Absorption by Roots Test

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Absorption by Roots Test - 7

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Weekly Quiz Competition

Question 1
1 / -0

In which of the following cases is plasmolysis not involved?

A
Addition of salt in pickle to kill bacteria

B
Salting of meat to kill germs

C
Killing of weeds by sprinkling salts around their base

D
Killing of insects in a field using insecticides
Question 2
1 / -0

The pressure exerted by the cell contents on the cell wall is called__________.

A
turgor pressure

B
wall pressure

C
osmotic pressure

D
diffusion pressure
Question 3
1 / -0

Which of the following is not caused by turgidity or turgor pressure?

A
Cracking of concrete floor by roots of the adjoining trees

B
Development of root pressure

C
Rigidity of leaves

D
Closure of stomata
Question 4
1 / -0

Which of the following provides rigidity to the soft tissues such as leaves?

A
Flaccidity of cells

B
Turgidity of cells

C
Flocudity of cells

D
Cell membrane of cells
Question 5
1 / -0

Name the plant hormone responsible for the elongation of cells.

A
Auxin

B
Gibberellin

C
Abscisic acid

D
Cytokinins

Solution

The plant hormone responsible for the elongation of cells is Auxin.
Auxins are generally produced by the growing apices of the stem and roots, from where they migrate to the regions of their action. For example, IAA and indole butyric acid(IBA).
The primary function of the auxin hormones is to elongate plant cells in the stem. For Example, auxins are the hormones responsible for phototropism, the growth of a plant toward the light.
Hence, the correct option is (A).
Question 6
1 / -0

Which of the following statements is NOT true?

A
Deplasmolysis occurs due to loss of water content of a cell.

B
Food material is transported through phloem.

C
Root pressure forces water up through the stem to leaves.

D
Upward flow of minerals occurs through xylem.
Question 7
1 / -0

Which of the following processes is responsible for opening of stomata?

A
Movement of solutes into the guard cells

B
Movement of solutes outside the guard cells

C
Movement of water into the guard cells

D
Movement of water outside the guard cells
Question 8
1 / -0

Which of the following statements is NOT true?

A
A living selective membrane is essential for active transport.

B
Diffusion of solutions is a rapid process.

C
No energy is required for osmosis.

D
Imbibition is an important force in ascent of sap.
Question 9
1 / -0

On uprooting a plant, which of the following is responsible for wilting of leaves?

A
Cessation of photosynthesis

B
Destruction of cell wall

C
Lysis of cell membrane

D
Loss of turgidity
Question 10
1 / -0

Which of the following statements is NOT true?

A
Osmosis is a type of diffusion.

B
Energy is not required for imbibition.

C
Exosmosis may cause bursting of a cell.

D
Active transport involves movement of ions or salts.
Question 11
1 / -0

Which of the following occurs as a result of endosmosis?

A
Flaccidity

B
Shrinkage

C
Turgidity

D
Plasmolysis
Question 12
1 / -0

Which of the following is responsible for guttation in banana leaves?

A
Root pressure

B
Osmotic pressure

C
Wall pressure

D
Turgor pressure
Question 13
1 / -0

Which of the following processes occurs in opposite direction to diffusion?

A
Endosmosis

B
Exosmosis

C
Active transport

D
Effusion

Question 14

1 / -0

Match the following:

(i) Osmosis	(A) Hydrophilic compounds
(ii) Diffusion	(B) Water only
(iii) Active transport	(C) Rapid in gases
(iv) Imbibition	(D) ATP

(i) – (D), (ii) – (A), (iii) – (B), (iv) – (C)

(i) – (B), (ii) – (C), (iii) – (D), (iv) – (A)

(i) – (B), (ii) – (A), (iii) – (D), (iv) – (C)

(i) – (B), (ii) – (C), (iii) – (B), (iv) – (A)

Question 15
1 / -0

Which of the following events takes place when water enters a plasmolysed cell before its death?

A
Flaccidity

B
Deplasmolysis

C
Imbibition

D
Turgidity

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Absorption by Roots Test - 7

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Question 1

Addition of salt in pickle to kill bacteria

Salting of meat to kill germs

Killing of weeds by sprinkling salts around their base

Killing of insects in a field using insecticides

Question 2

turgor pressure

wall pressure

osmotic pressure

diffusion pressure

Question 3

Cracking of concrete floor by roots of the adjoining trees

Development of root pressure

Rigidity of leaves

Closure of stomata

Question 4

Flaccidity of cells

Turgidity of cells

Flocudity of cells

Cell membrane of cells

Question 5

Auxin

Gibberellin

Abscisic acid

Cytokinins

Solution

Question 6

Deplasmolysis occurs due to loss of water content of a cell.

Food material is transported through phloem.

Root pressure forces water up through the stem to leaves.

Upward flow of minerals occurs through xylem.

Question 7

Movement of solutes into the guard cells

Movement of solutes outside the guard cells

Movement of water into the guard cells

Movement of water outside the guard cells

Question 8

A living selective membrane is essential for active transport.

Diffusion of solutions is a rapid process.

No energy is required for osmosis.

Imbibition is an important force in ascent of sap.

Question 9

Cessation of photosynthesis

Destruction of cell wall

Lysis of cell membrane

Loss of turgidity

Question 10

Osmosis is a type of diffusion.

Energy is not required for imbibition.

Exosmosis may cause bursting of a cell.

Active transport involves movement of ions or salts.

Question 11

Flaccidity

Shrinkage

Turgidity

Plasmolysis

Question 12

Root pressure

Osmotic pressure

Wall pressure

Turgor pressure

Question 13

Endosmosis

Exosmosis

Active transport

Effusion

Question 14

(i) – (D), (ii) – (A), (iii) – (B), (iv) – (C)

(i) – (B), (ii) – (C), (iii) – (D), (iv) – (A)

(i) – (B), (ii) – (A), (iii) – (D), (iv) – (C)

(i) – (B), (ii) – (C), (iii) – (B), (iv) – (A)

Question 15