the water from the bacterial cells resulting in plasmolysis. The bacterial cells die due to the loss of water by the process of exosmosis.
Thus, the correct answer is option B.
Question 3
1 / -0

Which of the following plant material is an efficient water imbibant?

A
Agar

B
Cellulose

C
Lignin

D
Pectin

Solution

Agar is an efficient water imbibant as it is a component made up of subunits of sugar galactose. When it is dissolved in boiling water and cooled, it looks like a gel and is often used to solidify the culture medium as it cannot be degraded by bacteria.
Thus, the correct answer is option A.
Question 4
1 / -0

In plants, photosynthetic products are transported through

A
Sieve cells

B
Sieve cells and companion cell

C
Sieve tubes and parenchyma

D
Sieve tubes and sieve cells

Solution

Transportation of food material in plants is accomplished by phloem tissue. The process of transportation of food by phloem is called translocation. Translocation requires energy in the form of ATP, and food materials are transported by sieve tubes and sieve cells from the region of high concentration to lower concentration.
Thus, the correct answer is option D.
Question 5
1 / -0

Gum swells up in the water due to

A
Imbibition

B
Diffusion

C
Endosmosis

D
Turgidity

Solution

Imbibition is the uptake or absorption of water by the solid substance without forming a solution. During the process of imbibition, imbibants increase in volume. When a dry piece of wood or gum or pieces of agar-agar are placed in water, they swell and increase in volume.
Thus, the correct answer is option (A).
Question 6
1 / -0

Imbibition occurs when

A
Grapes are dipped in saturated solution.

B
Wood is placed in ether.

C
Rubber is dipped in ether.

D
Rubber is dipped in water.

Solution

Imbibition is a special type of diffusion when water is absorbed by solids-colloids causing an enormous increase in volume.
Rubber is a colloidal substance but elastic. So it can easily absorb ether and absorption takes place and imbibition occurs.
So the correct answer is 'Rubber is dipped in ether'.
Question 7
1 / -0

1 gm molar solution is :

A
1 gm mole of solute dissolved in 1000 ml of solvent.

B
1 gm mole of solute dissolved in 1000 ml of solution.

C
1 gm of solute dissolved in 1000 ml of solvent.

D
1 gm of solute dissolved in 1000 ml of solution.

Solution

A molar solution is a solution in which 1 mole of a compound/solute is dissolved in a total volume of 1 litre. So, 1 gm molar solution is 1 gm mole of solute dissolved in 1l or 1000ml of solution.
Thus, the correct answer is option (B).
Question 8
1 / -0

Seeds placed in water imbibe the same because of

A
Exomosis

B
Higher $$ \Psi \omega $$

C
Lower $$ \Psi \omega $$

D
Pressure of vacuoles

Solution

The rate at which the seeds imbibe water depends on the gradient of water potential between water and the seed. Imbibition will be fastest when dry seeds with low water potential are placed in pure water. As the seeds take up water, and its water potential rises gradually towards zero, the gradient will decline and imbibition will slow down in consequence.
Thus, the correct answer is option (C).
Question 9
1 / -0

Day time loss of water in the vapour form from stomata is a trade off for intake of

A
Minerals

B
Oxygen

C
Carbon dioxide

D
Energy

Solution

In the day-time, when photosynthesis occurs, the guard cells are turgid while in the evening, regardless of the availability of water, these guard cells lose turgidity. When they are turgid, stomata open, and carbon dioxide enters freely. When they are flaccid, carbon dioxide is largely excluded, but water loss is also retarded. hence, the daytime loss of water in the vapor form from stomata is a trade-off for intake of carbon dioxide.
Thus, the correct answer is option (C).
Question 10
1 / -0

Transpiration is unavoidable evil because of

A
Structure of leaf and harmful effect

B
Beneficial and harmful effect

C
Maintenance of turgidity for growth

D
Gaseous exchange for photosynthesis and respiration

Solution

Stomata are the aperture which is mainly present at the dorsal surface of the leaf. It is meant for gaseous exchange but it also allows the loss of water through transpiration. Loss of water can lead to wilting, serious dessication and often the death of a plant if there is a shortage of water.
Thus, the correct answer is an option D.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Transport in Plants Test - 47

Result

Transport in Plants Test - 47

Score

-

Rank

-

SHARING IS CARING

Question 1

Increases

Decreases

First increases and then decreases

Remains unchanged

Solution

Question 2

Endosmosis

Exomosis

Oxidation

Denaturation

Solution

Question 3

Agar

Cellulose

Lignin

Pectin

Solution

Question 4

Sieve cells

Sieve cells and companion cell

Sieve tubes and parenchyma

Sieve tubes and sieve cells

Solution

Question 5

Imbibition

Diffusion

Endosmosis

Turgidity

Solution

Question 6

Grapes are dipped in saturated solution.

Wood is placed in ether.

Rubber is dipped in ether.

Rubber is dipped in water.

Solution

Question 7

1 gm mole of solute dissolved in 1000 ml of solvent.

1 gm mole of solute dissolved in 1000 ml of solution.

1 gm of solute dissolved in 1000 ml of solvent.

1 gm of solute dissolved in 1000 ml of solution.

Solution

Question 8

Exomosis

Higher $$ \Psi \omega $$

Lower $$ \Psi \omega $$

Pressure of vacuoles

Solution

Question 9

Minerals

Oxygen

Carbon dioxide

Energy

Solution

Question 10

Structure of leaf and harmful effect

Beneficial and harmful effect

Maintenance of turgidity for growth

Gaseous exchange for photosynthesis and respiration

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.