Biology Test Paper Final Neet (UG) 2020

Welcome to your Bilogy Test Paper Final Neet (UG) 2020

Name Phone Number

Match the following diseases with the causative organism and select the correct option.

Column - I	Column - II
(a) Typhoid	(i) Wuchereria
(b) Pneumonia	(ii) Plasmodium
(c) Filariasis	(iii) Salmonella
(d) Malaria	(iv) Haemophilus

(a) (b) (c) (d)

(ii) (i) (iii) (iv)

(iii) (iv) (i) (ii)

(i) (iii) (ii) (iv)

(iv) (i) (ii) (iii)

None

Which of the following is not an inhibitory substance governing seed dormancy?

Phenolic acid

Abscisic acid

Gibberellic acid

Para-ascorbic acid

None

The number of substrate level phosphorylations in one turn of citric acid cycle is:

Three

Zero

One

Two

None

Match the following columns and select the correct option.

Column -1	Column-II
(a) 6-15 pairs of gill slits	(i) Trygon
(b) Heterocercal caudal fin	(ii) Cyclostomes
(c) Air Bladder	(iii) Chondrichthyes
(d) Poison sting	(iv) Osteichthyes

(a) (b) (c) (d)

(iv) (ii) (iii) (i)

(i) (iv) (iii) (ii)

(ii) (iii) (iv) (i)

(iii) (iv) (i) (ii)

None

The Transverse section of a plant shows following anatomical features

(a) Large number of scattered vascular bundles surrounded by bundle sheath.

(b) Large conspicuous parenchymatous ground tissue.

(d) Phloem parenchyma absent.

Identify the category of plant and its part:-

Dicotyledonous stem

Dicotyledonous root

Monocotyledonous stem

Monocotyledonous root

None

. Identify the basic amino acid from the following.

Tyrosine

Valine

Lysine

Glutamic Acid

None

Experimental verification of the chromosomal theory of inheritance was done by:

Morgan

Merxlel

Boveri

Sutton

None

Identify the incorrect statement.

Heart wood does not conduct water but gives mechanical support

Due to deposition of tannins, resins, oils etc.. heart wood is dark in colour

Sapwood is involved in conduction of water and minerals from root to leaf

Sapwood is the innermost secondary xylem and is lighter in colour

None

The body of the ovule is fused within the funicle at:

Hilum

Nucellus

Micropyle

Chalaza

None

10.

The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plarits is/are:

Ammonia and hydrogen

Ammonia alone

Nitrate alone

Ammonia and oxygen

None

11.

Identify the correct statement with regard to G₁ phase (Gap 1) of interphase.

Nuclear Division takes place.

DNA synthesis or replication takes place.

Cell is metabolically active, grows but does not replicate its DNA.

Reorganisation of all cell components takes place.

None

12.

Match the following columns and select the correct option

Column -I

Column - II

(a) Organ of Corti

(1) Connects middle ear and pharynx

(b) Cochlea

(ii) Coiled part of the labyrinth

(iii) Attached to the oval window

(d) Stapes

(iv) Located on the basilar membrane

(a) (b) (c) (d)

(iii) (i) (iv) (ii)

(ii) (iii) (i) (iv)

(iv) (ii) (i) (iii)

(i) (ii) (iv) (iii)

None

13.

Match the following:

(a) Inhibitor of catalytic activity	(i) Ricin
(b) Possess peptide bonds	(ii) Malonate
(c) Cell wall material in fungi	(iii) Chitin
(d) Secondary metabolite	(iv) Collagen

Choose the correct option from the following:

(a) (b) (c) (d)

(ii) (iv) (iii) (i)

(iii) (i) (iv) (ii)

(ii) (iii) (i) (iv)

(iii) (iv) (iii) (i)

None

14.

Snow-blindness in Antarctic region is due to

Freezing of fluids in the eye by low temperature

Inflammation of cornea due to high dose of UV-B radiation

High reflection of light from snow

Damage to retina caused by infra-red rays

None

15.

Ray florets have:

Inferior ovary

Half inferior ovary

Hypogynous ovary

Superior ovary

None

16.

Match the following columns and select the correct option:

Column-l

Column-II

(a) Pituitary gland

(i) Grave's disease

(b) Thyroid gland

(ii) Diabetes mellitus

(iii) Diabetes insipidus

(d) Pancreas

(iv) Addision's disease

(a) (b) (c) (d)

(iv) (iii) (i) (ii)

(iii) (ii) (i) (iv)

(ii) (i) (iv) (iii)

(iii) (i) (iv) (iii)

None

17.

Identify the wrong statement with reference to the gene T that controls ABO blood groups.

A person will have only two of the three alleles.

Allele ' does not produce any sugar.

The gene (1) has three alleles.

When IAand IB are present together, they express same type of sugar.

None

18.

Name the enzyme that facilitates opening of DNA helix during transcription.

DNA helicase

DNA polymerase

DNA ligase

RNA polymerase

None

19.

Match the following columns and select the correct option.

Column-I

Column-II

(a) Bt cotton

(i) Gene therapy

(b) Adenosine

deaminase

deficiency

(ii) Cellular defence

(iii) Detection of HIV

Infection

(d) PCR

(iv) Bacillus thuringiensis

(a) (b) (c) (d)

(iii) (ii) (i) (iv)

(i) (ii) (iii) (iv)

(ii) (iii) (iv) (i)

(iv) (i) (ii) (iii)

None

20.

Cuboidal epithelium with brush border of microvilli is found in:

proximal convoluted tubule of nephron

lining of intestine

eustachian tube

ducts of salivary glands

None

21.

By which method was a new breed 'Hisardale of sheep formed by using Bikaneri ewes and Marino rams?

Inbreeding

Out crossing

Mutational breeding

Cross breeding

None

22.

The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of:

1 molecule of 6-C compound

1 molecule of 4-C compound and 1 molecule of 2-C compound.

2 molecules of 3-C compound

1 molecule of 3-C compound

None

23.

Floridean starch has structure similar to:

Amylopectin and glycogen

Starch and cellulose

Laminarin and cellulose

Mannitol and algin

None

24.

Embryological support for evolution was disapproved by:

Charles Darwin

Oparin

Alfred Wallace

Karl Ernst von Baer

None

25.

Match the organism with its use in biotechnology.

(a) Bacillus thuringiensis

(i) Cloning vector

(b) Thermus aquaticus

(ii) Construction of first rDNA molecule

(iii) DNA polymerase

(d) Salmonella typhimurium

(iv) Cry proteins

Select the correct option from the following

(a) (b) (c) (d)

(ii) (iv) (iii) (i)

(iv) (iii) (i) (ii)

(iii) (iv) (i) (ii)

(iii) (ii) (iv) (i)

None

26.

Which of the following would help in prevention of diuresis ?

Reabsorption of Na and water from renal tubules due to aldosterone

More water reabsorption undersecretion of ADH due to

Atrial natriuretic factor causes vasoconstriction

Decrease in secretion of renin by JG cells

None

27.

Match the following columns and select the correct option

Column - I	Column - II
(a) Floating Ribs	(i) Located between second and seventh ribs
(b) Acromion	(ii) Head of the Humerus
(c) Scapula	(iii) Clavicle
(d) Glenoid Cavity	(iv) Do not connect with the sternum

(a) (b) (c) (d)

(iii) (ii) (iv) (i)

(ii) (iv) (i) (ii)

(iv) (iii) (i) (ii)

(i) (iii) (ii) (iv)

None

28.

Select the correct events that occur during Inspiration.

(a) Contraction of diaphragm

(b) Contraction of external inter-costal muscles

(d) Intra pulmonary pressure increases

(a), (b) and (d)

only (d)

(a) and (b)

None

29.

Match the following columns and select the correct option

Column -I

Column - II

(a) Organ of Corti

(1) Connects middle ear and pharynx

(b) Cochlea

(ii) Coiled part of the labyrinth

(iii) Attached to the oval window

(d) Stapes

(iv) Located on the basilar membrane

(a) (b) (c) (d)

(ii) (iii) (i) (iv)

(i) (ii) (iv) (iii)

(iv) (ii) (i) (iii)

(iii) (i) (iv) (ii)

None

30.

The QRS complex in a standard ECG represents:

Repolarisation of ventricles

Repolarisation of auricles

Depolarisation of ventricles

Depolarisation of auricles

None

31.

The roots that originate from the base of the stem are:

Primary roots

Lateral roots

Fibrous roots

Prop roots

None

32.

Identify the wrong statement with reference to immunity.

Active immunity is quick and gives full response.

Foetus receives some antibodies from mother, it is an example for passive immunity.

When exposed to antigen (living or dead) antibodies are produced in the host's body. It is called "Active immunity".

When ready-made antobodies are directly given, it is called "Passive immunity".

None

33.

Match the following columns and select the correct option

Column - I	Column - II
(a) Gregarious, polyphagous pest	(i) Asterias
(b) Adult with radial symmetry and larva with bilateral	(ii) Scorpion
(c) Book lungs	(iii)Ctenoplana
(d) Bioluminescence	(iv) Locusta

(iv) (i) (ii) (iii)

(ii) (i) (iii) (iv)

(iii) (ii) (i) (iii)

(i) (iii) (ii) (iV)

None

34.

Select the correct statement.

Insulin acts on pancreatic cells and adipocytes.

Glucagon is associated with hypoglycemia.

Insulin is associated with hyperglycemia.

Glucocorticoids stimulate gluconeogenesis.

None

35.

Match the following columns and select the correct option.

Column - I	Column - II
(a) Clostridium butylicum	(1) Cyclosporin - A
(b) Trichoderma polysporum	(ii) Butyric Acid
(c) Monascus purpureus	(iii) Citric Acid
(d) Aspergillus niger	(iv) Blood cholesterol lowering agent

(a) (b) (c) (d)

(i) (ii) (iv) (iii)

(ii) (i) (iv) (iii)

(iii) (iv) (ii) (I)

(iv) (iii) (ii) (i)

None

36.

The infectious stage of Plasmodium that enters the human body is:

Sporozoites

Male gametocytes

Female gametocytes

Trophozoites

None

37.

Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to

Plant nematodes

Fungal diseases

Insect pests

Insect predators

None

38.

Which of the following is correct about viroids?

They have DNA with protein coat

They have free RNA without protein coat.

They have free DNA without protein coat.

They have RNA with protein coat.

None

39.

In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?

ICSI and ZIFT

ZIFT and IUT

GIFT and ZIFT

GIFT and ICSI

None

40.

In light reaction, plastoquinone facilitates the transfer of electrons from:

PS-I to NADP+

PS-I to ATP synthase

PS-II to Cytbof complex

Cytbof complex to PS-1

None

41.

The ovary is half inferior in

Mustard

Sunflower

Brinjal

Plum

None

42.

Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?

Low concentration of FSH

High concentration of Estrogen

High concentration of Progesterone

Low concentration of LH

None

43.

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

Activated sludge

Primary sludge

Effluents of primary treatment

Floating debris

None

44.

The process reponsible for facilitating loss of water in liquid form from the tip of grasss blades at night and in early moming is:

Root pressure

Plasmolysis

Imbibition

Transpiration

None

45.

Match the trophic levels with their correct species examples in grassland ecosystem.

(a) Fourth trophic level	(i) Crow
(b) Second trophic level	(ii) Vulture
(c) First trophic level	(iii) Rabbit
(d) Third trophic level	(iv) Grass

Slect the correct option
(a) (b) (c) (d)

(iv) (iii) (ii) (i)

(ii) (iii) (iv) (i)

(i) (ii) (iii) (iv)

(iii) (ii) (i) (iv)

None

46.

Which of the following statements is not correct?

The functional insulin has A and B chains linked together by hydrogen bonds.

Genetically engineered insulin is produced in E-Coli.

The proinsulin has an extra peptide called C-peptide.

In man insulin is synthesised as a proinsulin.

None

47.

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (Go). This process occurs at the end of:

G phase

S phase

M phase

G₁ phase

None

48.

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Abscisic acid

Cytokinin

Gibberellin

Ethylene

None

49.

Which of the following is the most abundant protein in the animals?

Insulin

Lectin

Haemoglobin

Collagen

None

50.

Choose the correct pair from the following:

Nucleases : Separate the two strands of DNA

Exonucleases: Make cuts at specific positions within DNA

Ligases: Join the two DNA molecules

Polymerases : Break the DNA into fragments

None

51.

Goblet cells of alimentary canal are modified from:

Squamous epithelial cells

Columnar epithelial cells

Chondrocytes

Compound epithelial cells

None

52.

Which of the following statements is correct?

Adenine pairs with thymine through one H-bond

Adenine pairs with thymine through two H-bonds

Adenine pairs with thymine through three H-bonds

Adenine does not pair with thymine

None

53.

The process of growth is maximum during:

Lag phase

Log phase

Senescence

Dormancy

None

54.

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:

Nutritive value

Effect on reproduction

Growth response

Defence action

None

55.

Strobili or cones are found in:

Pteris

Marchantia

Equisetum

Salvinia

None

56.

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?

Polysomes

Peroxisomes

Endoplasmic reticulum

Golgi bodies

None

57.

Identify the wrong statement with regard to Restriction Enzymes.

Sticky ends can be joined by using DNA ligases

Each restriction enzyme functions by inspecting the length of a DNA sequence.

They cut the strand of DNA at palindromic sites.

They are useful in genetic engineering

None

58.

Match the following with respect to meiosis:

(a) Zygotene	(i) Terminalization
(b) Pachytene	(ii) Chiasmata
(c) Diplotene	(iii) Crossing over
(d) Diakinesis	(iv) Synapsis

Select the correct option from the following:

(a) (b) (c) (d)

(iv) (iii) (ii) (i)

(iii) (iv) (i) (ii)

(i) (ii) (iv) (iii)

(ii) (iv) (iii) (i)

None

59.

Match the following columns and select the correct option

Column-I	Column-II
(a) Placenta	(i) Androgens
(b) Zona pellucida	(ii) Human Chorionic Gonadotropin (hCG)
(c) Bulbo urethral glands	(iii) Layer of the ovum
Leydig cells	(iv) Lubrication of the Penis

(a) (b) (c) (d)

(ii) (iii) (iv) (i)

(iii) (ii) (iv) (i)

(iv) (iii) (i) (ii)

(i) (iv) (ii) (iii)

None

60.

Select the option including all sexually transmitted diseases.

Gonorrhoea, Malaria, Gential herpes

Cancer, AIDS, Syphilis

AIDS, Malaria, Filaria

Gonorrhoea, Syphilis, Genital herpes

None

61.

Identify the substances having glycosidic bond and peptide bond, respectively in their structure:

Chitin, Cholesterol

Inulin, insulin

Cellulose, lecithin

Glycerol, trypsin

None

62.

If the head of cockroach is removed, it may live for few days because:

the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.

the head holds a 1/3 of a nervous system while the rest is situated along the dorsal part of its body.

system the cockroach does not have nervous.

the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.

None

63.

The sequence that controls the copy number of the linked DNA in the vector, is termed

Palindromic sequence

Selectable marker

Ori site

Recognition site

None

64.

Which of the following statements about inclusion bodies is incorrect?

These are involved in ingestion of food particles.

These represent reserve material in cytoplasm.

They lie free in the cytoplasm.

They are not bound by any membrane.

None

65.

The specific palindromic sequence which is recognized by EcoRi is:

5' – GGAACC – 3’

3’ – CCTTGG – 5’

5’- GGATCC - 3'

3’ – CCTAGG – 5’

5’ – GAATTC – 3’

3’ – CTTAAG - 5'

5’ – СТТАAG - 3'

3’ – GAATTC – 5’

None

66.

the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 x 10⁹ bp, then the length of the DNA is approximately:

2.0 meters

2.5 meters

2.7 meters

2.2 meters

None

67.

How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?

None

68.

Identify the correct statement with reference to human digestive system.

Ileum is highly coiled part

Serosa is the innermost layer of the alimentary canal

lleum opens into small intestine

Vermiform appendix arises from duodenum

None

69.

Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?

(a) Darwin's Finches of Galapagos islands

(b) Herbicide resistant weeds.

(d) Man-created breeds of domesticated animals like dogs

(a) and (c)

Only (d)

(b), (c) and (d)

Only (a)

None

70.

Flippers of Penguins and Dolphins are examples of:

Adaptive radiation

Convergent evolution

Industrial melanism

Natural selection

None

71.

Dissolution of the synaptonemal complex occurs during:

Zygotene

Pachytene

Leptotene

Diplotene

None

72.

Presence of which of the following conditions in urine are indicative of Diabetes Mellitus?

Uremia and Renal Calculi

Ketonuria and Glycosuria

Uremia and Ketonuria

Renal calculi and Hyperglycaenia

None

73.

According to Robert May, the global species diversity is about:

1.5 million

20 million

7 million

50 million

None

74.

In water hyacinth and water lily, pollination takes place by:

water currents only

insects and water

insects or wind

wind and water

None

75.

From his experiments, S.L.. Miller produced amino acids by mixing the following in a closed flask:

CH₄ , H₂ , NH₃ and water vapor at 800°C

CH₃ , H₂, NH₃ and water vapor at 600°C

CH_{3 ,}H_{2 ,}NH₄ and water vapor at 800°C

CH₄ , H₂ , NH₃ and water vapor at 600°C

None

76.

Match the following columns and select the correct option.

Column - I	Column. II
(a) Eosinophils	(i) Immune response
(b) Basophils	(ii) Phagocytosis
(c) Neutrophils	(iii) Release histaminase, destructive enzymes
(d) Lymphocytes	(iv) Release granules containing histamine

(i) (ii) (iv) (iii)

(iv) (i) (ii) (iii)

(iii) (iv) (ii) (i)

(ii) (i) (iii) (iv)

None

77.

Match the following concerning essential elements and their functions in plants:

(a) Iron

(i) Photolysis of water

(b) Zinc

(ii) Pollen germination

(iii) Required for chlorophyll biosynthesis

(d) Manganese

(iv) IAA biosynthesis

Select the correct option
(a) (b) (c) (d)

(iv) (iii) (ii) (i)

(iii) (iv) (ii) (i)

(ii) (i) (iV) (iii)

(iv) (i) (ii) (iii)

None

78.

In gel electrophoresis, separated DNA fragments can be visualized with the help of:

Acetocarmine in UV radiation

Ethidium bromide in UV radiation

Acetocarmine in bright blue light

Ethidium bromide in infrared radiation

None

79.

Bilaterally symmetrical and acoelomate animals are exemplified by:

Aschelminthes

Annelida

Platyhelminthes

Ctenophora

None

80.

Select the correct match.

Phenylketonuria - Autosomal dominant trait

Thalassemia - X linked

Haemophilia - Y linked

Sickle cell anaemia - Autosomal recessive trait, chromosome-11

None

81.

The enzyme enterokinase helps in conversion of:

protein into polypeptides

pepsinogen into pepsin

trypsinogen into trypsin

caseinogen into casein

None

82.

Which of the following is not an atribute of a population?

Mortality

Natality

Species interaction

Sex ratio

None

83.

Which of the following regions of the globe exhibits highest species diversity?

Madagascar

Amazon forests

Western Ghats of India

Himalayas

None

84.

Identify the wrong statement with reference to transport of oxygen.

Binding of oxygen with haemoglobin is mainly related to partial pressure of O₂

Low pCO₂ in alveoli favours the formation of oxyhaemoglobin.

Higher H ⁺ conc. in alveoli favours the formation of oxyhaemoglobin.

Partial pressure of CO₂ can interfere with O₂ binding with haemoglobin.

None

85.

The plant parts which consist of two generations one within the other:

(a) Pollen grains inside the anther

(b) Germinated pollen grain with two male gametes

(d) Embryo sac inside the ovule

(a), (b) and (c)

(a) only

(a) and (d)

None

86.

. In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?

There is no relationship between Gross primary productivity and Net primary productivity.

Gross primary productivity is always more than net primary productivity.

Gross primary productivity is always less than net primary productivity.

Gross primary productivity and Net primary productivity are one and same.

None

87.

Which of the following pairs is of unicellular algae?

Anabaena and Volvox

Laminaria and Sargassum

Gelidium and Gracilaria

Chlorella and Spirulina

None

88.

Which of the following statements are true for the phylum-Chordata?

(a) In Urochordata notochord extends from head to tail and it is present throughout their life.

(b) In Vertebrata notochord is present during the embryonic period only.

(d) Chordata is divided into 3 subphyla Hemichordata, Tunicata and Cephalochordata.

(b) and (c)

(d) and (c)

(a) and (b)

None

89.

The first phase of translation is:

Recognition of DNA molecule

Binding of mRNA to ribosome

Aminoacylation of tRNA

Recognition of an anti-codon

None

90.

Meiotic division of the secondary oocyte is completed:

After zygote formation

At the time of fusion of a sperm with an ovum

At the time of copulation

Prior to ovulation

None

91.

. Montreal protocol was signed in 1987 for control of:

Transport of Genetically modified organisms from one country to another

Release of Green House gases

Emission of ozone depleting substances

Disposal of e-wastes

None

1 out of 19

Time's up