Biology Practice Test 4




Biology Practice Test 4

Biology Practice Test 4 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 human anatomy, physiology, microbiology, and ecology, helping students improve accuracy and retention.

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Biology Practice Test 4

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1 / 100

Category: Biology Ch 9 Class 12

The process of replacing or supplementing the defective allele with a functional, normal allele is known as ______.

NTS 2012
Biology
Biotechnology
Elimination Tool:

2 / 100

Category: Biology Ch 11 Class 11

Which component enters into mitochondria after glycolysis?

NUMS 2015
Biology
Bioenergetics
Elimination Tool:

3 / 100

Category: Biology Ch 3 Class 11

When inhibitor binds to enzyme other than active site and alters its structure, then it is called:

NUMS 2020
Biology
Enzymes
Elimination Tool:

4 / 100

Category: Biology

In a marine environment, the ion secreted by the kidney is:

NUMS Mock 1
Biology

5 / 100

Category: Biology Ch 3 Class 11

Which of the following factors affect enzyme activity?

NTS 2011
Biology
Enzymes
Elimination Tool:

6 / 100

Category: Biology Ch 2 Class 12

Unpaired facial bones are:

NUMS 2018
Biology
Support and Movement
Elimination Tool:

7 / 100

Category: Biology Ch 7 Class 12

Crossing over is an exchange of genes between _______ resulting in a mixture of parental characteristics in offspring.

NTS 2019
Biology
Cell Cycle
Elimination Tool:

8 / 100

Category: Biology Ch 13 Class 12

In oceans of tropical regions

9 / 100

Category: Biology

Q.2 Prokaryotic and eukaryotic cells generally have which of the following features in common?

10 / 100

Category: Biology Ch 4 Class 12

The primary oocyte in mammals has which of the following structures around it:

NUMS 2014
Biology
Reproduction
Elimination Tool:

11 / 100

Category: Biology

Q.16 Which of the following changes length during sarcomere contraction?

12 / 100

Category: Biology Ch 5 Class 11

Recent studies on HIV reveal that the virus infects and multiplies in _____ but does NOT cause disease in them.

NUMS 2019 Reconduct
Biology
Bio-diversity | Variety of Life
Elimination Tool:

13 / 100

Category: Biology Ch 1 Class 12

When the temperature of the surrounding environment rises, body responds by:

PMC 2020
Biology
Homeostasis
Elimination Tool:

14 / 100

Category: Biology Ch 5 Class 12

Typical symptoms like enlarged breasts and small testis in male are attributed to:

UHS 2015
Biology
Growth and Development
Elimination Tool:

15 / 100

Category: Biology Ch 2 Class 11

Glucose and fructose join together through _____ to form sucrose.

NUMS 2019 Reconduct
Biology
Biological Molecules
Elimination Tool:

16 / 100

Category: Biology

Q.48 Octopus belongs to phylum mollusca because:

17 / 100

Category: Biology Ch 13 Class 12

Which of the following describes an ecological niche?

NTS 2015 SMBBMC
Biology
Man and His Environment
Elimination Tool:

18 / 100

Category: Biology

Q.5 Evaporation of water from aerial parts of plants is called:

19 / 100

Category: Biology Ch 7 Class 12

Which of the following is a type of cell division that plays an important role in evolution?

NTS 2019
Biology
Cell Cycle
Elimination Tool:

20 / 100

Category: Biology

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

21 / 100

Category: Biology Ch 5 Class 11

The size of smallest virus is:

22 / 100

Category: Biology Ch 1 Class 12

Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of:

23 / 100

Category: Biology

Which of the following organelles are present in all the bacteria?

NUMS Mock 1
Biology
Kingdom Prokaryote

24 / 100

Category: Biology Ch 8 Class 12

What CANNOT be true for a man having B+ve blood group?

NUMS 2019 Reconduct
Biology
Variation and Genetics
Elimination Tool:

25 / 100

Category: Biology Ch 8 Class 12

______ are more common in human males than females.

NUMS 2016
Biology
Variation and Genetics
Elimination Tool:

26 / 100

Category: Biology Ch 5 Class 11

The size of poxvirus is:

27 / 100

Category: Biology Ch 8 Class 12

If we cross round (RR) seeded plants with wrinkled (rr) seed plant, and get F1 round seeded. In F2 generation, what will be genotypic ration of plants try Punnett square method?

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

28 / 100

Category: Biology

Q.49 In reproduction, semen refers to which of the following?

29 / 100

Category: Biology

Q.30 The structure of which bacteriophages resembles a tadpole?

30 / 100

Category: Biology Ch 8 Class 11

In an ecosystem mycorrhizae are an example of:

UHS 2013
Biology
Kingdom Fungi
Elimination Tool:

31 / 100

Category: Biology Ch 13 Class 12

Geothermal energy is

32 / 100

Category: Biology Ch 6 Class 11

Select a method which causes the oxidation of chemical constituent of a bacterial cell:

PMC 2020
Biology
Kingdom Prokaryote
Elimination Tool:

33 / 100

Category: Biology Ch 11 Class 11

Which of the light is mainly absorbed by the plants:

34 / 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:

35 / 100

Category: Biology Ch 3 Class 12

Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?

PMC 2020
Biology
Coordination and Control
Elimination Tool:

36 / 100

Category: Biology Ch 13 Class 11

The respiratory pigment, which has much higher affinity to combine with oxygen is:

NUMS 2016
Biology
Gaseous Exchange
Elimination Tool:

37 / 100

Category: Biology Ch 5 Class 11

Which of the Euglenas (a Protoctista) character resembles that of animals:

38 / 100

Category: Biology Ch 10 Class 11

Which of the following phylum and its examples is NOT correct?

NUMS 2017
Biology
Kingdom Animalia
Elimination Tool:

39 / 100

Category: Biology Ch 4 Class 12

Viviparous animals are those in which

40 / 100

Category: Biology Ch 12 Class 11

In human gut, chylomicrons are formed by the combination of:

NUMS 2020
Biology
Nutrition
Elimination Tool:

41 / 100

Category: Biology Ch 5 Class 12

The fate of each blastomere is foretold. What will that cleavage be?

PMC Sample 2
Biology
Growth and Development
Elimination Tool:

42 / 100

Category: Biology Ch 3 Class 11

Which step causes activation of catalytic site of an enzyme?

43 / 100

Category: Biology Ch 4 Class 11

Which of the following statement(s) is/are correct regarding a nucleus?

I.Stores wastes and other Substances

II.Contains genetic material

III.Helps in cellular transport system

IV.Control centre of the cell

NTS 2017
Biology
Cell Structure and Function
Elimination Tool:

44 / 100

Category: Biology Ch 8 Class 12

Genotype of blood group ‘AB’ in human is ______.

NUMS 2015
Biology
Variation and Genetics
Elimination Tool:

45 / 100

Category: Biology Ch 5 Class 12

Plasticity of cell wall increases during

46 / 100

Category: Biology Ch 6 Class 11

Apparently which bacteria is more resistant to antibiotics?

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

47 / 100

Category: Biology

Q.61 These are properties of lipids_________________

48 / 100

Category: Biology Ch 1 Class 12

Which one of the following group of animals is homeothermic?

NUMS 2014
Biology
Homeostasis
Elimination Tool:

49 / 100

Category: Biology Ch 9 Class 11

Which of the following features differentiate angiosperms from gymnosperms?

UHS 2010
Biology
Kingdom Plantae
Elimination Tool:

50 / 100

Category: Biology Ch 2 Class 11

The bond formed when two or more atoms complete their electron shells by sharing electrons is called:

51 / 100

Category: Biology Ch 5 Class 12

______ is the reconstruction of the lost part of the body.

NTS 2012
Biology
Growth and Development
Elimination Tool:

52 / 100

Category: Biology Ch 13 Class 11

In most birds air sacs are _____ in number

53 / 100

Category: Biology Ch 12 Class 11

Puccinia commonly destroys

54 / 100

Category: Biology Ch 2 Class 11

Which of the following processes is the reverse of condensation?

NTS 2016 SMBBMC
Biology
Biological Molecules
Elimination Tool:

55 / 100

Category: Biology Ch 7 Class 12

The phase of mitosis in which sister chromatids move towards opposite poles:

UHS 2019
Biology
Cell Cycle
Elimination Tool:

56 / 100

Category: Biology Ch 3 Class 12

Deficient production of hormones by adrenal glands results in: .

NTS 2011
Biology
Coordination and Control
Elimination Tool:

57 / 100

Category: Biology Ch 12 Class 11

Digestive system in vertebrates is formed by which germ layer?

NUMS 2014
Biology
Nutrition
Elimination Tool:

58 / 100

Category: Biology Ch 12 Class 11

In fatty liver the fat contents are:

NUMS 2014
Biology
Nutrition
Elimination Tool:

59 / 100

Category: Biology Ch 7 Class 12

Interphase is a phase of the cell cycle defined only by the absence of _______.

NTS 2019
Biology
Cell Cycle
Elimination Tool:

60 / 100

Category: Biology Ch 10 Class 12

Which of the following concepts is attributed to Lamarck?

NUMS 2014
Biology
Evolution
Elimination Tool:

61 / 100

Category: Biology

Q.50 How does each photoexcited electron pass from PS1 to PS2?

62 / 100

Category: Biology Ch 6 Class 11

The size of Spirochete is

63 / 100

Category: Biology Ch 2 Class 12

The process of cartilage formation is known as:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

64 / 100

Category: Biology Ch 4 Class 12

What is the commercial method of producing millions of seedlings in limited time?

NUMS 2016
Biology
Reproduction
Elimination Tool:

65 / 100

Category: Biology Ch 6 Class 11

Which of the following bacteria are thick rigid and spiral?

66 / 100

Category: Biology Ch 10 Class 11

Which one of following is a true fish?

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

67 / 100

Category: Biology Ch 7 Class 11

Freshwater protozoans pump out excess water by a special structure called:

NUMS 2017
Biology
Kingdom Protista
Elimination Tool:

68 / 100

Category: Biology Ch 14 Class 11

The massive accumulation of blood with is a tissue is called as:

NTS 2011
Biology
Transport
Elimination Tool:

69 / 100

Category: Biology Ch 3 Class 11

The number of substrate molecules converted into the product by one molecule of enzyme active site per unit time is called?

PMC Practice 2
Biology
Enzymes
Elimination Tool:

70 / 100

Category: Biology Ch 9 Class 12

Cloning is a form of:

NUMS 2016
Biology
Biotechnology
Elimination Tool:

71 / 100

Category: Biology Ch 11 Class 11

Its membranes are the sites where sunlight energy is trapped and where glucose is formed.

Which organelle is this?

NUMS 2014
Biology
Bioenergetics
Elimination Tool:

72 / 100

Category: Biology Ch 6 Class 12

Within the chromosomes, each chromatid contains ______ DNA molecule:

NUMS 2020
Biology
Chromosomes and DNA
Elimination Tool:

73 / 100

Category: Biology Ch 12 Class 11

Nitrogen-fixing bacteria in root nodules fix nitrogen in soil air into:

NUMS 2015
Biology
Nutrition
Elimination Tool:

74 / 100

Category: Biology Ch 11 Class 11

In the Calvin cycle, the reducing power from NADPH is used during:

NUMS 2019 Reconduct
Biology
Bioenergetics
Elimination Tool:

75 / 100

Category: Biology

Q.1 In all plants the major sites of photosynthesis are?

76 / 100

Category: Biology Ch 9 Class 11

Ferns are included in

77 / 100

Category: Biology Ch 2 Class 12

Joints found at the vertebrates are:

NTS 2014
Biology
Support and Movement
Elimination Tool:

78 / 100

Category: Biology Ch 5 Class 11

The genome of the virus includes the:

PMC Sample 1
Biology
Bio-diversity | Variety of Life
Elimination Tool:

79 / 100

Category: Biology Ch 6 Class 11

Purple non-sulphur bacteria is an example of which of the following?

PMC Practice 2
Biology
Kingdom Prokaryote
Elimination Tool:

80 / 100

Category: Biology

The following statements are about enzymes:

1. They are globular proteins

2. They can be inhibited by competitive inhibitors

3. They are formed in the smooth endoplasmic reticulum

4. There are only found attached to Plasma membranes in the cell

Which statements are correct for all enzymes?

NUMS Mock 3
Biology
Enzymes

81 / 100

Category: Biology Ch 4 Class 12

In parthenocarpy which levels are high in ovaries

82 / 100

Category: Biology Ch 5 Class 11

A combination of alpha interferon and ribavirin is used for the treatment of hepatitis:

NUMS 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool:

83 / 100

Category: Biology Ch 6 Class 11

Which of the following structure provides greater pathogenicity to the bacteria?

84 / 100

Category: Biology

Process ensuring the survival of species over long periods of time, even though individual members of the species die.

NUMS Mock 2
Biology
Man and His Environment

85 / 100

Category: Biology

Q40 How is pyruvate produced in anaerobic conditions?

86 / 100

Category: Biology

Which was the first virus to be successfully crystalized?

NUMS Mock 1
Biology
Bio-diversity | Variety of Life

87 / 100

Category: Biology

Q.12 The least stable RNA present in the cell is:

88 / 100

Category: Biology Ch 8 Class 12

Baldness is most frequent in

89 / 100

Category: Biology Ch 12 Class 11

Dietary fiber passes through to several structures after leaving the stomach. In which order does the dietary fiber pass through the structures?

NTS 2015 DUHS and JSMU
Biology
Nutrition
Elimination Tool:

90 / 100

Category: Biology Ch 3 Class 12

Type of sensations carried by nociceptors are:

91 / 100

Category: Biology Ch 4 Class 12

Development of an egg into zygote without fertilization is called

92 / 100

Category: Biology Ch 5 Class 12

Leukaemia is associated with an increased number of _____ in blood.

NTS 2016 DUHS & JSMU
Biology
Growth and Development
Elimination Tool:

93 / 100

Category: Biology Ch 3 Class 12

Chlorosis, i.e., yellowish hue on the leaves results from

94 / 100

Category: Biology

What is the effect of enzyme DNA ligase?

NUMS Mock 2
Biology
Chromosomes and DNA

95 / 100

Category: Biology Ch 5 Class 11

Which of the following category is most general with its members lest resembling with each other than the other categries:

96 / 100

Category: Biology Ch 7 Class 12

At the beginning of nuclear division, the number of microtubule triplets in two pairs of centrioles that migrate to opposite poles are:

UHS 2015
Biology
Cell Cycle
Elimination Tool:

97 / 100

Category: Biology Ch 10 Class 12

Evolutionary relationships amongst species are reflected in their:

NUMS 2016
Biology
Evolution
Elimination Tool:

98 / 100

Category: Biology Ch 1 Class 12

________ are animals that do not adjust their internal osmolality and are isotonic with their environment.

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

99 / 100

Category: Biology Ch 5 Class 11

Binomial nomenclature was proposed for the first time by:

NTS 2010
Biology
Bio-diversity | Variety of Life
Elimination Tool:

100 / 100

Category: Biology Ch 13 Class 12

Tides are caused by

Your score is

The average score is 61%

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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 4 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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3 responses to “Biology Practice Test 4”

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  2. Anonymous

    Hi

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