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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1 / 100

Category: Biology Ch 12 Class 12

Ecosystem of Shogran is

Coniferous alpine

Boreal

temperate deciduous

Grassland

2 / 100

Category: Biology Ch 3 Class 12

Which brain portion is responsible for controlling body coordination?

NUMS 2020
Biology
Coordination and Control
Elimination Tool:

A) Medulla

B) Amygdala

C) Cerebellum

D) Pons

3 / 100

Category: Biology

The sympathetic nervous system causes which of the following?

NUMS Mock 2
Biology
Coordination and Control

A) Constriction of the pupil

B) Decreased heart rate

C) Increased gastric section

E) Increased respiration

4 / 100

Category: Biology Ch 12 Class 11

Optimum pH for action of pepsin and salivary amylase is

NTS 2016 DUHS & JSMU
Biology
Nutrition
Elimination Tool:

A) 3.5 and 7.7 respectively

B) 1.8 and 6.8 respectively

C) 6.8 and 7.4 respectively

D) 1.8 and 7.4 respectively

5 / 100

Category: Biology

DNA fingerprinting is basically done for:

NUMS Mock 1
Biology
Biotechnology

A) DNA cloning

B) DNA analysis

C) DNA sequencing

D) DNA splicing

6 / 100

Category: Biology Ch 14 Class 11

The causes of Cyanosis include:

NTS 2010
Biology
Transport
Elimination Tool:

A) Deficiency of vitamin C

B) Varicella-zoster virus

C) Degeneration of the cartilage of joints

D) Ventricular septum defect

7 / 100

Category: Biology

Q.41 The stretch reflex is also known as:

A. Stretch reflex

B. Spinal reflex

C. Golgi tendon reflex

D. Myotatic reflex

8 / 100

Category: Biology Ch 4 Class 11

Which of the following offers an active barrier between the cell content and their environment by allowing only selective substances to pass through it?

NUMS 2019 Reconduct
Biology
Cell Structure and Function
Elimination Tool:

A) Cell wall

B) Plasma membrane

C) Nuclear membrane

D) Vacuole

9 / 100

Category: Biology

Q.9 A surfactant is essential for:

A. Efficient gas exchange

B. Maintaining structural integrity of alveoli

C. Both A and B

D. None of these

10 / 100

Category: Biology Ch 10 Class 12

Carolus Linnaeus was believer of which of the following?

PMC Sample 1
Biology
Evolution
Elimination Tool:

A) special creation

B) natural selection

C) catastrophism

D) Inheritance of acquired characters

11 / 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:

A) It can work at high speed.

B) It can withstand high denaturation temperature.

C) It can withstand low denaturation temperature.

D) It can be used again and again.

12 / 100

Category: Biology Ch 12 Class 11

Milk drinking babies have an additional enzyme called:

NUMS 2016
Biology
Nutrition
Elimination Tool:

A) Rennin

B) Amylase

C) Lipase

D) None of these options are correct

13 / 100

Category: Biology Ch 13 Class 12

In a forest, there are a lot of plants; trees, shrubs, and herbs. What will the Palm trees face if they grow in the same forest?

NTS 2019
Biology
Man and His Environment
Elimination Tool:

A) Intraspecific competition.

B) Interspecific competition

C) Environmental competition

D) All of the above

14 / 100

Category: Biology Ch 9 Class 12

Genetic engineering has been successfully used for producing;

UHS 2019
Biology
Biotechnology
Elimination Tool:

A) Animals, with inferior traits.

B) Transgenic mice for testing safety of polio vaccine before use in humans

C) Animals, that have the same genetic constitution.

D) None of the above

15 / 100

Category: Biology Ch 10 Class 12

Change in frequency of alleles that occurs by chance Is called as:

UHS 2019
Biology
Evolution
Elimination Tool:

A) Genetic drift

B) Mutation

C) Migration

D) Natural selection

16 / 100

Category: Biology

Q.2 The set of all genes in any population is termed as?

A. population pool

B. species pool

C. gene pool

D. all of these

17 / 100

Category: Biology

Phenylketonuria is

NUMS Mock 2
Biology
Chromosomes and DNA

A) Sex linked dominant trait

B) Sex linked recessive trait

C) Autosomal dominant trait

D) Autosomal recessive trait

18 / 100

Category: Biology Ch 11 Class 12

Plants growing in xeric conditions are called

Spherophytes

Mesophytes

Xerophytes

Teridophytes

19 / 100

Category: Biology Ch 5 Class 11

Viruses resemble living things because they:

NTS 2017
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Circulate

B) Move

C) Reproduce

D) Are crystalline

20 / 100

Category: Biology Ch 6 Class 12

The chromosomes with equal arms are called:

NTS 2018
Biology
Chromosomes and DNA
Elimination Tool:

A) Metacentric

B) Submetacentric

C) Acrocentric

D) Telocentric

21 / 100

Category: Biology Ch 6 Class 11

Apparently which bacteria is more resistant to antibiotics?

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

A) Gram-positive bacteria

B) Gram-negative bacteria

C) Both Gram-negative and positive bacteria

D) None of these options are correct

22 / 100

Category: Biology Ch 2 Class 12

Pectoral fins are enlarged in:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

A) Whales

B) Sharks

C) Skates

D) Plaice

23 / 100

Category: Biology

Which of the following basic structural level of proteins is indicated by an association of two alpha and two beta chains in the haemoglobin molecule?

NUMS Mock 4
Biology
Biological Molecules

A) Primary structure

B) Secondary structure

C) Tertiary structure

D) Quatenary Structure

24 / 100

Category: Biology Ch 9 Class 12

By PCR we mean:

UHS 2018
Biology
Biotechnology
Elimination Tool:

A) Polymerase chronic reaction

B) Polymerase chain reaction

C) Polymerase copy reaction

D) Polymerase cross reaction

25 / 100

Category: Biology Ch 13 Class 11

Chest cavity is bounded by ribs and muscles on the sides, while the floor of chest cavity is called:

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

A) Pleura

B) Alveoli

C) Chest cage

D) Diaphragm

26 / 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

27 / 100

Category: Biology Ch 11 Class 12

All populations within an ecosystem interconnected to one another are known as

Species

Family

Community

Biomes

28 / 100

Category: Biology Ch 14 Class 11

The only vein in the human body carrying oxygenated blood is:

NUMS 2020
Biology
Transport
Elimination Tool:

A) Femoral

B) Pulmonary

C) Renal

D) Iliac

29 / 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

A) Plant B

B) Plant D

C) Plant A

D) Plant C

30 / 100

Category: Biology Ch 6 Class 11

Cyanobacteria have which of the following type of cell wall?

PMC Sample 2
Biology
Kingdom Prokaryote
Elimination Tool:

A) Gram positive

B) Gram negative

C) Cellulose

D) Acid fast

31 / 100

Category: Biology Ch 9 Class 11

Mosses are included in sub-division

Anthoceropsida

Hepaticopsida

Bryopsida

Lycopsida

32 / 100

Category: Biology

Q.47 Which of the following are believed to have common origin with annelids?

A. Nematodes

B. Arthropods

C. Molluses

D. None of these

33 / 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

34 / 100

Category: Biology

The system responsible for fighting the pathogens is:

NUMS Mock 4
Biology
Transport

A) Muscular System

B) Endocrine System

C) Nervous System

D) Immune System

35 / 100

Category: Biology

Given figures shows:

NUMS Mock 4
Biology
Gaseous Exchange

A) Structure of Lenticel

B) Hydathode showing gaseous vapour exchange

C) Fungus reproducing by spore formation

D) Algae reproducing by spore formation

36 / 100

Category: Biology Ch 7 Class 12

Meiosis occur in

Diploid cells only

Haploid cells only

Both diploid and haploid cells

Monoploid cells

37 / 100

Category: Biology Ch 11 Class 11

Which of the following statement about the head of a chlorophyll molecule is incorrect:

It is a porphyrin ring or tetrapyrrole ring structure

It is flat, square and light absorbing

Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.

It is hydrophobic

38 / 100

Category: Biology Ch 10 Class 11

Opposable thumbs are characteristic features of

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

A) Lagomorpha

B) Primates

C) Ederitate

D) None of these

39 / 100

Category: Biology

The prolactin hormone, responsible for the activation of mammary glands to start producing milk, is a hormone of the:

NUMS Mock 3
Biology
Coordination and Control

A) Pituitary gland

B) Pancreas

C) Thyroid gland

D) Thymus gland

40 / 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.

41 / 100

Category: Biology Ch 1 Class 12

As an excretory organ, liver:

PMC 2020
Biology
Homeostasis
Elimination Tool:

A) Detoxifies many chemical poisons

B) Produces ammonia for excretion by the kidneys

C) Produces urea and uric acids from the nitrogen of amino acids

D) All of the above

42 / 100

Category: Biology Ch 2 Class 12

Tendon is made up of:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

A) Yellow fibrous connective tissue

B) Modified white fibrous tissue

C) Areolar tissue

D) Adipose tissue

43 / 100

Category: Biology Ch 2 Class 12

The number of vertebrate in horse neck are:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

A) 5

B) 6

C) 7

D) 10

44 / 100

Category: Biology

Q.51 Which of the following is the respiratory surface in human beings?

A. Lungs

B. Alveoli

C. Windpipe

D. alveolar duct

45 / 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

46 / 100

Category: Biology

Which of the following occurs in the body in response to the secretion of Glucagon?

NUMS Mock 2
Biology
Homeostasis

A) Conversion of glucose to glycogen in liver cells

B) Decrease in blood glucose concentration

C) Increased uptake of glucose by muscle cells

D) Production of cyclic AMP in target cells

47 / 100

Category: Biology Ch 4 Class 11

Percentage of proteins in cell membrane is

20-40%

40-50%

60-80%

80-100%

48 / 100

Category: Biology Ch 3 Class 12

Which of the following is used in brewing industry to promote malting:

Gibberellins

Cytokinins

Auxins

Abscisic Acid

49 / 100

Category: Biology Ch 12 Class 11

Deficiency of K+ causes:

Stunted growth & strong chlorosis

No electron transport chains

Premature death of leaves.

Stunted growth of roots.

50 / 100

Category: Biology Ch 2 Class 11

% of water in brain cells is

20%

80%

85%

90%

51 / 100

Category: Biology Ch 1 Class 12

Glomerulus in kidneys is made up of:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

A) Loop of vessels

B) Tubular epithelium

C) Ball of capillaries

D) Cup-shaped swelling

52 / 100

Category: Biology Ch 6 Class 12

Genetic information in the DNA is encoded as:

NTS 2018
Biology
Chromosomes and DNA
Elimination Tool:

A) Deoxyribose sugar

B) Ribose sugar

C) Phosphate group

D) Sequence of nitrogenous bases

53 / 100

Category: Biology Ch 2 Class 12

Which one of the following muscles are considered as “Voluntary muscles”?

PMC 2020
Biology
Support and Movement
Elimination Tool:

A) Smooth muscles

B) Cardiac muscles

C) Skeletal muscles

D) Glandular muscles

54 / 100

Category: Biology Ch 9 Class 11

What is an example of sperms of liverworts, mosses, ferns which move towards archegonia, in response to nucleic acid released by the ovum?

PMC Practice 7
Biology
Kingdom Plantae
Elimination Tool:

A) Chemotropic movement

B) Chemonastic movement

C) Haptonastic movement

D) Chemotactic movement

55 / 100

Category: Biology

Q40 How is pyruvate produced in anaerobic conditions?

A. Alcoholic fermentation

B. Lactic acid fermentation

C. Respiration

D. Both A and B

56 / 100

Category: Biology Ch 6 Class 12

Who discovered DNA?

P.A.Levene

Frederick Griffith

Friedrich Miescher

Rosalind Franklin

57 / 100

Category: Biology Ch 2 Class 11

Which type of protein structure contains the three dimensional structure?

NTS 2013
Biology
Biological Molecules
Elimination Tool:

A) Primary

B) Secondary

C) Tertiary

D) Quaternary

58 / 100

Category: Biology Ch 13 Class 11

When abdomen expands, the number of spiracles open is

59 / 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

60 / 100

Category: Biology Ch 9 Class 11

Ferns are included in

Psilopsida

Lycopsida

Sphenopsida

Pteropsida

61 / 100

Category: Biology Ch 2 Class 12

Ecdysone is

An enzyme that digest endocuticle during an arthropodal ecdysis.

A newly formed exoskeleton in authropods

A hormone that regulates moulting in arthropods.

A process that involves moulting.

62 / 100

Category: Biology Ch 13 Class 12

When resources gets scarce, the population growth?

PMC Practice 1
Biology
Man and His Environment
Elimination Tool:

A) Becomes fast

B) Slows down

C) Remains same

D) None of these

63 / 100

Category: Biology Ch 4 Class 12

Gametes in animals are produced by

Mitosis

RedMeiosis

BlueFission

Apomixis

64 / 100

Category: Biology

The smaller (40S) of ribosome combines with larger subunit (60S) in the presence of Mg2+ ion to form _____ particle.

NUMS Mock 3
Biology
Cell Structure and Function

A) 100 S

B) 90 S

C) 80 S

D) 70 S

65 / 100

Category: Biology Ch 10 Class 11

All of the following are mammals EXCEPT the:

NTS 2017
Biology
Kingdom Animalia
Elimination Tool:

A) Porpoise

B) Shark

C) Whale

D) Walrus

66 / 100

Category: Biology Ch 5 Class 12

The individual with harelip shows which of the following conditions?

NUMS 2014
Biology
Growth and Development
Elimination Tool:

A) Hard palate

B) Polydactyl

D) Microcephale

C) Cleft Palate

67 / 100

Category: Biology

Q.27 In the process of esterification OH is derived from?

A. Ether

B. Alcohol

C. Water

D. Both A and B

68 / 100

Category: Biology

Gel electrophoresis is a technique:

NUMS Mock 1
Biology
Biotechnology

A) Employed by forensic scientist to assist in the identification of the individuals by their respective type of DNA

B) Collect all the genes found in one complete set of chromosome

C) Is a technique to separate different sizeds fragment of charge bearing polymers (proteins, RNA or DNA)

D) Grows single cell or a group of cells in a glass ware on artificial medium under aseptic conditions

69 / 100

Category: Biology Ch 10 Class 11

Which of the following phyla of Kingdom Animalia do humans belong to?

NTS 2018
Biology
Kingdom Animalia
Elimination Tool:

A) Mollusca

B) Arthropoda

C) Echinodermata

D) Chordata

70 / 100

Category: Biology Ch 9 Class 12

The cells are held together by a Ca-pectate layer are called as:

NUMS 2016
Biology
Biotechnology
Elimination Tool:

A) Primary cell wall

B) Secondary cell wall

C) Middle lamella

D) Tertiary cell wall

71 / 100

Category: Biology Ch 4 Class 12

In human females, oocytes are held in the second metaphase until ________.

NUMS 2019 Reconduct
Biology
Reproduction
Elimination Tool:

A) Death

B) Birth

C) Ovulation

D) Fertilization

72 / 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

73 / 100

Category: Biology Ch 7 Class 11

Which of the following statement about Kingdom Protista is incorrect?

Their members have characteristics which separate them from other kingdoms

They only include unicellular aquatic eukaryotic organisms.

They do not develop from Blastula or embryo.

They contain ancestors for fungi plants & animals

74 / 100

Category: Biology Ch 13 Class 11

Functional units of lungs are called

Alveoli

Air sacs

Parabronchi

None of these

75 / 100

Category: Biology Ch 8 Class 12

The law of dominance is illustrated in the garden pea by:

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

B) Heterozygous tall x heterozygous tall

C) Homozygous tall x homozygous tall

D) Pure short x pure short

E) Homozygous tall x pure short

76 / 100

Category: Biology Ch 1 Class 12

Negative feedback mechanism is the characteristic of which class?

NUMS 2020
Biology
Homeostasis
Elimination Tool:

A) Class Fish

B) Class Amphibia

C) Class Reptilia

D) Class Mammalia

77 / 100

Category: Biology Ch 8 Class 12

A man with blood group “A” marries a woman of blood group “B”. Both are heterozygous. What is the off-springs having phenotype “O”

Zero

25%

50%

75%

78 / 100

Category: Biology

Q.49 Another name for the sex cell is:

A. Hormone

B. Gamete

C. Zygote

D. Testicle

79 / 100

Category: Biology Ch 12 Class 11

Fear of getting obese is termed as:

NUMS 2019 Cancelled
Biology
Nutrition
Elimination Tool:

A) Bulimia nervosa

B) Anorexia nervosa

C) Dyspepsia

D) Obesity

80 / 100

Category: Biology Ch 14 Class 11

T-Lymphocytes are matured in thymus glands and they are produced in:

NUMS 2016
Biology
Transport
Elimination Tool:

A) Thymus glands

B) Bone marrow

D) Heart

C) Pancreas

81 / 100

Category: Biology Ch 8 Class 12

Which traits are most likely to affect men than women?

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

A) X linked recessive

B) X linked dominant

C) Autosomal dominant

D) Autosomal recessive

82 / 100

Category: Biology Ch 3 Class 11

Excessive increase in temperature of medium causes the enzyme molecule to

Activate

Unaffected

Denatured

None of these.

83 / 100

Category: Biology Ch 1 Class 12

Rapid movement of leaves of mimosa on touching is an example of :

Turgor movement

Nastic movement

Tropic movements.

Growth movement

84 / 100

Category: Biology Ch 6 Class 11

In a bacterial cell, plasma membrane with all things present within it is called:

PMC Sample 3
Biology
Kingdom Prokaryote
Elimination Tool:

A) Cytoplasmic matrix

B) Cytoplasm

C) Protoplast

D) Cell Structure

85 / 100

Category: Biology Ch 2 Class 11

Which bond provides stability to complex carbohydrate molecules?

C-H

C-O

C-C

C-N

86 / 100

Category: Biology Ch 1 Class 12

Which one is not a nitrogen waste?

NUMS 2018
Biology
Homeostasis
Elimination Tool:

A) Hypoxanthine

B) Xanthophyll

C) Adenine

E) Citrulline

87 / 100

Category: Biology Ch 10 Class 11

Select an anamniote from the following:

PMC 2020
Biology
Kingdom Animalia
Elimination Tool:

A) Snake

B) Parrot

C) Frog

D) Crocodile

88 / 100

Category: Biology

Which artery supplies blood to the liver?

NUMS Mock 1
Biology
Transport

A) Pulmonary artery

B) Hepatic artery

C) Celiac artery

D) Thoracic artery

89 / 100

Category: Biology Ch 9 Class 11

What is the strengthening material of the prokaryotic cell wall?

PMC Practice 7
Biology
Kingdom Plantae
Elimination Tool:

A) Cellulose

B) Chitin

C) Silica waxes and lignin

D) Peptidoglycan or murein

90 / 100

Category: Biology Ch 8 Class 11

All of the following are characteristics of kingdom fungi except:

NUMS 2017
Biology
Kingdom Fungi
Elimination Tool:

A) Heterotrophy

B) Sessil

C) Cell wall

D) None of the above

91 / 100

Category: Biology Ch 3 Class 12

The prolactin hormone, responsible for the activation of mammary glands to start producing milk, is a hormone of the:

NTS 2010
Biology
Coordination and Control
Elimination Tool:

A) Pituitary gland

B) Pancreas

C) Thyroid gland

D) Thymus gland

92 / 100

Category: Biology Ch 2 Class 11

he molecule used by most of the animals for long-term energy storage is:

NUMS 2016
Biology
Biological Molecules
Elimination Tool:

A) Glycogen

B) Starch

C) Fat

D) Cholesterol

93 / 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

94 / 100

Category: Biology Ch 3 Class 12

The phytohormones controlling the plant movements are?

NTS 2015 SMBBMC
Biology
Coordination and Control
Elimination Tool:

A) Auxins

B) Gibberellins

C) Abscisic acid

D) Cytokinins

E) All of the above

95 / 100

Category: Biology Ch 11 Class 11

Estimating relative CO2 consumption or O2 release during photosynthesis at different wavelengths of light, is termed as:

NUMS 2019 Reconduct
Biology
Bioenergetics
Elimination Tool:

A) Action spectrum

B) Absorption spectrum

C) Dark reaction

D) Light reaction

96 / 100

Category: Biology

Carbon dioxide fixation can be enhanced by enhancing the efficiency of:

NUMS Mock 3
Biology
Bioenergetics

A) Auxins

B) Ribulose bisphosphate

C) Lactoferrin

D) Agrobacterium

97 / 100

Category: Biology

Q.62 Sum rays are re-radiated from the surface of earth in the form of:

A. Long wave radiation

B. Radio waves

C. Short wave radiation

D. Medium waves

98 / 100

Category: Biology Ch 9 Class 11

Of the following which one is most advanced ?

Anthoceropsida

Bryopsida

Hepaticopsida

None of these

99 / 100

Category: Biology Ch 9 Class 12

A technique in transgenic animals in which desired gene is inserted into the eggs of animal is called:

UHS 2015
Biology
Biotechnology
Elimination Tool:

A) Embryonic Stem Cell mediated Transfer

B) Microinjection

C) Retro-virus mediated gene Transfer

D) Virus vectors

100 / 100

Category: Biology

The table shows the characteristics of the blood in one blood vessel in the body.

Which blood vessel contains blood with these characteristics?

NUMS Mock 1
Biology
Transport

A) Aorta

B) Pulmonary artery

C) Pulmonary vein

D) Vena cava

Your score is

The average score is 61%

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