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 13 Class 11

Functional units of lungs are called

Alveoli

Air sacs

Parabronchi

None of these

2 / 100

Category: Biology

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

NUMS Mock 1
Biology
Nutrition

A) Parotid

B) Submandibular

C) Sublingual

D) None of the given options are correct

3 / 100

Category: Biology Ch 13 Class 12

The animals that feed on organic debris from decomposing plants and animals are called:

NUMS 2018
Biology
Man and His Environment
Elimination Tool:

A) Herbivores

B) Carnivores

C) Omnivores

D) Detritivores

4 / 100

Category: Biology Ch 6 Class 12

The total of all the alleles in a population is called a:

NUMS 2014
Biology
Chromosomes and DNA
Elimination Tool:

A) Genetic drift

B) Genotype

C) Gene pool

D) Gene mutation

5 / 100

Category: Biology

Q.59 NADH produced during glycolysis and Krebs cycle will oxidized by:

A. Coenzyme ‘Q’

B. Cytochrome ‘c’

C. Cytochrome ‘b’

D. Cytochrome ‘a’

6 / 100

Category: Biology Ch 3 Class 12

The correct option about spinal nerves is:

NUMS 2020
Biology
Coordination and Control
Elimination Tool:

A) 33 pairs

B) Mostly mixed nerves

C) Dorsal root contains sensory neurons

D) Ventral root contains motor neurons

E) C and D both

7 / 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:

A) Competitive inhibitor

B) Non-competitive inhibitor

C) Reversible inhibitor

D) Irreversible inhibitor

8 / 100

Category: Biology Ch 12 Class 12

Ecosystem of Shogran is

Coniferous alpine

Boreal

temperate deciduous

Grassland

9 / 100

Category: Biology Ch 13 Class 12

Total area of the world under cultivation is

11%

21%

31%

10 / 100

Category: Biology Ch 7 Class 12

Synthesis of microtubules increases in:

UHS 2018
Biology
Cell Cycle
Elimination Tool:

A) M phase

B) S phase

C) G1 phase

D) G2 phase

11 / 100

Category: Biology

Many scientists believe that one of the following is evolutionary origin(s) of animals, plants and fungi?

NUMS Mock 1
Biology
Evolution

A) Protists

B) Algae

C) Bacteria

D) Protozoans

12 / 100

Category: Biology Ch 14 Class 11

Identify the incorrect statement from the following:

NTS 2010
Biology
Transport
Elimination Tool:

A) Apical growth increases the length of stems and roots.

B) Xylem is situated on the outer side of the cambium ring and the phloem on the inner side.

C) Secondary growth increases the diameter of stems and roots.

D) The cells in the elongation phase don't divide.

13 / 100

Category: Biology Ch 9 Class 12

The deficiency of which of the following cause severe combined immunodeficiency

PMC Sample 3
Biology
Biotechnology
Elimination Tool:

A) hypoxanthine-guanine transferase

B) xanthine oxidase

C) PRPP synthatase

D) adeninosine deaminase

14 / 100

Category: Biology

Q.33 Food in plants is transported in the form of:

A. Monosaccharide

B. Polysaccharide

C. Disaccharide

D. Oligosaccharide

15 / 100

Category: Biology Ch 2 Class 12

Scapula is the bone of the:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

A) Skull

B) Pelvic girdle

D) Vertebral column

C) Pectoral girdle

16 / 100

Category: Biology Ch 9 Class 11

Which one of the following types of cell are found in secondary xylem of angiosperms?

NTS 2015 DUHS and JSMU
Biology
Kingdom Plantae
Elimination Tool:

A) Tracheids parenchyma fibres collenchyma but no vessels

B) Vessels tracheids parenchyma collenchyma but no fibres

C) Vessels tracheids fibres collenchyma but no parenchyma

D) Vessels tracheids fibres parenchyma but no collenchyma

17 / 100

Category: Biology Ch 8 Class 11

Which of the following endoparasites of humans does show viviparity?

NTS 2018
Biology
Kingdom Fungi
Elimination Tool:

A) Trichinella spiralis

B) Ascaris lumbricoides

C) Ancylostoma duodenale

D) Enterobius vermicularis

18 / 100

Category: Biology Ch 3 Class 12

Normal resting membrane potential of a neuron is

50 mv

60 mv

70 mv

80 mv

19 / 100

Category: Biology

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

A. Liquid medium

B. Protection

C. Nourishment

D. All of these

20 / 100

Category: Biology Ch 10 Class 12

Analogous organs show

Convergent evolution

Divergent evolution

Straight evolution

Zig-zag evolution

21 / 100

Category: Biology Ch 8 Class 12

Phenotype for both TT and Tt is tall, so the allele T is known as:

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

A) Dominant

B) Recessive

C) Homozygous

D) Heterozygous

22 / 100

Category: Biology Ch 10 Class 12

Modification in the organization of the basic pentadactyl limb structure found in vertebrates provides good evidence for the principle of:

NUMS 2020
Biology
Evolution
Elimination Tool:

A) Adaptive radiation

B) Convergent evolution

C) Genetic drift

D) Inheritance of acquired characters

23 / 100

Category: Biology Ch 10 Class 12

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

NTS 2019
Biology
Evolution
Elimination Tool:

A) Giraffe

B) Galapagos finches

C) Snake

D) All of the above

24 / 100

Category: Biology

Q37 The muscle contraction depends on:

A. Nerve impulse

B. Energy

C. Calcium

D. All of these

25 / 100

Category: Biology Ch 14 Class 11

Choose the correct pathway for the flow of blood:

NUMS 2020
Biology
Transport
Elimination Tool:

A) Arterioles → metarterioles → capillaries → thoroughfare channels

B) Arterioles → thoroughfare channel → metarterioles → capillaries

C) Thoroughfare channel → arterioles → capillaries → metarterioles

D) Metarterioles → arterioles → thoroughfare channels → capillaries

26 / 100

Category: Biology

Q.65 Which one of the following is the attribute of Lamarckism?

A. Natural selection

B. Inheritance of acquired characteristics

C. Struggle for existence

D. Production of more individuals

27 / 100

Category: Biology Ch 11 Class 12

Secondary succession starts from A.

A bar rock sand

Clear glacial pool

From remains of previous ecosystem

Fire

28 / 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

29 / 100

Category: Biology Ch 4 Class 11

DNA is found in which of the following structures?

NUMS 2016
Biology
Cell Structure and Function
Elimination Tool:

A) Golgi complex

B) Lysosomes

C) Mitochondria

D) Ribosomes

30 / 100

Category: Biology

Q.58 Acording to the law of independent assortment, what is the possible number of combinations that chromosomes can assort to independently in the gamete?

A. 16,777,216

B. 2,048

C. 4,194,304

D. 8.388.608

31 / 100

Category: Biology

Identify the incorrect statement about Charles Darwin’s theory:

NUMS Mock 1
Biology
Evoloution

B) There is always a tendency of over reproduction in a species.

C) Vast gradual changes result in the origin of a new species.

D) Favorable variations survive and unfavorable will be exterminated.

E) Intra-specific competition occurs between different species and interspecific competition occurs among the individuals in a species.

32 / 100

Category: Biology Ch 3 Class 12

Which of the following statement about neuron is incorrect?

They not only conduct impulses but also generate them.

They are not the only cellular component of nervous system.

They may show limited regenerative capabilities.

Like all the living cell, when they mature and divide to form similar cells.

33 / 100

Category: Biology Ch 3 Class 11

If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation:

Saturation

Denaturation

Composition

Inhibition

34 / 100

Category: Biology Ch 3 Class 12

Nissl’s granules are present in which part of the neuron?

Axoplasm

Myelin sheath.

Dendrite

Soma

35 / 100

Category: Biology

Q3 These animals show radial symmetry.

A. Chordates

B. Annelids

C. Cnidarian

D Round worms

36 / 100

Category: Biology Ch 5 Class 11

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

They can move

They lack cell wall

They do not have chlorophyll

Both a and b

37 / 100

Category: Biology

Q.61 These are properties of lipids_________________

A. Insoluble in water and soluble in fat solvent.

B. High energy content

C. Structural component of cell membrane

D. All of these

38 / 100

Category: Biology Ch 2 Class 11

Which of the following carbohydrate is tasteless?

Monosaccharide

Oligosaccharide

Polysaccharide

None of these

39 / 100

Category: Biology Ch 6 Class 11

Which of the following has a chain arrangement?

Streptobacillus

Streptococci

Staphylococci

Both A and B

40 / 100

Category: Biology Ch 9 Class 11

Hornwarts are included in sub-class

Anthoceropsida

Bryopsida

Hepaticopsida

Psilopsida

41 / 100

Category: Biology Ch 11 Class 12

Study of a single population’s relationship to its environment is called

Ecology

Synecology

Autecology

Niche

42 / 100

Category: Biology Ch 12 Class 11

Magnesium is present in which of the following?

Cytochromes

ATP

Chlorophyll

Haemoglobin

43 / 100

Category: Biology

Muscular tube that passes through pharynx and joins stomach is:

NUMS Mock 1
Biology
Nutrition

A) Trachea

B) NG tube

C) Nerve canal

D) Esophagus

44 / 100

Category: Biology

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

NUMS Mock 1
Biology
Enzymes

A) Holoenzyme

B) Apoenzyme

C) Coenzyme

D) Zymoenzyme

45 / 100

Category: Biology Ch 4 Class 12

Which of the following is correct in humans?

NUMS 2015
Biology
Reproduction
Elimination Tool:

A) Both sperm and egg contain yolk

B) All genetic information comes from sperm

C) Sperm contains little cytoplasm

D) Fertilization commonly occurs in the uterus

46 / 100

Category: Biology Ch 9 Class 11

Prosopis glandulosa is the botanical name of _______.

NTS 2016 SMBBMC
Biology
Kingdom Plantae
Elimination Tool:

A) Chhui mui

B) Kikar

C) Bauble

D) Devi

47 / 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

48 / 100

Category: Biology Ch 14 Class 11

Identify the only cells in leaf epidermis, which are NOT connected to other cells by plasmodesmata and are involved in photosynthesis.

NUMS 2019 Reconduct
Biology
Transport
Elimination Tool:

A) Epidermal cells

B) Spongy mesophyll cells

C) Guard cells

D) Palisade mesophyll cells

49 / 100

Category: Biology Ch 3 Class 11

Enzymes work by which of the following?

PMC Practice 1
Biology
Enzymes
Elimination Tool:

A) Increasing the activation energy

B) Reducing the activation energy

C) Making exergonic reactions endergonic

D) Making endergonic reactions exergonic

50 / 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

51 / 100

Category: Biology Ch 2 Class 12

Dermal and denticle scales of fishes are called:

NUMS 2015
Biology
Support and Movement
Elimination Tool:

A) Placoid scales

B) Ganoid scales

C) Ctenoid scales

D) Cycloid scales

52 / 100

Category: Biology Ch 3 Class 11

During feedback inhibition, which of the following structural part of enzyme is involved?

NUMS 2020
Biology
Enzymes
Elimination Tool:

A) Active site

B) Binding site

C) Catalytic site

D) Allosteric site

53 / 100

Category: Biology Ch 3 Class 11

Identify the wrong statements.

(a) The substrate binds to active site of enzyme and not fitting into active site

(b) The binding of substrate induces the enzyme to alter its shape

(d) The enzyme releases the products of the reaction and runs through catalytic cycle once again

NUMS 2019 Reconduct
Biology
Enzymes
Elimination Tool:

A) A, C

B) B, D

C) B, C

D) A, D

54 / 100

Category: Biology

An example of competitive inhibition of an enzyme is the inhibition of;

NUMS Mock 2
Biology
Enzymes

A) Succinic dehydrogenase by malonic acid

B) Cytochrome oxidase by cyanide

C) Hexokinase by glucose

D) Carbonic anhydrase by carbon dioxide

55 / 100

Category: Biology

Q.6 Outbreeding increases which of the following?

A. Homozygosity

B. Heterozygosity

C. Gene linkage

D Gene pool

56 / 100

Category: Biology Ch 2 Class 11

In an isotonic solution there would be:

NTS 2016 SMBBMC
Biology
Biological Molecules
Elimination Tool:

A) No net movement of water

B) Net movement of water into the cell

C) Net movement of water out of the cell

D) Bursting of the cell

57 / 100

Category: Biology Ch 6 Class 11

Cell wall is only absent in the following group of bacteria;

PMC Practice 6
Biology
Kingdom Prokaryote
Elimination Tool:

A) Staphylococci

B) Pseudomunas

C) Diplococcus pneumonia

D) Mycoplasmas

58 / 100

Category: Biology Ch 13 Class 11

Gaseous exchange through the skin is known as ______ respiration.

Cuticular

Cutaneous

Skin

Pulmonary

59 / 100

Category: Biology Ch 11 Class 12

Abiotic components include

Atmosphere

Hydrosphere

Lithosphere

All of these

60 / 100

Category: Biology Ch 9 Class 11

Bryophtes are called amphiabians of plant world because

Bryophytes like amphibian ancestors are one of the most primitive organisms in this world.

Bryophytes like amphibian live in damp shady places and close to water body.

Amphibians have close relation with bryophytes in their habitat.

All of these

61 / 100

Category: Biology Ch 11 Class 11

In electron transport chain, ATP synthesis takes place when electrons move from:

PMC 2020
Biology
Bioenergetics
Elimination Tool:

A) Primary Electron Acceptor (PEA) to Plastoquinone (Pq)

B) Plastoquinone (Pq) to cytochromes

C) Cytochrome to Plastocyanin (Pc)

D) Plastocyanin (Pc) to Photosystem I (PS I)

62 / 100

Category: Biology Ch 11 Class 11

Which is the correct order of energy transfer from assessory pigments to main photosynthetic pigment?

. Carotenoids ? Chlorophyll a ? Chlorophyll b.

Chlorophyll b ? Carotenoids ? Chlorophyll a.

. Carotenoids ? Chlorophyll b ? Chlorophyll a.

Chlorophyll a ? Chlorophyll b ? Carotenoids.

63 / 100

Category: Biology Ch 1 Class 12

Deamination in the liver initially produces:

NTS 2010
Biology
Homeostasis
Elimination Tool:

A) Ammonia

B) Arginine

C) Ornithine

D) Urea

64 / 100

Category: Biology Ch 13 Class 11

The function of respiratory passage, Cilia is to keep the airways clear of:

NTS 2019
Biology
Gaseous Exchange
Elimination Tool:

A) Carbon dioxide

B) Oxygen

C) Dust

D) Carbon Monoxide

65 / 100

Category: Biology Ch 8 Class 12

If a heterozygous individual shows the complete effect of both alleles, the type of inheritance would be

Complete dominance

Non dominance

Incomplete dominance

Co-Dominance

66 / 100

Category: Biology Ch 4 Class 12

In which organism males are haploid?

PMC Sample 1
Biology
Reproduction
Elimination Tool:

A) Aphids

B) mosquito

C) butterfly

D) honey bee

67 / 100

Category: Biology Ch 6 Class 12

Mutations can occur in:

NUMS 2016
Biology
Chromosomes and DNA
Elimination Tool:

A) DNA

B) Protein

C) RNA

D) A and C

68 / 100

Category: Biology Ch 11 Class 11

The main process that occurs in the dark reaction in photosynthesis is:

NTS 2010
Biology
Bioenergetics
Elimination Tool:

A) That water is split.

B) Light energy is converted into chemical energy.

C) That glucose is oxidized.

D) That carbon-dioxide is fixed.

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:

A) Mollusca

B) Echinodermata

C) Annelida

D) Arthropoda

70 / 100

Category: Biology Ch 5 Class 11

Amoeba belongs to which kingdom:

Prokaryotae

Plantae

Monera

Protista

71 / 100

Category: Biology

Q43 The animals in which there are separate male and female individuals are called?

A. Unisexual

B. bisexual

C. Asexual

D. hermaphrodite

72 / 100

Category: Biology Ch 8 Class 11

Which of the following component is found in the cell wall of fungi?

UHS 2012
Biology
Kingdom Fungi
Elimination Tool:

A) Cellulose

B) Chitin

C) Proteins

D) Glycerol

73 / 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

74 / 100

Category: Biology Ch 5 Class 12

Amniotic fluid in human embryo protects it from:

NUMS 2014
Biology
Growth and Development
Elimination Tool:

A) Degeneration

C) Encasement

B) Jerks

D) None of these

75 / 100

Category: Biology Ch 11 Class 11

FADH2 is produced during which step of Krebs cycle?

NUMS 2015
Biology
Bioenergetics
Elimination Tool:

A) When Isocitrate is converted into alpha – ketoglutarate

B) When alpha – Ketogluterate is converted into Succinate

C) When Succinate is converted into Fumarate

D) When Fumarate is converted into Maltose

76 / 100

Category: Biology Ch 8 Class 11

Mycorrhizae are found in about ______ vascular plants

90%

95%

98%

96%

77 / 100

Category: Biology Ch 14 Class 11

Humoral immunity is carried by a special group of cells called:

NTS 2017
Biology
Transport
Elimination Tool:

A) B-cells

B) Killer cells

C) Helper cells

D) Null cells

78 / 100

Category: Biology

The dark reactions of photosynthesis are characterized by:

NUMS Mock 1
Biology
Bioenergetics

A) Synthesis of ATP, O2 and NADH

B) Utilization of ATP, CO2 and NADPH

C) Electron transfer from NADPH to RuBP

D) Carbon dioxide transfer from RuBP to glucose

79 / 100

Category: Biology Ch 1 Class 12

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

NUMS 2020
Biology
Homeostasis
Elimination Tool:

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

80 / 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

81 / 100

Category: Biology Ch 13 Class 12

Study of environmental relations is called:

NUMS 2018
Biology
Man and His Environment
Elimination Tool:

A) Physiology

B) Pulmonology

C) Morphology

D) Ecology

82 / 100

Category: Biology Ch 6 Class 11

Which one of the following sets includes the bacterial diseases?

NUMS 2014
Biology
Kingdom Prokaryote
Elimination Tool:

A) Cholera, typhoid, mumps

B) Tetanus, tuberculosis, measles

C) Malaria, mumps, poliomyelitis

D) Diphtheria, leprosy, plague

83 / 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

84 / 100

Category: Biology

Q.40 Which statement is incorrect:

A. Syphilis is caused by Treponema pallidum

B. Genital herpes produces genital soreness and ulcers

C. Syphilis affects bones, eyes and CNS

D. Gonorrhea is a viral infection

85 / 100

Category: Biology Ch 8 Class 12

The trait “Kernel colour in corn” in controlled by how many pairs of genes

One pair

Two pairs

Three pairs

Many pairs

86 / 100

Category: Biology Ch 13 Class 11

Of the following, which one is better respiratory medium.

Air

Water

Soil

None of these

87 / 100

Category: Biology Ch 12 Class 11

_____ is activated to ______ by enterokinase / enteropeptidase enzyme secreted the lining of duodenum:

NUMS 2019 Cancelled
Biology
Nutrition
Elimination Tool:

A) Pepsinogen, pepsin

B) Trypsinogen, trypsin

C) Pepsinogen, trypsin

D) Chymotrypsinogen, chymotrypsin

88 / 100

Category: Biology

Q.61 Which of the following is a compensation point?

B. Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants

C. Rate of photosynthesis increases, so do the O2 production, with a net release oxygen coupled with the uptake of CO2

D. Rate of respiration becomes more than rate of photosynthesis. 16 Net yield of H-O in Photosynthesis is

89 / 100

Category: Biology Ch 2 Class 12

Which vertebrae together are called pelvic vertebrae?

NUMS 2020
Biology
Support and Movement
Elimination Tool:

A) Coccygeal and lumbar

B) Sacral and lumbar

C) Sacral and coccygeal

D) Sacral and thoracic

90 / 100

Category: Biology

Q.10 Mating between relatives is called which of the following?

A. Ex breeding

B. Breeding

C. Inbreeding

D. Outbreeding

91 / 100

Category: Biology Ch 1 Class 12

Which of the following fishes excrete large volume of diluted urine?

Bony Marine fishes

Fresh water fishes

Both depending upon the surrounding water

None of these

92 / 100

Category: Biology

Unpaired facial bones are:

NUMS Mock 3
Biology
Support and Movement

A) Maxilla, Zygomatic

B) Palatine, Inferior concha

C) Nasal, Lacrimal

D) Mandible, Vomer

93 / 100

Category: Biology Ch 1 Class 12

Reabsorption of calcium is triggered by:

NUMS 2019 Reconduct
Biology
Homeostasis
Elimination Tool:

A) Aldosterone

B) Parathormone

C) Antidiuretic

D) Vasopressin

94 / 100

Category: Biology Ch 10 Class 11

In mosquitoes, the plasmodium is found in?

NTS 2015 SMBBMC
Biology
Kingdom Animalia
Elimination Tool:

A) Salivary glands

B) Wings

C) Blood

D) Both Options A and B are correct

95 / 100

Category: Biology Ch 1 Class 12

Excretory system, consisting of protonephridia tubes, are present in phylum:

NUMS 2020
Biology
Homeostasis
Elimination Tool:

A) Porifera

B) Annelida

C) Platyhelminthes

D) Cnidaria

96 / 100

Category: Biology Ch 5 Class 12

The best function of coelom is described as:

PMC Practice 2
Biology
Growth and Development
Elimination Tool:

A) To increase the size of the animals

B) To help in the functioning of the reproductive system

C) To provide space for the development of organs and systems

D) All of these options are correct

97 / 100

Category: Biology

Which of the following RNA sequences would be transcribed from the DNA sequence ATGGCTAGGAC?

NUMS Mock 4
Biology
Chromosomes and DNA

A) TACGGATCCTG

B) UAGCGAUCCUG

C) AUGCCUAGGAC

D) UACCGAUCCUG

98 / 100

Category: Biology Ch 3 Class 11

Lock and Key model was proposed by

Emil Fischer

Koshland

Robin Williams

Rudolph Virchow

99 / 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

100 / 100

Category: Biology

Q.17 Teichoic acids are the characters of:

A. Gram Positive bacteria

B. Mycoplasma

C. Gram Negative bacteria

D. Archaeobacteria

Your score is

The average score is 61%

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