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 11

Which of the following is true in angiosperm life cycle?

NTS 2014
Biology
Kingdom Plantae
Elimination Tool:

A) Gametophyte are photosynthetic and partially independent than sporophyte

B) Sporophytes are totally dependent on gametophytes

C) Gametophytes are totally dependent on sporophytes

D) Both gametophytes and sporophytes are totally dependent on each other

2 / 100

Category: Biology Ch 2 Class 12

Pivot joint exists between

NUMS 2014
Biology
Support and Movement
Elimination Tool:

A) Tibia and fibula

C) Humerus and scapula

B) Humerus and ulna

D) Ulna and radius

3 / 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:

A) Spiral and indeterminate

B) Radial and determinate

C) Radial and indeterminate

D) Spiral and determinate

4 / 100

Category: Biology

The thick filaments, in a myofibril of muscles, are made of ________.

NUMS Mock 3
Biology
Support and Movement

A) Myoglobin

B) Myosin

C) Actin

D) Haemoglobin

5 / 100

Category: Biology Ch 6 Class 12

Locus is defined as:

NUMS 2019 Reconduct
Biology
Chromosomes and DNA
Elimination Tool:

A) Position of a gene on the chromosome

B) Appearance of a trait in an individual

C) Partner of a gene pair

D) Gene in an individual for a trait

6 / 100

Category: Biology Ch 8 Class 11

The stored food in fungi is usually lipid droplets of:

NUMS 2017
Biology
Kingdom Fungi
Elimination Tool:

A) Glucose

B) Glycogen

C) Starch

D) Protein

7 / 100

Category: Biology Ch 4 Class 12

Which statement is incorrect?

Climacteric is burst of respiratory activity in fruit ripening

It is associated with ethane production C

It helps in fruit set

It helps in fruit ripening

8 / 100

Category: Biology Ch 10 Class 11

Actinia is the biological name of:

NUMS 2018
Biology
Kingdom Animalia
Elimination Tool:

A) Sea Anemone

B) Corals

C) Obelia

D) Jellyfish

9 / 100

Category: Biology Ch 10 Class 12

Whose theory of natural selection is essentially identical to Darwin’s theory?

NUMS 2019 Cancelled
Biology
Evolution
Elimination Tool:

A) Hardy-Weinberg

B) Alfred Wallace

C) Lyell

D) Mathus

10 / 100

Category: Biology Ch 5 Class 11

The complete, mature and infection virus particle is known as:

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

A) Venome

B) Genome

C) Virion

D) Capsid

11 / 100

Category: Biology Ch 8 Class 12

Which of the following condition is hybrid A. TT B. Tt C. tt D. All of these

All of these

12 / 100

Category: Biology Ch 7 Class 11

Based on molecular data euglenoids are thought to be closely related to

Dinoflagellates

Zooflagellates

Protozoans

Algae

13 / 100

Category: Biology Ch 7 Class 12

Which of the following sub stages does not occur in prophase I?

NTS 2015 SMBBMC
Biology
Cell Cycle
Elimination Tool:

A) Leptotene

B) Zygotene

C) Synapsis

D) Diplotene

14 / 100

Category: Biology Ch 6 Class 11

In which of the following phases of bacterial growth, is the death rate more rapid than the multiplication rate?

NTS 2016 SMBBMC
Biology
Kingdom Prokaryote
Elimination Tool:

A) Stationary phase

B) LAG phase

C) Decline phase

D) LOG phase

15 / 100

Category: Biology Ch 11 Class 11

What is the function of Ribulose?

PMC 2020
Biology
Bioenergetics
Elimination Tool:

A) Intermediates in photosynthesis

B) Respiratory fuel

C) Intermediates in cellular respiration

D) Component of DNA and RNA

16 / 100

Category: Biology Ch 9 Class 11

Which of the following is included in Bryophytes?

NTS 2011
Biology
Kingdom Plantae
Elimination Tool:

A) Mosses

B) Club mosses

C) Ferns

D) Seed plants

17 / 100

Category: Biology Ch 8 Class 11

Constricting ring around nematode is formed by

Arthrobotrys

Pleurotus ostreatus

Mildews

All of these

18 / 100

Category: Biology Ch 3 Class 11

Optimal temperature of enzymes present in human body is

27?C

37?C

47?C

30?C

19 / 100

Category: Biology Ch 3 Class 11

A three dimensional dcavity bearing a specific charge by which the enzyme reacts with its substrate is called

Active site

Binding site

Catalytic site

Allosteric site

20 / 100

Category: Biology Ch 7 Class 11

These protists are mostly unicellular (a few are colonial) organisms with spherical or elongated bodies with a single central nucleus. They possess from one to many long, whip-like flagella that enable them to move. Flagellates move rapidly, pulling themselves forward by lashing flexible flagella that are usually located at the anterior end. Examples include trypanosome, euglena, etc.

The above give lines indicate which of the following group of protozoa:

NUMS 2017
Biology
Kingdom Protista
Elimination Tool:

A) Amoeba

B) Arthropods

C) Foraminifera

D) Zooflagellates

21 / 100

Category: Biology Ch 8 Class 11

The Fungal Cell wall contains:

NUMS 2018
Biology
Kingdom Fungi
Elimination Tool:

A) Peptidoglycan

B) Chitin

C) Suberin

D) Cutin

22 / 100

Category: Biology Ch 2 Class 11

Proteoglycan in cartilages (which consists of polysaccharides) are also attached to:

NUMS 2014
Biology
Biological Molecules
Elimination Tool:

A) Chondroitin

B) Ossein

C) Casein

D) Cartilagin

23 / 100

Category: Biology Ch 11 Class 11

The organisms able to use sunlight directly as a source of energy are

Plants

Animals

Omnivores

Fungi

24 / 100

Category: Biology Ch 4 Class 12

A pollen tube serves to:

NTS 2015 SMBBMC
Biology
Reproduction
Elimination Tool:

A) Produce sperms

B) Store food for the developing embryo

C) Transfer sperms from the stigma to the ovary

D) Produce female gametophytes

25 / 100

Category: Biology Ch 13 Class 11

Booklungs serve the function of respiration in:

NTS 2014
Biology
Gaseous Exchange
Elimination Tool:

A) Scorpion

B) Earthworm

C) Frog

D) Cockroaches

26 / 100

Category: Biology Ch 10 Class 11

Amphibians live on:

NUMS 2016
Biology
Kingdom Animalia
Elimination Tool:

A) Water

B) Water and land

C) Land

D) Air

27 / 100

Category: Biology

Q.24 When was the bacteriopbage phenomena rediscovered by D’Herelle?

A. 1918

B. 1917

C. 1920

D. 1990

28 / 100

Category: Biology Ch 9 Class 11

Which of the following statements is a correct distinction between autotrophs and heterotrophs?

PMC Practice 7
Biology
Kingdom Plantae
Elimination Tool:

A) Only heterotrophs require chemical compunds from the environment

B) Cellular respiration is unique to heterotrophs

C) Autotrophs, but not heterotrophs can nourish themselves beginning with nutrients that are entirely inorganic.

D) Only heterotrophs have mitochondria

29 / 100

Category: Biology

Phenylmethyl ketone can be converted into ethyl benzene in one step by using:

NUMS Mock 4
Chemistry
Aldehydes and Ketones

A) LiAlH4

B) Zn(Hg)-HCl

C) NaBH4

D) CH3Mgl

30 / 100

Category: Biology Ch 12 Class 11

Nodules on roots of leguminous plants have _____ bacteria

Anaerobic

Nitrogen fixing

Nitrifying

Ammonifying

31 / 100

Category: Biology Ch 7 Class 12

Condensation of chromosomes reaches to the maximum during:

NUMS 2015
Biology
Cell Cycle
Elimination Tool:

A) Zygote

B) Pachytene

D) Diakinesis

C) Diplotene

32 / 100

Category: Biology

Q.9 This is a reduced compound

A. CO2

B. O2

C. NADH

D. NAD

33 / 100

Category: Biology Ch 10 Class 11

Which one of the following animals possesses an open circulatory system:

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

A) Amoeba

B) Earthworm

C) Grasshopper

D) Man

34 / 100

Category: Biology Ch 8 Class 11

Fungi do not contain:

NTS 2010
Biology
Kingdom Fungi
Elimination Tool:

A) Cell wall

C) Chlorophyll

B) Hyphae

D) Mycelium

35 / 100

Category: Biology Ch 11 Class 11

Of the following which one is not an energy releasing process?

Glycolysis

Respiration

Photosynthesis

Kreb's cycle

36 / 100

Category: Biology

The position of an organism in a food chain of an ecosystem called:

NUMS Mock 2
Biology
Man and His Environment

A) Level of ecosystem

B) Food chain

C) Food web

D) Trophic level

37 / 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:

A) Phagocytes

B) Complement Proteins

C) Cytokines

D) Atherosclerosis

38 / 100

Category: Biology

The idea that opposed the idea of abiogenesis was proposed by?

NUMS Mock 4
Biology
Cell Structure and Function

A) Robert Hooke

B) Robert Brown

C) Rudolph Virchow

D) Lorenz Oken

39 / 100

Category: Biology Ch 8 Class 11

Coenocytic hyphae are also known as

Septate

. Perforated hyphae

Aseptate

Uninucleate hyphae

40 / 100

Category: Biology Ch 13 Class 11

______ respiration is the process by which cell utilized oxygen and produces CO2

Cellular

Organismic

Both of these

None of these

41 / 100

Category: Biology

What is the effect of enzyme DNA ligase?

NUMS Mock 2
Biology
Chromosomes and DNA

A) DNA is broken up at specific sites

B) DNA fragments are joined together

C) DNA replication occurs

D) DNA transcription occurs

42 / 100

Category: Biology Ch 3 Class 12

Which of the following is antagonist to Auxin in terms of promotion of stem growth?

Gibberellins

Cytokinins

Abscisic Acid

none of these.

43 / 100

Category: Biology Ch 9 Class 11

Which of the following of bryophytes are the simplest one?

Porella

Funaria

Anthocerus

Polytrichum

44 / 100

Category: Biology Ch 10 Class 12

Which one is NOT a continuous trait?

NUMS 2019 Reconduct
Biology
Evolution
Elimination Tool:

A) Human height

B) Tongue rolling

C) Wheat grain color

D) Human skin color

45 / 100

Category: Biology Ch 13 Class 12

Wild life refers to

All plants of the world

All non cultivated plant

Non domesticated animals

Both b and c

46 / 100

Category: Biology

Q.32 Which one of the following is not a feature of the nervous system of Planaria?

A. Neurons are differentiated into sensory, motor and associative neurons.

B. Nerves are present.

C. No specialized sensory organs are present

D. All of the above.

47 / 100

Category: Biology Ch 4 Class 12

Hydra reproduces asexually by:

NUMS 2014
Biology
Reproduction
Elimination Tool:

A) Binary fission

B) Multiple fission

D) Regeneration

C) Budding

48 / 100

Category: Biology Ch 7 Class 11

Bacteria that can only survive in the presence of oxygen?

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

A) Facultative anaerobes

B) Obligate aerobes

C) Obligate anaerobes

D) Facultative aerobes

49 / 100

Category: Biology

Now-a-days every newborn gets regular shots of vaccine for polio. It contains _________ for polio to make a child immune against this disease.

NUMS Mock 4
Biology
Bio-diversity | Variety of Life

A) Antibiotics

B) Antibodies

C) Antigens

D) Antisera

50 / 100

Category: Biology Ch 6 Class 12

Transfer of genetic material from one cell to another that can alter the genetic makeup of recipient cell is called

Mutation

Transuction

Replication

Variation

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:

A) Radiation

B) All of these

C) Chemicals

D) Virus

52 / 100

Category: Biology

DNA made by joining pieces from two or more different sources:

NUMS Mock 3
Biology
Biotechnology

A) Probes

B) Restriction endonuclease

C) Mutated DNA

D) Recombinant DNA

53 / 100

Category: Biology Ch 10 Class 11

Which one of the following is a fish?

NTS 2012
Biology
Kingdom Animalia
Elimination Tool:

A) Flying fish

B) Salmon

C) Sea horse

D) All of the above

54 / 100

Category: Biology Ch 4 Class 12

In which organism males are haploid

Aphids

Honey bee

Mosquito

Butterfly

55 / 100

Category: Biology Ch 2 Class 12

Molluscs have an exoskeleton made up of:

NTS 2016 DUHS & JSMU
Biology
Support and Movement
Elimination Tool:

A) Protein

B) Silica

D) Cuticles

C) CaCO3

56 / 100

Category: Biology Ch 2 Class 11

When the hydroxyl group, -OH, of the carboxyl group, -COOH, of an amino acid is linked with the hydrogen of the amino group, -NH2, of another amino acid, ______ is released and a peptide bond is formed.

NUMS 2019 Reconduct
Biology
Biological Molecules
Elimination Tool:

A) NH3

B) CO2

C) H2O

D) O2

57 / 100

Category: Biology

Q.50 Which of the following hormones is essential for the production of sperms?

A. LH
B. Estrogen
C. Gonadotrophin hormones
D. Testosterone

A. LH

B. Estrogen

C. Gonadotrophin hormones

D. Testosterone

58 / 100

Category: Biology Ch 3 Class 11

Which step causes activation of catalytic site of an enzyme?

Change in pH of the surroundings.

Formation of Enzyme Susstrate complex.

Change in the charge of the active site.

Change in temperature

59 / 100

Category: Biology Ch 8 Class 11

An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called:

Mycorrizael association

Endomycorrhizae

Ectomycorrhizae

Lichen

60 / 100

Category: Biology Ch 13 Class 11

Active site of Rubisco is evolved to bind

CO2

Both of these

H2O

61 / 100

Category: Biology Ch 3 Class 11

A reaction will proceed faster if the activation energy is?

PMC Sample 1
Biology
Enzymes
Elimination Tool:

A) High

B) Low

C) Remains the same

D) None of these options is correct

62 / 100

Category: Biology Ch 11 Class 12

Study of relationship of organisms to their environment is

Ecology

Palaentology

Geology

None of these

63 / 100

Category: Biology Ch 7 Class 12

DNA is synthesized and chromosome number is doubled in

G1 phase

S phase

G2 phase

G0 phase

64 / 100

Category: Biology Ch 12 Class 11

Amylase is not produced by the following type(s) of salivary gland:

NUMS 2015
Biology
Nutrition
Elimination Tool:

A) Parotid

B) Submandibular

C) Sublingual

D) None of the given options are correct

65 / 100

Category: Biology Ch 1 Class 12

The condition of a stable internal environment in an organism is:

NTS 2015 SMBBMC
Biology
Homeostasis
Elimination Tool:

A) Coordination

B) Organisation

C) Homeostasis

D) Integration

66 / 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:

B) 1:1

C) 2:1

D) 1:1:2

E) 1:2:1

67 / 100

Category: Biology

Population growth is checked by which of the following?

NUMS Mock 3
Biology
Evolution

A) No competition

B) No polymorphism

C) Polymorphism

D) Competiton

68 / 100

Category: Biology Ch 10 Class 12

Neo-Darwinism has integrated discoveries and ideas from

Taxonomy

Paleontology

Genetics

All of these

69 / 100

Category: Biology Ch 7 Class 11

How are flat worms not similar to round worms?

PMC Practice 4
Biology
Kingdom Protista
Elimination Tool:

A) They are both acoelmates.

B) They are both triploblastic.

C) They both show bilateral symmetry.

D) They are both worms.

70 / 100

Category: Biology Ch 3 Class 12

Na+ -K+ ATPase pump is important for:

Maintenance of resting potential.

Massive out flux of K+ after depolarization.

Recovery of resting potential.

Conversion of resting potential into action potential.

71 / 100

Category: Biology Ch 2 Class 12

The movement of plants in response to touch stimulus is called:

NTS 2012
Biology
Support and Movement
Elimination Tool:

A) Hydrotropism

B) Chemotropism

C) Geotropism

D) Thigmotropism

72 / 100

Category: Biology

Q.11 Which of the following statement regarding lecithin is correct?

A. Contain only one fatty acid

B. Choline attached with phosphatidic acid at carbon 3

C. Phosphate group is positively charged

D. Have five carbon glycerol molecules

73 / 100

Category: Biology

The causes of Cyanosis include:

NUMS Mock 2
Biology
Transport

A) Deficiency of vitamin C

B) Varicella-zoster virus

C) Degeneration of the cartilage of joints

D) Ventricular septum defect

74 / 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:

A) Epinephrine

B) Serotonin

C) Dopamine

D) Endorphins

75 / 100

Category: Biology Ch 1 Class 12

Right kidney is slightly lower than left kidney due to:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

A) Heart

B) Liver

D) Lungs

C) Pancreas

76 / 100

Category: Biology Ch 5 Class 12

Tails can be regenerated in:

NUMS 2015
Biology
Growth and Development
Elimination Tool:

A) The larvae of amphibians

B) Lizards

C) Both lizards and the larvae of amphibians

D) None of the given options

77 / 100

Category: Biology

The scientific name of thorn Apple is?

NUMS Mock 2
Biology
Kingdom Plantae

A) Sycopodium phlogmaria

B) Anthocoros fusiform

C) Ginkgo biloba

D) Datura alba

78 / 100

Category: Biology Ch 6 Class 12

Which statement is correct?

Leading strand elongates away from the replication fork

Lagging strand elongates towards the replication fork

Lagging strand is constructed discontinuously.

Both a and b

79 / 100

Category: Biology

Q.46 The path of electrons through the two photosystems is called?

A. S scheme

B.X scheme

C.Z Scheme

D. Y scheme

80 / 100

Category: Biology Ch 1 Class 12

The only possible treatment in end stage renal failure is:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

A) Hemodialysis

B) Peritoneal dialysis

C) Lithotripsy

D) Kidney transplantation

81 / 100

Category: Biology Ch 11 Class 11

The point at which there is no net exchange of gases between leaves and atmosphere is known as

Neutral point

Compensation point

Parallel point

Competitive point

82 / 100

Category: Biology

Q.65 Which of the following statements about the systemic affect of bacterial cells are true?

A. Gram-negative bacteria are more likely to cause systemic effects because their lack of an outer membrane means they can more quickly infect host cells.

B. Gram-negative bacteria are more likely to cause Systemic effects because the outer membrane protects them from antibiotics

C. Both A and B

D. None of these

83 / 100

Category: Biology Ch 5 Class 12

Germ cells give rise to:

NTS 2012
Biology
Growth and Development
Elimination Tool:

A) Legs

B) Head

C) Eggs and sperms

D) Hands

84 / 100

Category: Biology Ch 5 Class 12

In sexual reproduction, plants have diplohaplontic life cycle with alternating

Diploid sporophyte and haploid gametophyte generations

Haploid sporophyte and diploid gametophyte generations

Diploid sporophyte and diploid gametophyte generations

Haploid sporophyte and haploid gametophyte generations

85 / 100

Category: Biology

Q.8 Which of the following structure provides greater pathogenicity to the bacteria?

A. slime

B. cell wall

C. cell membrane

D. capsule

86 / 100

Category: Biology

Which of the following part of the cell is described as a fluid mosaic?

NUMS Mock 4
Biology
Cell Structure and Function

A) Chloroplast.

B) Vacuole.

C) Cell membrane.

D) Endoplasmic Reticulum.

87 / 100

Category: Biology Ch 13 Class 12

Hydroelectricity is generated by using ______ of falling water.

Potential energy

Gravitational energy

Kinetic energy

. All of these

88 / 100

Category: Biology

Q.51 The water splitting step of photosynthesis is called?

A Hydrolysis

B. Chemiosmosis

C. Photolysis

D. Photosynthesis

89 / 100

Category: Biology Ch 14 Class 11

The chemical nature of an antibody is:

NUMS 2016
Biology
Transport
Elimination Tool:

A) Glycoprotein

B) Glycolipids

C) Lipoproteins

D) Polysaccharides

90 / 100

Category: Biology Ch 11 Class 11

FADH2 is produced during which step of the Krebs cycle?

NUMS 2019 Reconduct
Biology
Bioenergetics
Elimination Tool:

A) When Isocitrate is converted into α – ketoglutarate

B) When α – ketoglutarate is converted into Succinate

C) When Succinate is converted into Fumarate

D) When Fumarate is converted into Maltose

91 / 100

Category: Biology Ch 2 Class 12

Number of bones in the skull:

NUMS 2016
Biology
Support and Movement
Elimination Tool:

A) 22

B) 26

C) 24

D) 28

92 / 100

Category: Biology Ch 4 Class 12

What is critical in photoperiodism?

Length of light period

Length of dark period

Both a and b

None of these

93 / 100

Category: Biology Ch 8 Class 12

In ‘Complete Dominance’:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

A) Different alleles of a gene are both expressed in heterozygous condition

B) One allele (R) is completely dominant over the other (r) and the presence of the recessive allele is functionally hidden, so the heterozygote (Rr) has the same round phenotype as (RR) homozygote.

C) The phenotype of the heterozygote is intermediate between phenotypes of the two homozygotes

D) Gene mutations may produce many different alleles of a gene

94 / 100

Category: Biology Ch 10 Class 12

Archaebacteria can survive at

150?C

300?C

120?C

200?C

95 / 100

Category: Biology

Q.23 The vectors for disease spread belong to which of the following phylum?

A. Porifera

B. Platyhelminthes

C. Annelida

D. Arthropoda

96 / 100

Category: Biology Ch 12 Class 11

Of the following, which one has more variety of nutrition?

Animals

Bacteria

Plants

Fungi

97 / 100

Category: Biology Ch 4 Class 12

Fallopian tube in humans is important for:

NUMS 2018
Biology
Reproduction
Elimination Tool:

A) Ovulation

B) Primary oocyte

D) Ova

C) Secondary oocyte

98 / 100

Category: Biology

Q.22 Pick the one which releases anticoagulant in human intestine to prevent clotting:

A. Ascaris lumbricoides

B. Ancylostoma duodenale

C. Enterobius vermicularis

D. Hirudo medicinalis

99 / 100

Category: Biology Ch 2 Class 11

Which of the following has the ability to develop ester linkage with the OH group of Pentose sugar?

NUMS 2017
Biology
Biological Molecules
Elimination Tool:

A) Purine

B) Pyrimidine

C) H3PO4

D) HNO3

100 / 100

Category: Biology Ch 9 Class 12

Liposomes have/are:

PMC 2021 Tested
Biology
Biotechnology
Elimination Tool:

A) Fluid in center

B) Lipid bilayer

C) All of these

D) Carrier for drugs

Your score is

The average score is 61%

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