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 genetically engineered vaccine is available for which of the following hepatitis virus?

PMC Practice 5
Biology
Biotechnology
Elimination Tool:

A) HBV

B) HAV

C) HCV

D) Options A and B are correct

2 / 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

3 / 100

Category: Biology Ch 10 Class 11

Coelom is a cavity lined by:

NUMS 2016
Biology
Kingdom Animalia
Elimination Tool:

A) Mesoderm

B) Endoderm

D) Ectoderm

C) Epiderm

4 / 100

Category: Biology Ch 2 Class 11

The helical structure of a protein is kept by the formation of hydrogen bond between amino acid molecules which are:

NUMS 2015
Biology
Biological Molecules
Elimination Tool:

A) Adjacent to each other

B) In successive spiral turns

C) Between two different polypeptide chains

D) None of the given options

5 / 100

Category: Biology Ch 1 Class 12

The concentration of Na ions in the body fluids is controlled by the ____ hormone.

NTS 2012
Biology
Homeostasis
Elimination Tool:

A) ADH

B) Parathormone

C) Aldosterone

D) Estrogen

6 / 100

Category: Biology

Pseudopodia are:

NUMS Mock 1
Biology
Support and Movement

A) False feet developed in some unicellular organisms

B) Small hairlike structures present on the unicellular organisms

C) Long, tube like structures coming out of the mouth

D) Suckers which are attached to the walls of intestines

7 / 100

Category: Biology Ch 3 Class 11

The structure of an enzyme is altered by:

Irreversible inhibitor

Reversible inhibitor

Competitive inhibitor

Non-competitive inhibitor

8 / 100

Category: Biology

Q.62 The animals that have features of both mammals and reptiles are?

A. Duckbill platypus

B. Spiny anteater

C. Wolves

D. Both A and B

9 / 100

Category: Biology Ch 6 Class 11

Which of the following is TRUE about the structure of a typical bacterium?

PMC 2020
Biology
Kingdom Prokaryote
Elimination Tool:

A) It has cell wall

B) It has cytoplasm

C) It has genetic material

D) All of the above

10 / 100

Category: Biology Ch 14 Class 11

Antibodies are manufactured in:

PMC 2020
Biology
Transport
Elimination Tool:

A) T Lymphocytes

B) Red Blood Cells

C) Platelets

D) B Lymphocytes

11 / 100

Category: Biology Ch 9 Class 12

In recombinant DNA technology, the copies of recombinant DNA are increased by:

NTS 2018
Biology
Biotechnology
Elimination Tool:

A) Restriction enzyme

B) Ligase

C) Selection of host with rDNA

D) Multiplication of host with rDNA

12 / 100

Category: Biology Ch 5 Class 12

The major sign and symptoms of microcephaly is:

NTS 2010
Biology
Growth and Development
Elimination Tool:

A) Sexual defects

B) Excessive number of toes

C) Mental retardation

D) Small skull in proportion to the normal body size

13 / 100

Category: Biology Ch 2 Class 11

Cell wall is made up of:

NUMS 2016
Biology
Biological Molecules
Elimination Tool:

A) Cellulose

B) Cell

C) Ribosomes

D) Penicillin binding protein

14 / 100

Category: Biology Ch 13 Class 11

Oxygen is transported by combining with ……….. in Hb.

NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:

A) Nitrogen

B) Iron

D) Hydrogen

C) Carbon

15 / 100

Category: Biology Ch 2 Class 11

Which of the following are instant sources of energy in living organisms, like glucose? Their general formula is:

NUMS 2019 Cancelled
Biology
Biological Molecules
Elimination Tool:

A) Cx(H2O)y

B) C6H12O6

C) Cx(H2O)x

D) Cx(HO)y

16 / 100

Category: Biology Ch 9 Class 12

Organisms that have had a foreign gene inserted into them are

Transformed organisms

Transgenic organisms

Transfigured organisms

Recombinant organisms

17 / 100

Category: Biology

Which of the following animals can survive without drinking water?

NUMS Mock 4
Biology
Nutrition

A) Kangaroo rat

B) Pig

C) Kangaroo

D) Camel

18 / 100

Category: Biology Ch 5 Class 12

All of the followings are the effects of red light on plant, EXCEPT:

NTS 2016 SMBBMC
Biology
Growth and Development
Elimination Tool:

A) Causes epicotyl (plumule) hook to unbend

B) Induces increase in leaf area

C) Elongation of internodes is promoted

D) Stimulate flowering in long day plants

19 / 100

Category: Biology Ch 7 Class 12

In which stage of meiotic division centromere divides?

NUMS 2017
Biology
Cell Cycle
Elimination Tool:

A) Anaphase I

B) Anaphase II

C) Metaphase II

D) Both A and B

20 / 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

21 / 100

Category: Biology Ch 3 Class 12

The sense organs of taste in tongue are known as:

NUMS 2014
Biology
Coordination and Control
Elimination Tool:

A) Olfactory receptors

B) Gustatory receptors

C) Cutaneous receptors

D) All of these

22 / 100

Category: Biology Ch 1 Class 12

Thick, waxy & leathery cuticle around leaves is present in

Hydrophytes

Mesophytes

Xerophytes

Halophytes

23 / 100

Category: Biology

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

NUMS Mock 1
Biology
Man and His Environment

A) Herbivores

B) Carnivores

C) Omnivores

D) Detritivores

24 / 100

Category: Biology Ch 11 Class 12

Study of relationship of organisms to their environment is

Ecology

Palaentology

Geology

None of these

25 / 100

Category: Biology Ch 3 Class 12

Deficient production of hormones by adrenal glands results in: .

NTS 2011
Biology
Coordination and Control
Elimination Tool:

A) Cushing's syndrome

B) Addison's disease

C) Diabetes Mellitus

D) Goiter

26 / 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

27 / 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.

If one of Ali’s daughters marries a normal man,what is the probability that one of their children will display symptoms of hemophilia:

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

A) 0%

B) 25%

C) 50%

D) 75%

28 / 100

Category: Biology Ch 2 Class 11

Ribose sugar that is the main part of RNA is a type of _____ sugar.

NUMS 2019 Reconduct
Biology
Biological Molecules
Elimination Tool:

A) Triose

B) Tetrose

C) Pentose

D) Hexose

29 / 100

Category: Biology Ch 13 Class 11

Which one of the following is a genetic disorder in which abnormally thick mucus is produced in the lungs and other parts of the body?

NUMS 2020
Biology
Gaseous Exchange
Elimination Tool:

A) Lung cancer

B) Chronic bronchitis

C) Cystic fibrosis

D) Emphysema

30 / 100

Category: Biology

Lecithin is formed by combining phosphatidic acid with ______:

NUMS Mock 1
Biology
Biological Molecules

A) Serine

B) Choline

C) Inositol

D) Ethanolamine

31 / 100

Category: Biology Ch 8 Class 11

Type of lichen which tightly attaches to rocks is

Parmelia

Fruticose

Foliose

Crustose

32 / 100

Category: Biology Ch 12 Class 11

Carotenoids are related to:

NUMS 2015
Biology
Nutrition
Elimination Tool:

A) Vitamin A

B) Vitamin B

C) Vitamin C

D) Vitamin D

33 / 100

Category: Biology

Q.7 A neuron located in the cential hervous system that projects its axon outside the CNS is called:

A. Motor nerve

B. Sensory nerve

C. Both A and B

D. Mixed nerve

34 / 100

Category: Biology Ch 10 Class 12

Natural selection can amplify or diminish variations that are?

PMC Sample 2
Biology
Evolution
Elimination Tool:

A) Heritable

B) non heritable

C) both a and b

D) acquired

35 / 100

Category: Biology Ch 11 Class 11

During cellular respiration NADH2 produces:

NUMS 2014
Biology
Bioenergetics
Elimination Tool:

A) 2 ATP

B) 3 ATP

C) 4 ATP

D) 5 ATP

36 / 100

Category: Biology

The thickest chamber of the human heart is:

NUMS Mock 4
Biology
Transport

A) Left atrium

B) Right atrium

C) Right ventricle

D) Left ventricle

37 / 100

Category: Biology Ch 2 Class 12

How many metacarpals are present In the hand?

NTS 2013
Biology
Support and Movement
Elimination Tool:

A) 4

B) 3

C) 6

D) 5

38 / 100

Category: Biology Ch 7 Class 12

From each pair of centrioles ________ sets of microtubules originate

39 / 100

Category: Biology Ch 13 Class 11

The most important cause of many of the respiratory disorders is:

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

A) Bacterial infection

B) Pollution

C) Smoking

D) Drinking

40 / 100

Category: Biology Ch 5 Class 12

Fetus is human embryo from the beginning of which of the following?

PMC Sample 2
Biology
Growth and Development
Elimination Tool:

A) 2nd month

B) 3rd month

D) 5th month

C) 4th month

41 / 100

Category: Biology Ch 10 Class 11

The name animal is derived from the word.

Anima

Anemia

Aname

All of these

42 / 100

Category: Biology

Which of these in an aqueous solution of equal concentration has the lowest pH?

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Chloroethanoic acid

B) Ethanoic acid

C) Ethylamine

D) Phenol

43 / 100

Category: Biology Ch 10 Class 11

Which of the following is a freshwater sponge?

NUMS 2016
Biology
Kingdom Animalia
Elimination Tool:

A) Sycon

B) Leucosolenia

C) Euplectella

D) Spongilla

44 / 100

Category: Biology Ch 6 Class 12

Genetic code is a ______ code and out of 64 codons, _____ are nonsense codons.

NUMS 2019 Reconduct
Biology
Chromosomes and DNA
Elimination Tool:

A) Single ; two

B) Single ; three

C) Triplet ; two

D) Triplet ; three

45 / 100

Category: Biology Ch 13 Class 12

Which of the following trophic levels has the largest biomass in ecosystems?

NUMS 2018
Biology
Man and His Environment
Elimination Tool:

A) Decomposers

B) Primary consumer

D) Producers

C) Secondary consumer

46 / 100

Category: Biology

Q.39 Which of the following genetic diseases is caused by mutations in a membrane protein?

A. Alzheimer's disease

B. Parkinson's disease

C. Anemia

D. Hemolytic anemia

47 / 100

Category: Biology Ch 9 Class 12

During gel electrophoresis, the gel used is:

NUMS 2020
Biology
Biotechnology
Elimination Tool:

A) Agar gel

B) Agarose gel

C) Dextran

D) Toluene gel

48 / 100

Category: Biology Ch 10 Class 12

Adaptations that an organism acquires by its own actions are

Heritable

Not heritable

Can be made heritable through some modifications

Both heritable and not heritable

49 / 100

Category: Biology Ch 2 Class 11

All of the following structures are proteinous in nature except:

NUMS 2014
Biology
Biological Molecules
Elimination Tool:

A) Hooves

B) Haemoglobin

C) Enzymes

D) Steroids

50 / 100

Category: Biology Ch 11 Class 12

Which statement is true?

Producers are heterotrophic organisms

Consumers are autotrophic organisms

Fungi and bacteria are decomposers

Consumers release chemical elements as ions

51 / 100

Category: Biology Ch 10 Class 11

Bipinnaria is the larval form of:

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

A) Coelenterate

B) Potychaeta

C) Echinodermata

D) Cestoda

52 / 100

Category: Biology Ch 6 Class 11

If lipopolysaccharides did not appear in the wall of bacteria on staining then it will be known as ________.

UHS 2018
Biology
Kingdom Prokaryote
Elimination Tool:

A) Gram negative

B) Gram positive

C) Capsule

D) Both Gram positive & negative

53 / 100

Category: Biology Ch 6 Class 11

Vibrio cholera is an example of ______ type of bacteria.

NUMS 2017
Biology
Kingdom Prokaryote
Elimination Tool:

A) Cocci

B) Bacilli

C) Spirilla

D) Commas

54 / 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

55 / 100

Category: Biology Ch 7 Class 11

In which of the following growth phases, the number of bacteria increases the most rapidly?

NTS 2018
Biology
Kingdom Protista
Elimination Tool:

A) Lag phase

B) Log phase

C) Stationary phase

D) Death / Decline phase

56 / 100

Category: Biology Ch 10 Class 12

Which factor decides what type of variation should be flourished and passed on to the next generations?

NTS 2019
Biology
Evolution
Elimination Tool:

A) Species

B) Population

C) Survival

D) Environment

57 / 100

Category: Biology Ch 5 Class 11

The social organization of howling monkeys was studied by:

NUMS 2014
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Allen

B) Thorpe

C) Schjeldeup ebbe

D) Carpenter

58 / 100

Category: Biology

Q.56 During cyclic photophosphorylation, electrons are diverted back to:

A. Plastoquinone

B. Cytochrome complex

C. Plastocyanin

D. Ferredoxin

59 / 100

Category: Biology Ch 8 Class 12

In nature, Garden pea is

Self-fertilized

Cross fertilized

Cross pollinated

None of these

60 / 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.

61 / 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:

A) Osmoconformers

B) Osmoregulators

C) Thermoregulators

D) Thermoconformers

62 / 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.

63 / 100

Category: Biology Ch 2 Class 12

Muscle fiber has many _____ and in turns these have many ______.

NUMS 2019 Reconduct
Biology
Support and Movement
Elimination Tool:

A) Myofibrils; sarcomeres

B) Myofibrils; thin filaments

C) Myosin; thin filaments

D) Myosin; sarcomeres

64 / 100

Category: Biology

It is a method for rapid production of a very large number of copies of a particular fragment of DNA:

NUMS Mock 2
Biology
Biotechnology

A) Gel electrophoresis

B) Polymerase chain reaction

C) DNA extraction

D) Recombination

65 / 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

66 / 100

Category: Biology Ch 5 Class 12

Secondary growth is actually

Extension of plant body

Increase in thickness

Production of leaves and flowers

None of these A

67 / 100

Category: Biology Ch 10 Class 12

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

NTS 2013
Biology
Evolution
Elimination Tool:

A) Protists

B) Algae

C) Bacteria

D) Protozoans

68 / 100

Category: Biology Ch 11 Class 11

Where do the light – dependent reactions of photosynthesis occur?

NTS 2016 SMBBMC
Biology
Bioenergetics
Elimination Tool:

A) In the guard cells of the stomata

B) Stroma of chloroplast

C) In the thylakoid membrane of chloroplast

D) Cytoplasm of leaf cell

69 / 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

A) Reproduction

B) Adaptability

C) Mitosis

D) Respiration

70 / 100

Category: Biology

The passageways of the respiratory system have mucous secreting cells called:

NUMS Mock 3
Biology
Gaseous Exchange

A) Tracheal cells

B) Goblet cells

C) Surfactant cells

D) Pleural cells

71 / 100

Category: Biology Ch 3 Class 11

Reversible inhibitors form WEAK linkages with which of the following?

PMC Sample 3
Biology
Enzymes
Elimination Tool:

A) enzyme

B) reactant

C) product

D) substrate

72 / 100

Category: Biology Ch 7 Class 11

All of the following organisms belong to the kingdom protista EXCEPT:

NTS 2012
Biology
Kingdom Protista
Elimination Tool:

A) Ulva

B) Euglena

C) Slime Mold

D) Common Mold

73 / 100

Category: Biology Ch 8 Class 11

Coenocytic hyphae are also known as

Septate

. Perforated hyphae

Aseptate

Uninucleate hyphae

74 / 100

Category: Biology Ch 11 Class 11

3-Phosphoglycerate in the presence of ATP and reduced NADP (from the light-dependent stage) is reduced to:

NUMS 2020
Biology
Bioenergetics
Elimination Tool:

A) Ribulose bisphosphate

B) 6 carbon compound

C) 5 carbon compound

D) 3 carbon compound

75 / 100

Category: Biology Ch 7 Class 12

_______ is the most critical phase of mitosis.

NUMS 2015
Biology
Cell Cycle
Elimination Tool:

A) Prophase

B) Telophase

C) Anaphase

D) Metaphase

76 / 100

Category: Biology Ch 10 Class 11

Archaeopteryx is a connecting link between:

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

A) Amphibians and reptiles

B) Reptiles and birds

C) Birds and mammals

D) None of these

77 / 100

Category: Biology

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

NUMS Mock 4
Biology
Evolution

A) Adaptations

B) Polymorphism

C) Niches

D) Specialization

78 / 100

Category: Biology

Q.38 Testosterone is produce by which of the following?

A. Sertoli cells

B. Germinal epithelial cells

C. Interstitial cells

D. Nurse cells

79 / 100

Category: Biology Ch 14 Class 11

The lymph vessels empty in:

NUMS 2015
Biology
Transport
Elimination Tool:

A) Arteries

B) Veins

C) Capillaries

D) None of the given options

80 / 100

Category: Biology

Q.13 The frequency of allele if it is evolutionary successful is?

A. increased

B. Enzymes

C. no change

D. All of these

81 / 100

Category: Biology Ch 7 Class 12

Exchange of segments between homologous chromosomes is called:

UHS 2012
Biology
Cell Cycle
Elimination Tool:

A) Segregation

B) Independent assortment

C) Crossing over

D) Mutation

82 / 100

Category: Biology

The region of the chromosome or, more specifically, the length of the DNA molecule, which has a particular function is called _______.

NUMS Mock 2
Biology
Chromosomes and DNA

A) Kinetochore

B) Locus

C) Allele

D) Gene

83 / 100

Category: Biology Ch 1 Class 12

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

NUMS 2020
Biology
Homeostasis
Elimination Tool:

A) Na+

B) K+

C) Mg2+

D) Cl-

84 / 100

Category: Biology

Q.6 All of the following are the functions of endoplasmic reticulum except:

A. Nerve impulse conduction

B. Transport of material

C. Mechanical support

D. Synthesis of conjugated molecules

85 / 100

Category: Biology

Q.16 Retroviruses have a special enzyme ‘reverse transcriptase’ which can convert ____________into ___________.

A. DNA to DNA

B. RNA to DNA

C. DNA to RNA

D. RNA to RNA

86 / 100

Category: Biology Ch 3 Class 12

Thyroid gland requires high amount of:

NUMS 2016
Biology
Coordination and Control
Elimination Tool:

A) Phosphate

B) Calcium

C) Iodine

D) Sodium

87 / 100

Category: Biology Ch 5 Class 11

Allium cepa is the scientific name of :

Onion

Amaltas

Potato

Tomato

88 / 100

Category: Biology Ch 7 Class 11

Which of the following is divided by fission?

NTS 2018
Biology
Kingdom Protista
Elimination Tool:

A) Viruses

B) Viroids

C) Bacteria

D) Fungus

89 / 100

Category: Biology Ch 12 Class 11

Which process takes place during the movement of glucose from the body fluid to the blood?

NUMS 2016
Biology
Nutrition
Elimination Tool:

A) Endosmosis

B) Osmosis

C) Active transport

D) Facilitated diffusion

90 / 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

91 / 100

Category: Biology Ch 9 Class 11

The male reproductive parts of the flower are called

UHS 2012
Biology
Kingdom Plantae
Elimination Tool:

A) Gynoecium

B) Calyx

C) Androecium

D) Corolla

92 / 100

Category: Biology Ch 1 Class 12

Urine formation is the result of:

NTS 2015 SMBBMC
Biology
Homeostasis
Elimination Tool:

A) Ultrafiltration

B) Reabsorption

C) Tubular secretion

D) All of the above

93 / 100

Category: Biology Ch 5 Class 11

Mark the one Kingdom having the most conspicuous living organisms?

NTS 2018
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Monera

B) Protista

C) Animalia

D) Plantae

94 / 100

Category: Biology

Which processes are essential in making nitrogen from dead plant material available to growing plants?

ammonification
deamination
nitrification
nitrogen fixation
NUMS Mock 2
Biology
Man and His Enviornment

A) I, II and III only

B) I, II and IV only

C) I, III and IV only

D) II, III and IV only

95 / 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

96 / 100

Category: Biology Ch 3 Class 11

Which one forms the raw material for coenzymes?

Vitamins

Carbohydrates

Proteins

Metals

97 / 100

Category: Biology Ch 7 Class 11

It is the smallest eukaryote:

NUMS 2017
Biology
Kingdom Protista
Elimination Tool:

A) Virus

B) Bacteria

C) Plasmodium

D) Sponge

98 / 100

Category: Biology Ch 2 Class 12

Roots of a plant show

Positive phototropism and negative geotropism.

Negative phototropism and positive geotropism.

Negative tactic movement and positive tropic movement.

Positive geotropism of stem and roots

99 / 100

Category: Biology Ch 7 Class 12

During the G2 phase:

UHS 2019
Biology
Cell Cycle
Elimination Tool:

A) Chromosome number is duplicated

B) The chromosomes are left with only one chromatid

C) Energy is stored for Chromosome movement and mitotic specific proteins(Tubulin) are produced

D) Specific enzymes are synthesized and DNA base units are accumulated

100 / 100

Category: Biology Ch 1 Class 11

In animals coordination is achieved by means of

Respiratory system

Nervous system

Endocrine system

Both b and c

Your score is

The average score is 61%

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