PPSC Lecturer Biology Test 81 Online Preparation MCQs

Leave a Comment / By Hassan / August 6, 2021 August 6, 2021

Given below on this Website Online Free Taleem is free online MCQ’s test related to PPSC of Lecturer Biology. All the individuals who are going to appear in PPSC Lecturer of Biology written test can attempt these tests in order to prepare for it in best possible way. Our tests include all the important questions MCQs of Lecturer of PPSC Biology, all Past Papers of Lecturer of Biology PPSC that have extremely high amount of chances for been included in the actual exam which make our test undoubtedly the best source of preparation.

Note:-

There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
Practice this test at least 5 times if you want to secure High Marks.
At the End of the Test you can see your Test score and Rating.
If you found any incorrect answer in Quiz. Simply click on the quiz title and comment below on that MCQ. So that I can update the incorrect answer on time.

Please Click Below START Button to Take this Lecturer Biology Test Online.

Test Instructions:-
Test Name	Lecturer Biology
Subject	Biology Test 81
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

PPPSC LECTURER BIOLOGY ONLINE PRACTICE TEST NO. 81

1 / 25

What is the unit for measuring water potential ?

Density

Pascal

Hydrostatic pressure

Meter

2 / 25

In the chemical context, water potential means:

Biological potential

Physical potential

Concentration potential

Chemical potential

3 / 25

At which hydrostatic pressure does the water potential decreases ?

When the value of ys is positive

When the value of yp is positive

When the value of yp is negative

When the value of yp is constant

4 / 25

What is the system for long distance transport in plant ?

Ionic channels

Transport paths

Transport units

Transport system

5 / 25

If freshly cut potato chips are kept in salt water:

It bends

It becomes turgid

It imbibe more sucrose

It imbibes more starch

6 / 25

Turgor pressure means:

Negative value of ys

Negative value of yp

Positive value of ys

Positive value of yp

7 / 25

If the y_s of solution, in a cell decreases:

Water enters cell

Water remains stable

Water goes out of the cell

No inward or outward movement of water

8 / 25

If a square piece of beetroot is cut and put in cold water, the anthocynin pigment does not come out. This indicates the fact that the plasma membrane

It is pervious to anthocyanin

It is dead structure

The membrane is selectively previous to anthocyanin

It is impervious to anthocyanin

9 / 25

In the presence of which factors there is a considerable increase in cell size, due to absorption ?

Gaseous form

All of the above

Liquid form

Colloidal form

10 / 25

With respect to water potential, the component dependent on the bulk of water is:

11 / 25

The force due to imbibition is called...

Root pressure

Osmotic pressure

Transpiration pull

Imbibition pressure

12 / 25

Which factor does not affect the water potential?

Gravitational pull

Concentration

Transpiration

Pressure

13 / 25

Which compounds act like a colloidal system ?

Protein

All of the above

Starch

Cellulose

14 / 25

What will happen if salt is sprinkled on onion which is cut ?

Vacuolar fluid comes out from the onion cells

Water comes out of the onion cells.

The cell wall of the onion cells shrinks

Salt enters the onion cells

15 / 25

Water potential of pure water is:

100

16 / 25

Under what circumstances does osmosis stop ?

When concentration of both the solvents becomes equal.

None of the above

When the concentration of both the solutes becomes equal

When concentration of both the solutions becomes equal.

17 / 25

The pressure at which the entry of water molecules is prevented across a semi-permeable membrane, is

Root pressure

Turgor pressure

Osmotic pressure

Diffusion pressure

18 / 25

Positive and negative hydrostatic pressure gradients can be obtained by

Active transport

Bulf flow

Long distance transport

Osmosis

19 / 25

No movement of water is seen when a cell is placed in this solution. The solution is:

Pure water

Hypertonic

Hypotonic

Isotonic

20 / 25

In all living organisms the following acts as a barrier:

Plasma membrane

All the above

Cell wall

Nuclear membrane

21 / 25

By which process the root hair of plants absorb water from soil ?

Osmosis

Imbibition

Diffusion

Adsorption

22 / 25

If the concentration of solutes increases in a cell, then the value of ............. decreases:

23 / 25

Which type of solution makes the cell deplasmolysed ?

Hypertonic

Isotonic

Pure water

Hypotonic

24 / 25

The turgor pressure of a cell kept in hypotonic solution:

It increases

Does not undergo a change

Changes a little bit

It decreases

25 / 25

Which phenomenon becomes zero when a cell is fully turgid ?

Pressure exerted by cell wall

Osmotic pressure

Turgor pressure

Suction pressure

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