Biology Practice Test 2




Biology Practice Test 2

Biology Practice Test 2 is designed to help students strengthen their understanding of key biological concepts, theories, and processes for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from molecular biology, cell division, human physiology, plant physiology, and more, helping students improve accuracy and retention.

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Biology Practice Test 2

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1 / 100

Category: Biology Ch 11 Class 12

Lichen and algae form

2 / 100

Category: Biology Ch 10 Class 12

Which one is NOT a continuous trait?

NUMS 2019 Reconduct
Biology
Evolution
Elimination Tool:

3 / 100

Category: Biology Ch 14 Class 11

The chemical nature of an antibody is:

NUMS 2016
Biology
Transport
Elimination Tool:

4 / 100

Category: Biology

According to the theory of natural selection, organisms produce:

NUMS Mock 2
Biology
Evolution

5 / 100

Category: Biology Ch 10 Class 12

Archaebacteria can survive at

6 / 100

Category: Biology Ch 8 Class 11

Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called?

PMC Sample 2
Biology
Kingdom Fungi
Elimination Tool:

7 / 100

Category: Biology Ch 14 Class 11

Which of the following is NOT a part of the immune system?

NTS 2018
Biology
Transport
Elimination Tool:

8 / 100

Category: Biology Ch 4 Class 11

Which among the following sentence is not correct about the organelles?

NUMS 2019 Reconduct
Biology
Cell Structure and Function
Elimination Tool:

9 / 100

Category: Biology Ch 1 Class 11

The study of fossils is called:

10 / 100

Category: Biology Ch 3 Class 11

The enzyme found in saliva responsible for the digestion of carbohydrates is:

NTS 2018
Biology
Enzymes
Elimination Tool:

11 / 100

Category: Biology Ch 5 Class 12

Determinate growth is

12 / 100

Category: Biology Ch 7 Class 11

Cyanobacteria resemble photosynthetic eukaryotes because they have:

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

13 / 100

Category: Biology Ch 10 Class 11

Of the following which one is not found in series proterostomia.

14 / 100

Category: Biology Ch 7 Class 12

Which of the following cells does not enter G0 phase?

NUMS 2020
Biology
Cell Cycle
Elimination Tool:

15 / 100

Category: Biology

Q.36 The retinal is important for___________ of human

16 / 100

Category: Biology Ch 8 Class 12

A pure breeding plant with the dominant phenotype of character P and the recessive phenotype of character Q was crossed with another pure breeding plant with the recessive phenotype of chracter P and the dominant phenotype of Q. The offspring of this cross were crossed with a double homozygous recessive for P and Q and the following results were obtained:

22 were phenotypically dominant for P and recessive for Q
5 were phenotypically dominant for both P and Q
4 were phenotypically recessive for both P and Q
24 were phenotypically recessive for P and dominant for Q
Which one of the following types of Inheritance is illustrated by these results?

Biology
Variation and Genetics
NTS 2013
Elimination Tool:

17 / 100

Category: Biology Ch 9 Class 12

DNA polymerase enzyme for PCR is isolated from bacteria, Thermus aquaticus, because;

UHS 2019
Biology
Biotechnology
Elimination Tool:

18 / 100

Category: Biology Ch 10 Class 12

Which one of the following pairs represents an analogous feature?

NUMS 2018
Biology
Evolution
Elimination Tool:

19 / 100

Category: Biology Ch 9 Class 12

A weed engineered to produce a biodegradable plastic in cell granules is

20 / 100

Category: Biology Ch 10 Class 12

During aristotle time, it was thought that

PMC Sample 3
Biology
Evolution
Elimination Tool:

21 / 100

Category: Biology Ch 10 Class 12

Which of the following is not an evidence for evolution?

PMC Sample 3
Biology
Evolution
Elimination Tool:

22 / 100

Category: Biology Ch 3 Class 12

Na+ -K+ ATPase pump is important for:

23 / 100

Category: Biology Ch 14 Class 11

Atherosclerosis is disease of:

NTS 2016 SMBBMC
Biology
Transport
Elimination Tool:

24 / 100

Category: Biology Ch 3 Class 12

Which of the following is the function of adrenaline?

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

25 / 100

Category: Biology Ch 9 Class 11

Which of the following statement about plants is incorrect?

26 / 100

Category: Biology Ch 12 Class 12

Mountains of Koh Hindukush come under

27 / 100

Category: Biology Ch 5 Class 12

The most abundant organic molecule on the planet earth is:

NUMS 2016
Biology
Growth and Development
Elimination Tool:

28 / 100

Category: Biology

Hepatic and Pancreatic secretions are also stimulated by a hormone called:

NUMS Mock 4
Biology
Coordination and Control

29 / 100

Category: Biology Ch 3 Class 11

Some enzymes require the presence of a non protein molecule to behave catalytically. An enzyme devoid of this molecule is called a(n):

NTS 2013
Biology
Enzymes
Elimination Tool:

30 / 100

Category: Biology Ch 9 Class 12

A single stranded nucleotide sequence that will hybridize into a certain piece of DNA is

31 / 100

Category: Biology Ch 5 Class 12

Human embryo remains enclosed in:

PMC Practice 1
Biology
Growth and Development
Elimination Tool:

32 / 100

Category: Biology

Q.51 The heavy and light chains of an antibody molecule is held together by:

33 / 100

Category: Biology Ch 2 Class 11

% of water in brain cells is

34 / 100

Category: Biology Ch 8 Class 12

Which of the following characters of pea plant is dominant?

35 / 100

Category: Biology Ch 5 Class 11

Organisms of which of the following kingdom have absorptive mode of nutrition:

36 / 100

Category: Biology Ch 2 Class 11

Steroids consist of _____ 6 membered carbon rings and one 5 membered carbon ring.

NTS 2012
Biology
Biological Molecules
Elimination Tool:

37 / 100

Category: Biology Ch 5 Class 12

Germ cells give rise to:

NTS 2012
Biology
Growth and Development
Elimination Tool:

38 / 100

Category: Biology Ch 10 Class 11

Which group of organisms has the following features?

I. three pairs of jointed legs

II. three-part segmented body

III. one pair of antennae

NTS 2017
Biology
Kingdom Animalia
Elimination Tool:

39 / 100

Category: Biology

The light dependent reaction of photosynthesis occurs in:

NUMS Mock 2
Biology
Bioenergetics

40 / 100

Category: Biology Ch 11 Class 12

Hydrosere is

41 / 100

Category: Biology

Q.35 Ribose is a monosaccharide constituent of man

42 / 100

Category: Biology Ch 6 Class 12

Chromosome is made of

43 / 100

Category: Biology Ch 14 Class 11

Regarding structure of the human heart, Chordae Tendinae are present in:

PMC 2020
Biology
Transport
Elimination Tool:

44 / 100

Category: Biology Ch 8 Class 12

______ alleles both have an effect on the phenotype of a heterozygous organism:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

45 / 100

Category: Biology

Consider the following statements about biological communities.

I. Their members share a common gene pool

II. The community remains stable even though some physical aspect of the environment may undergo a change

III. It consists of all the populations living in a particular area.

IV. A community interacts with a non-living environment and both function together to form an ecosystem

Which two of the above statements are true?

NUMS Mock 4
Biology
Evolution

46 / 100

Category: Biology

Q.44  When calcium gates of the smooth endoplasmic reticulum are open, then calcium is released into:

47 / 100

Category: Biology Ch 3 Class 11

An activated enzyme made of polypeptide chain and a cofactor is?

PMC Practice 2
Biology
Enzymes
Elimination Tool:

48 / 100

Category: Biology Ch 8 Class 12

When phenotype of a heterozygote is in between the phenotypes of both the homozygous parents, it is called:

NUMS 2016
Biology
Variation and Genetics
Elimination Tool:

49 / 100

Category: Biology Ch 2 Class 12

Movement of the Hip joint is which type of synovial joints?

NUMS 2018
Biology
Support and Movement
Elimination Tool:

50 / 100

Category: Biology

Four events in the transmission of nerve impulses across synapses are:

I. depolarisation of the presynaptic membrane

II. propagation of postsynaptic action potential

III. reabsorption of the transmitter substance

IV. release of transmitter substance into the synaptic cleft

In which sequence do these events occur?

FIRST -> LAST

NUMS Mock 3
Biology
Coordination and Control

51 / 100

Category: Biology Ch 7 Class 11

Which of the following is used as a biological weapon?

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

52 / 100

Category: Biology

The finger like infoldings, which are formed by inner membrane of mitochondria, are called:

NUMS Mock 2
Biology
Cell Structure and Function

53 / 100

Category: Biology Ch 2 Class 11

NAD is an example of:

PMC 2020
Biology
Biological Molecules
Elimination Tool:

54 / 100

Category: Biology Ch 3 Class 12

In plants, ______ hormone promotes closing of stomata in drought conditions.

NUMS 2019 Reconduct
Biology
Coordination and Control
Elimination Tool:

55 / 100

Category: Biology Ch 13 Class 11

The structural and functional unit of the lungs is:

PMC Practice 2
Biology
Gaseous Exchange
Elimination Tool:

56 / 100

Category: Biology Ch 8 Class 12

Read the passage below to answer the question:

Hemophilia is a disorder in which blood fails to clot. Saad, a male hemophiliac, marries Sara, a normal woman and together they have four children, two boys (Ahmed and Ali) and two girls (Alia and Ayesha). None of the children display the symptoms of Hemophilia. Ahmed, Ali, Ayesha, and Ali all marry normal individuals and have children. None of Ahmeds or Ali’s children, male or female, display symptoms of hemophilia, but the sons of Alia and Ayesha display symptoms of hemophilia while the daughters of Alia and Ayesha do not.

Which of the following individuals are heterozygous for hemophilia:

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

57 / 100

Category: Biology Ch 7 Class 11

This protist has isomorphic alternation of generation:

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

58 / 100

Category: Biology

Q.29 Fluid secreted by Sertoli cells provides sperms with which of the following ?

59 / 100

Category: Biology

Q.52 A chromosome in which a centromere stays at one end is called?

60 / 100

Category: Biology

The only possible treatment in end stage renal failure is:

NUMS Mock 3
Biology

61 / 100

Category: Biology Ch 10 Class 12

The genetic change in a population caused by natural selection is called?

PMC Sample 1
Biology
Evolution
Elimination Tool:

62 / 100

Category: Biology Ch 10 Class 11

All the animals of the grade radiata are

63 / 100

Category: Biology Ch 12 Class 11

Food is assimilated into the body from digestive tract in:

NUMS 2014
Biology
Nutrition
Elimination Tool:

64 / 100

Category: Biology Ch 1 Class 11

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by :

65 / 100

Category: Biology Ch 8 Class 12

To check the homozygosity or heterozygosity of apparently dominant trait, we do the test cross by crossing it with:

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

66 / 100

Category: Biology Ch 12 Class 11

Living things that would be the first to experience adverse effects if large amounts of carbon dioxide were taken out of the biosphere are:

NTS 2014
Biology
Nutrition
Elimination Tool:

67 / 100

Category: Biology Ch 12 Class 11

Parasites capable of living independently of its host at times is called as _______ parasite.

68 / 100

Category: Biology Ch 4 Class 12

Only one ovary is functional at a time in:

NUMS 2015
Biology
Reproduction
Elimination Tool:

69 / 100

Category: Biology Ch 10 Class 11

Which one of the following is exclusively marine phylum?

NTS 2015 SMBBMC
Biology
Kingdom Animalia
Elimination Tool:

70 / 100

Category: Biology Ch 9 Class 12

Liposomes have/are:

PMC 2021 Tested
Biology
Biotechnology
Elimination Tool:

71 / 100

Category: Biology Ch 2 Class 12

Which of the following animal has a hydrostatic skeleton:

72 / 100

Category: Biology

Nitrogen-cycle is facilitated by ______.

NUMS Mock 3
Biology
Ecosystem

73 / 100

Category: Biology Ch 9 Class 12

Gel electrophoresis is a technique:

PMC 2020
Biology
Biotechnology
Elimination Tool:

74 / 100

Category: Biology

Lymph nodes are not present:

NUMS Mock 1
Biology
Coordination and Control

75 / 100

Category: Biology Ch 1 Class 12

Ureter open into the urinary bladder through:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

76 / 100

Category: Biology Ch 9 Class 12

Organisms that have had a foreign gene inserted into them are

77 / 100

Category: Biology Ch 5 Class 11

Solanum tuberosum is a scientific name of:

78 / 100

Category: Biology Ch 6 Class 12

Locus is defined as:

NUMS 2019 Reconduct
Biology
Chromosomes and DNA
Elimination Tool:

79 / 100

Category: Biology Ch 13 Class 11

As pH of blood decreases, H+ ions increases, which combine the proteins part of hemoglobin, to decrease its ability to bind with:

NUMS 2019 Reconduct
Biology
Gaseous Exchange
Elimination Tool:

80 / 100

Category: Biology Ch 6 Class 12

A tortion of chromatin that is condensed only during cell division is

81 / 100

Category: Biology Ch 13 Class 11

The voice box leads to the trachea which is also called

PMC Practice 1
Biology
Gaseous Exchange
Elimination Tool:

82 / 100

Category: Biology

Q.27 During which of the following levels of biological organization can natural selection occur?

83 / 100

Category: Biology

Q.26 Two pea plants are crossed. One plant is homozygous dominant for purple flowers, and the other is homozygous recessive for white lowers. What fraction of the F2 population will have white lowers?

84 / 100

Category: Biology

Two species can avoid competition and better use the environment’s resources by occupying different ____.

NUMS Mock 4
Biology
Evolution

85 / 100

Category: Biology

The end product of glycolysis in anaerobic respiration is:

NUMS Mock 4
Biology
Bioenergetics

86 / 100

Category: Biology

The term “Loss of appetite” refers to disease:

NUMS Mock 3
Biology
Nutrition

87 / 100

Category: Biology Ch 9 Class 12

Some transgenic bacteria produce a dipeptide sweetener called

88 / 100

Category: Biology Ch 10 Class 12

The wings of birds and the forelegs of a horse are _____ structures.

NUMS 2016
Biology
Evolution
Elimination Tool:

89 / 100

Category: Biology Ch 6 Class 11

E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is:

90 / 100

Category: Biology Ch 3 Class 11

Inactive enzyme precursors such as pepsinogen for pepsin are called as:

PMC Practice 1
Biology
Enzymes
Elimination Tool:

91 / 100

Category: Biology Ch 2 Class 12

Which of the following statement is incorrect about Molluscans?

92 / 100

Category: Biology Ch 10 Class 12

Which animals support Darwin’s view of inheritance of desirable variations?

NTS 2019
Biology
Evolution
Elimination Tool:

93 / 100

Category: Biology Ch 4 Class 11

What is the role of cholesterol in the cell membrane?

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

94 / 100

Category: Biology Ch 2 Class 11

Ptyalin can convert starch into:

NUMS 2015
Biology
Biological Molecules
Elimination Tool:

95 / 100

Category: Biology Ch 6 Class 12

Which statement correctly describes the transcription of DNA?

PMC 2020
Biology
Chromosomes and DNA
Elimination Tool:

96 / 100

Category: Biology

Four plants are present in different environmental conditions. Plant A is present in a warm climate with continuous rainfall, plant B is present in a cool forest, plant C is present in a warm climate with little breeze, while plant D is present in a warm climate with high wind speed. Which one of the above plants will have the highest rate of transpiration?

NUMS Mock 2
Biology
Gaseous Exchange

97 / 100

Category: Biology Ch 7 Class 11

Brown algae are also known as

98 / 100

Category: Biology Ch 7 Class 12

_______ is the stage of mitosis characterized by the physical separation of ________ chromatids.

NTS 2019
Biology
Cell Cycle
Elimination Tool:

99 / 100

Category: Biology Ch 13 Class 12

Hot substance is escaped from inside the earth in the form of

100 / 100

Category: Biology Ch 9 Class 11

The release of droplets of water from hydathodes is called:

PMC 2021 Tested
Biology
Kingdom Plantae
Elimination Tool:

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The average score is 57%

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Structured Practice for Best Entry Test Preparation

This topic-wise and chapter-wise practice test allows students to focus on individual biology concepts, including diagrams, processes, and conceptual questions. Regular practice enhances understanding, sharpens problem-solving skills, and builds confidence to tackle both board and competitive exam questions efficiently.

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Students can access free Biology Practice Test 2 to systematically improve knowledge, recall, and problem-solving abilities. This test is suitable for FSC Board Exams as well as major entry tests, helping students perform better in the biology section. PLS Academy provides these resources to support students in their preparation.

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