Absorption by Roots Test

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Absorption by Roots Test - 8

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Weekly Quiz Competition

Question 1
1 / -0

Identify the parts A, B, C and D of a root hair.

A
A - Cell wall, B - Vacoule, C - Cytoplasm, D - Nucleus

B
A - Cell wall, B - Nucleus, C - Vacoule, D - Cytoplasm

C
A - Nucleus, B - Vacoule, C - Cytoplasm, D - Nucleus

D
A - Cell wall, B - Cytoplasm, C - Vacoule, D - Nucleus

Question 2

1 / -0

Match the following:

(a) Ascent of sap	(i) Water sticks to the surface of the cells
(b) Guttation	(ii) Loss of water from the surface of the leaf
(c) Transpiration pull	(iii) Movement of water from roots to leaves
(d) Adhesion	(iv) Loss of water in the form of water droplets

(a) – (iii), (b) – (iv), (c) – (ii) and (d) – (i)

(a) – (iii), (b) – (i), (c) – (ii) and (d) – (ii)

(a) – (ii), (b) – (i), (c) – (iv) and (d) – (iii)

(a) – (iv), (b) – (iii), (c) – (i) and (d) – (ii)

Question 3
1 / -0

Which of the following phenomena is not involved in the absorption and conduction of water and minerals?

A
Imbibition

B
Diffusion

C
Surface tension

D
Plasmolysis
Question 4
1 / -0

The ability of roots to draw water from the soil is dependent on
(i) surface area of roots
(ii) thin walls of root hair
(iii) cell sap of root hair

A
Only (i)

B
Both (i) and (iii)

C
Both (ii) and (iii)

D
All of these
Question 5
1 / -0

Which of the following processes keeps the plant cool?

A
Transpiration

B
Guttation

C
Photosynthesis

D
Translocation

Solution

Transpiration keeps the plant cool.
The leaves absorb the radiant energy. Some of the light energy is utilized in photosynthesis, rest is converted into heat energy resulting in an increase in leaf temperature. However, rapid loss of water in the form of water vapour from the aerial parts of the plant through transpiration brings down their temperature. Transpiration thus provides a significant cooling effect which keeps the plant from being overheated.
Hence, the correct option is (A).
Question 6
1 / -0

Swelling of raisins, when placed in a beaker of water, demonstrates the phenomenon of

A
exosmosis

B
endosmosis

C
diffusion

D
active transport
Question 7
1 / -0

Mineral nutrients, which are required by the plants, are absorbed by ____________.

A
only stem

B
only roots

C
both stem and roots

D
both stems and bark
Question 8
1 / -0

Which of the following is not an importance of turgidity to plants?

A
Provides strength to soft tissues

B
Provides pressure to push through hard ground

C
Regulation in opening and closing of stomata

D
Rupturing of seed coat in case of germinating seeds
Question 9
1 / -0

The pressure of the cell contents on cell wall is called ______ and the pressure exerted by the cell wall on the cell content is called _______

A
turgor pressure; wall pressure

B
wall pressure; osmotic pressure

C
osmotic pressure; turgor pressure

D
diffusion gradient; wall pressure
Question 10
1 / -0

Which of the following forces is not responsible for ascent of sap?

A
Root pressure

B
Capillarity

C
Transpiration pull

D
Active transport
Question 11
1 / -0

The upward movement of water in a plant towards the stem and leaves is called________

A
guttation

B
transpiration

C
bleeding

D
ascent of sap

Question 12

1 / -0

Match the following:

Column I	Column II
(A) Imbibition	(i) Movement of water molecules across a semipermeable membrane
(B) Active transport	(ii) Free movement of molecules from high to low concentration
(C) Diffusion	(iii) Absorption of water by dead plants or cell by surface attraction
(D) Osmosis	(iv) Passage of a substance from lower to high concentration using energy

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

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

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

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

Question 13
1 / -0

Consider the following diagrams:

Which of the following is correct for solutions present in beakers A, B and C?

A
A - Hypotonic, B - Isotonic and C - Hypertonic

B
A - Hypertonic, B - Hypotonic and C - Isotonic

C
A - Isotonic, B - Hypertonic and C - Hypotonic

D
A - Hypotonic, C - Hypertonic and C - Isotonic
Question 14
1 / -0

Which of the following is the reverse of turgidity?

A
Plasmolysis

B
Flaccidity

C
Deplasmolysis

D
Bleeding
Question 15
1 / -0

In a beaker, potassium permanganate dissolves in the water due to

A
diffusion

B
osmosis

C
active transport

D
imbibition

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Absorption by Roots Test - 8

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Question 1

A - Cell wall, B - Vacoule, C - Cytoplasm, D - Nucleus

A - Cell wall, B - Nucleus, C - Vacoule, D - Cytoplasm

A - Nucleus, B - Vacoule, C - Cytoplasm, D - Nucleus

A - Cell wall, B - Cytoplasm, C - Vacoule, D - Nucleus

Question 2

(a) – (iii), (b) – (iv), (c) – (ii) and (d) – (i)

(a) – (iii), (b) – (i), (c) – (ii) and (d) – (ii)

(a) – (ii), (b) – (i), (c) – (iv) and (d) – (iii)

(a) – (iv), (b) – (iii), (c) – (i) and (d) – (ii)

Question 3

Imbibition

Diffusion

Surface tension

Plasmolysis

Question 4

Only (i)

Both (i) and (iii)

Both (ii) and (iii)

All of these

Question 5

Transpiration

Guttation

Photosynthesis

Translocation

Solution

Question 6

exosmosis

endosmosis

diffusion

active transport

Question 7

only stem

only roots

both stem and roots

both stems and bark

Question 8

Provides strength to soft tissues

Provides pressure to push through hard ground

Regulation in opening and closing of stomata

Rupturing of seed coat in case of germinating seeds

Question 9

turgor pressure; wall pressure

wall pressure; osmotic pressure

osmotic pressure; turgor pressure

diffusion gradient; wall pressure

Question 10

Root pressure

Capillarity

Transpiration pull

Active transport

Question 11

guttation

transpiration

bleeding

ascent of sap

Question 12

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

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

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

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

Question 13

A - Hypotonic, B - Isotonic and C - Hypertonic

A - Hypertonic, B - Hypotonic and C - Isotonic

A - Isotonic, B - Hypertonic and C - Hypotonic

A - Hypotonic, C - Hypertonic and C - Isotonic

Question 14

Plasmolysis

Flaccidity

Deplasmolysis

Bleeding

Question 15