Transport in Plants: MCQs Test – 4 11


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Test Type: MCQs (Multiple Choice Questions), Total Questions 15, Test Name: Transport in Plants – Test 04

Transport in Plants: MCQs Test - 4

Congratulations - you have completed Transport in Plants: MCQs Test - 4. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
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Question 1
Due to low atmospheric pressure, the rate of transpiration will
A
increase
B
decrease rapidly
C
decrease slowly
D
remain unaffected
Question 2
Guard cells help in
A
Transpiration
B
Protection against grazing
C
Fighting against infection
D
Guttation
Question 3
The transpiration is regulated by the movements of
A
Subsidiary cells of the leaves
B
Guard cells of the stomata
C
Mesophyll tissue cells
D
Epidermal cells of the leaves
Question 4
Steroid hormones easily pass through the plasma membrane by simple diffusion because they
A
Enter through pores
B
Contain carbon and hydrogen
C
Are water soluble
D
Are lipid soluble
Question 5
Living cells placed in isotonic solution (0.9% saline) retain their size and shape. This is based on the concept of
A
Facilitated diffusion
B
Diffusion
C
Osmosis
D
Transpiration
Question 6
When a plant is girdled (ringed)
A
the root and shoot die at the same time
B
the shoot dies first
C
the root dies first
D
neither root nor shoot will die
Question 7
Transport of food material in higher plants takes place through
A
Tracheids
B
Transfusion tissue
C
Companion cells
D
Sieve elements
Question 8
The rupture and fractionation do not usually occur in the water column in vessel/ tracheids during the ascent of sap because of:
A
Cohesion and adhesion
B
Lignified thick walls
C
Transpiration pull
D
Weak gravitational pull
Question 9
Passage cells are thin-walled cells found in:
A
Phloem elements that serve as entry points for substances for transport to other plant parts
B
Endodermis of roots facilitating rapid transport of water from cortex to pericycle
C
Central region of style through which the pollen tube grows towards the ovary
D
Testa of seeds to enable emergence of growing embryonic axis during seed germination
Question 10
The relationship among different types of soil water can be summed up by the following equation:
A
Echard = Hollard + Chresard
B
Chresard = Hollard – Echard
C
Chresard = Echard + Hollard
D
Hollard = Chresard – Echard
Question 11

Select the correct events leading to the opening of the stomata

a. Decline in guard cell solutes

b. Lowering of osmotic potential of guard cells

c. Rise in potassium levels in guard cells

d. Movement of water from neighbouring cells into guard cells

e. Guard cells becoming flaccid

A
a, c and d only
B
b, c and d only
C
a and e only
D
b, d and e only
Question 12
Water is lost in a liquid state in some plants through hydathodes. These hydathodes
A
do not show any specificity in opening and closing
B
remain closed during day
C
remain closed at night
D
remain always open
Question 13
Passive absorption of water by the root system is the result of
A
Tension on the cell sap due to transpiration
B
Increased respiratory activity in root cells
C
Forces created in the cells of the root
D
Osmotic force in the shoot system
Question 14
In which of the following plants, there will be no transpiration?
A
Plants growing in hilly regions
B
Aquatic, submerged plants
C
Plants living in deserts
D
Aquatic plants with floating leaves
Question 15

Assertion (A): K+ ion accumulation found in Nitella depends on its respiratory activity.

Reason (R): Absorption of all ions in plants completely depends on the usage of metabolic energy.

The correct answer is

A
A and R are true and R is the correct explanation of A
B
A and R are true but R is not the correct explanation of A
C
A is true but R is false
D
A is false but R is true
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11 thoughts on “Transport in Plants: MCQs Test – 4

  • harshita

    i like these questions!they are a little tricky

    • harshita

      the stomatal pores open during night in desert plants like cactus and bryophyllum..and these stomata are called scotoactive stomata

  • manu

    as due tto the water all aroud the water density is greater outside as compared to sub stomatal cavity so stomatal pores remain closed and no transpiration occurs .these mcqs are very helpful for entrance

  • Anonymous

    How is it that aquatic plants do not undergo transpiration? Shouldn’t desert plants not undergo transpiration?

    • jashan

      DESERT PLANTS POSSESS STOMATA BUT IT IS NOT SO IN SUBMERGED PLANTS

  • PRIYANKA KALANI

    in question 12 ,(B) should be correct,thus guttation is not occurring in day.

    • sanyam

      even i think so….bt there is a possibility for them to remian open!!!

    • mrnituk

      no….. hydathodes are always open …. they are open pores…. independent of guttation activities and rate of guttation.

    • jashan

      THEY REMAIN OPENED BUT GUTTATION DOESN’T OCCUR DURING DAY TIME

  • Monika chahar

    ..thanx GELI 4 providing me such a good questions..