Transport in Plants Test

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Transport in Plants Test - 43

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Weekly Quiz Competition

Question 1
1 / -0

Phloem is responsible for transporting .......... in plants.

A
Sugars

B
Proteins

C
Both A and B

D
None of the above

Solution

Xylem transports and stores water and water-soluble nutrients in vascular plants.
Phloem is responsible for transporting sugars, proteins and other organic molecules in plants.
So, the correct answer is option C.
Question 2
1 / -0

1 atm pressure can raise water to a height of more than _____

A
$$10$$ feet

B
$$20$$ feet

C
$$100$$ feet

D
$$32$$ feet

Solution

One atmospheric pressure can raise water to a height of more than $$32$$ feet. so a pressure of about $$13$$ atmospheres would be required to raise water at the top of a $$416$$ feet high tree. The tension developed in the xylem sap of trees that are actively transpiring can be measured only indirectly and has been found to be high as $$-77$$ bars.
Question 3
1 / -0

Phloem is a type of

A
Connective tissue

B
Vascular tissue

C
Epidermal tissue

D
All of the above

Solution

Phloem is a vascular tissue in land plants primarily responsible for the distribution of sugars and nutrients manufactured in the leaves of the plants by the process of photosynthesis.
So, the correct answer is option B.
Question 4
1 / -0

The diagram shows four different cells. Which cells provide a large surface area for absorption?

A
1 and 2

B
1 and 3

C
2 and 4

D
3 and 4

Solution

Red blood cell absorbs oxygen and root hair cell absorbs nutrients from soil thus, both the cells have a large surface area for maximum absorption. RBC shed off its nucleus to increase the surface area for absorption.
So, the correct answer is option B.
Question 5
1 / -0

How much pressure would be required to raise water to the top of a $$416$$ ft. high tree ?

A
$$1$$ atm

B
$$13$$ atm

C
$$-77$$ bars

D
All of the above

Solution

One atmospheric pressure can raise water to a height of more than $$32$$ feet. So a pressure of about $$13$$ atmospheres would be required to raise water at the top of a $$416$$ feet high tree. The tension developed in the xylem sap of trees that are actively transpiring can be measured only indirectly and has been found to be high as $$-77$$ bars.
Question 6
1 / -0

A plant cell becomes turgid due to

A
Plasmolysis.

B
Exosmosis.

C
Endosmosis.

D
Electrolysis.

Solution

If the medium surrounding the cell has a higher water concentration than the cell, i.e., if solution is a very dilute solution, the cell will gain water by osmosis called endosmosis and cell becomes turgid.
Question 7
1 / -0

Which of the following would exert maximum osmotic pressure ?

A
Decinormal aluminium sulphate

B
Decinormal barium chloride

C
Decinormal sodium chloride

D
A solution obtained by mixing equal volumes of (b) and (c) and filtering

Solution

Osmotic pressure is a colligative property which depends upon the number of particles of solute. Thus, the solution in which solute gives the maximum number of ions exerts maximum osmotic pressure.
The number of particles in Decinormal aluminum sulphate is 5.
The number of particles in Decinormal barium chloride is 3.
The number of particles in Decinormal sodium chloride is 2.
When the equal volume of (b) and (c) are mixed, the concentration becomes half of the present concentration. Therefore decinormal aluminum suphate exerts maximum osmotic pressure. Hence option A is the correct answer.
Question 8
1 / -0

Who defined the term root pressure?

A
Stephan Hales

B
Mendel

C
Griffith

D
Godiewski

Solution

Root pressure is defined as the osmotic pressure in the root cell through which the water is translocated into leaves from the stem. The term root pressure was given by Stephan Hales. Thus the correct answer is option A.
Question 9
1 / -0

Phloem tissue is responsible for __________

A
Translocation

B
Transportation

C
Evaporation

D
None of these

Solution

Phloem tissue is responsible for translocation, which is the transport of soluble organic substances, for example, sugar. The substances travel along sieve elements, but other types of cells are also present: the companion cells, parenchyma cells, and fibers.
Question 10
1 / -0

Osmotic pressure of a solution is

A
Greater than pure solvent

B
Less than pure solvent

C
Equal to pure solvent

D
Less than or greater than pure solvent

Solution

As more and more solute is dissolved in the solvent, the concentration of the solution goes on increasing. With the increase in concentration of the solution, the osmotic pressure of the solution increases. Thus, the osmotic pressure of solution is greater than the pure solvent.

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Re-Attempt Weekly Quiz Competition

Transport in Plants Test - 43

Result

Transport in Plants Test - 43

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SHARING IS CARING

Question 1

Sugars

Proteins

Both A and B

None of the above

Solution

Question 2

$$10$$ feet

$$20$$ feet

$$100$$ feet

$$32$$ feet

Solution

Question 3

Connective tissue

Vascular tissue

Epidermal tissue

All of the above

Solution

Question 4

1 and 2

1 and 3

2 and 4

3 and 4

Solution

Question 5

$$1$$ atm

$$13$$ atm

$$-77$$ bars

All of the above

Solution

Question 6

Plasmolysis.

Exosmosis.

Endosmosis.

Electrolysis.

Solution

Question 7

Decinormal aluminium sulphate

Decinormal barium chloride

Decinormal sodium chloride

A solution obtained by mixing equal volumes of (b) and (c) and filtering

Solution

Question 8

Stephan Hales

Mendel

Griffith

Godiewski

Solution

Question 9

Translocation

Transportation

Evaporation

None of these

Solution

Question 10

Greater than pure solvent

Less than pure solvent

Equal to pure solvent

Less than or greater than pure solvent

Solution

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