Biology Test Paper Final Neet (UG) 2020

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

Name Phone Number

. Montreal protocol was signed in 1987 for control of:

Release of Green House gases

Disposal of e-wastes

Emission of ozone depleting substances

Transport of Genetically modified organisms from one country to another

None

Meiotic division of the secondary oocyte is completed:

At the time of fusion of a sperm with an ovum

After zygote formation

At the time of copulation

Prior to ovulation

None

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)

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

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

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

None

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

2 molecules of 3-C compound

1 molecule of 6-C compound

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

1 molecule of 3-C compound

None

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

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

Merxlel

Morgan

Sutton

Boveri

None

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

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

A person will have only two of the three alleles.

The gene (1) has three alleles.

Allele ' does not produce any sugar.

None

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

Ethidium bromide in infrared radiation

Acetocarmine in UV radiation

Acetocarmine in bright blue light

Ethidium bromide in UV radiation

None

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

Renal calculi and Hyperglycaenia

Uremia and Renal Calculi

Ketonuria and Glycosuria

Uremia and Ketonuria

None

10.

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)

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

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

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

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

None

11.

The enzyme enterokinase helps in conversion of:

trypsinogen into trypsin

pepsinogen into pepsin

caseinogen into casein

protein into polypeptides

None

12.

Embryological support for evolution was disapproved by:

Karl Ernst von Baer

Alfred Wallace

Oparin

Charles Darwin

None

13.

Which of the following pairs is of unicellular algae?

Laminaria and Sargassum

Chlorella and Spirulina

Anabaena and Volvox

Gelidium and Gracilaria

None

14.

Dissolution of the synaptonemal complex occurs during:

Diplotene

Leptotene

Pachytene

Zygotene

None

15.

Snow-blindness in Antarctic region is due to

High reflection of light from snow

Freezing of fluids in the eye by low temperature

Damage to retina caused by infra-red rays

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

None

16.

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

Zero

One

Three

Two

None

17.

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

Prop roots

Primary roots

Lateral roots

Fibrous roots

None

18.

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

Madagascar

Amazon forests

Western Ghats of India

Himalayas

None

19.

The first phase of translation is:

Binding of mRNA to ribosome

Aminoacylation of tRNA

Recognition of an anti-codon

Recognition of DNA molecule

None

20.

The specific palindromic sequence which is recognized by EcoRi is:

5’- GGATCC - 3'

3’ – CCTAGG – 5’

5' – GGAACC – 3’

3’ – CCTTGG – 5’

5’ – СТТАAG - 3'

3’ – GAATTC – 5’

5’ – GAATTC – 3’

3’ – CTTAAG - 5'

None

21.

Select the correct match.

Phenylketonuria - Autosomal dominant trait

Sickle cell anaemia - Autosomal recessive trait, chromosome-11

Thalassemia - X linked

Haemophilia - Y linked

None

22.

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

Transpiration

Plasmolysis

Imbibition

Root pressure

None

23.

Cuboidal epithelium with brush border of microvilli is found in:

lining of intestine

ducts of salivary glands

proximal convoluted tubule of nephron

eustachian tube

None

24.

Which of the following would help in prevention of diuresis ?

More water reabsorption undersecretion of ADH due to

Decrease in secretion of renin by JG cells

Atrial natriuretic factor causes vasoconstriction

Reabsorption of Na and water from renal tubules due to aldosterone

None

25.

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

insects and water

water currents only

insects or wind

wind and water

None

26.

Floridean starch has structure similar to:

Mannitol and algin

Starch and cellulose

Amylopectin and glycogen

Laminarin and cellulose

None

27.

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:

G₁ phase

S phase

G phase

M phase

None

28.

Goblet cells of alimentary canal are modified from:

Chondrocytes

Columnar epithelial cells

Compound epithelial cells

Squamous epithelial cells

None

29.

Which of the following statements about inclusion bodies is incorrect?

They lie free in the cytoplasm.

These represent reserve material in cytoplasm.

They are not bound by any membrane.

These are involved in ingestion of food particles.

None

30.

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

Low concentration of LH

Low concentration of FSH

High concentration of Estrogen

High concentration of Progesterone

None

31.

The QRS complex in a standard ECG represents:

Repolarisation of auricles

Repolarisation of ventricles

Depolarisation of auricles

Depolarisation of ventricles

None

32.

Which of the following statements is correct?

Adenine does not pair with thymine

Adenine pairs with thymine through two H-bonds

Adenine pairs with thymine through three H-bonds

Adenine pairs with thymine through one H-bond

None

33.

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

Only (a)

Only (d)

(a) and (c)

(b), (c) and (d)

None

34.

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

Phenolic acid

Gibberellic acid

Abscisic acid

Para-ascorbic acid

None

35.

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

Natality

Species interaction

Mortality

Sex ratio

None

36.

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

37.

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) (iii) (i) (iv)

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

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

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

None

38.

Identify the wrong statement with reference to transport of oxygen.

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.

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

None

39.

Flippers of Penguins and Dolphins are examples of:

Industrial melanism

Natural selection

Adaptive radiation

Convergent evolution

None

40.

Identify the incorrect statement.

Sapwood is the innermost secondary xylem and is lighter in colour

Heart wood does not conduct water but gives mechanical support

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

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

None

41.

The process of growth is maximum during:

Log phase

Senescence

Dormancy

Lag phase

None

42.

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

Chitin, Cholesterol

Glycerol, trypsin

Cellulose, lecithin

Inulin, insulin

None

43.

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)

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

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

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

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

None

44.

Ray florets have:

Inferior ovary

Half inferior ovary

Hypogynous ovary

Superior ovary

None

45.

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

Ethylene

Gibberellin

Cytokinin

None

46.

Select the correct events that occur during Inspiration.

(a) Contraction of diaphragm

(b) Contraction of external inter-costal muscles

(d) Intra pulmonary pressure increases

only (d)

(a), (b) and (d)

(a) and (b)

None

47.

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

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

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

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

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

None

48.

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

None

49.

Which of the following statements is not correct?

Genetically engineered insulin is produced in E-Coli.

The proinsulin has an extra peptide called C-peptide.

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

In man insulin is synthesised as a proinsulin.

None

50.

Identify the correct statement with reference to human digestive system.

Vermiform appendix arises from duodenum

Ileum is highly coiled part

Serosa is the innermost layer of the alimentary canal

lleum opens into small intestine

None

51.

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

PS-I to ATP synthase

PS-I to NADP+

PS-II to Cytbof complex

Cytbof complex to PS-1

None

52.

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

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

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

None

53.

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)

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

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

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

None

54.

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

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

Gross primary productivity is always less than net primary productivity.

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

Gross primary productivity is always more than net primary productivity.

None

55.

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

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

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

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

system the cockroach does not have nervous.

None

56.

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)

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

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

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

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

None

57.

Identify the wrong statement with reference to immunity.

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

Active immunity is quick and gives full response.

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

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

None

58.

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

Lectin

Insulin

Haemoglobin

Collagen

None

59.

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)

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

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

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

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

None

60.

Which of the following is correct about viroids?

They have free DNA without protein coat.

They have DNA with protein coat

They have free RNA without protein coat.

They have RNA with protein coat.

None

61.

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

Male gametocytes

Trophozoites

Female gametocytes

Sporozoites

None

62.

Identify the wrong statement with regard to Restriction Enzymes.

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

Sticky ends can be joined by using DNA ligases

They are useful in genetic engineering

They cut the strand of DNA at palindromic sites.

None

63.

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)

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

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

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

None

64.

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

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

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

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

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

None

65.

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)

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

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

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

None

66.

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) and (d)

(a) only

(a), (b) and (c)

None

67.

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

Nuclear Division takes place.

DNA synthesis or replication takes place.

Reorganisation of all cell components takes place.

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

None

68.

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)

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

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

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

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

None

69.

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

20 million

7 million

50 million

1.5 million

None

70.

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:-

Monocotyledonous root

Dicotyledonous root

Dicotyledonous stem

Monocotyledonous stem

None

71.

Bilaterally symmetrical and acoelomate animals are exemplified by:

Ctenophora

Annelida

Aschelminthes

Platyhelminthes

None

72.

Strobili or cones are found in:

Salvinia

Pteris

Marchantia

Equisetum

None

73.

. Identify the basic amino acid from the following.

Valine

Lysine

Tyrosine

Glutamic Acid

None

74.

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

Ammonia and oxygen

Ammonia alone

Ammonia and hydrogen

Nitrate alone

None

75.

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

Polysomes

Peroxisomes

Endoplasmic reticulum

Golgi bodies

None

76.

The ovary is half inferior in

Plum

Brinjal

Mustard

Sunflower

None

77.

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

Fungal diseases

Plant nematodes

Insect pests

Insect predators

None

78.

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:

2.7 meters

2.0 meters

2.2 meters

2.5 meters

None

79.

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

Recognition site

Ori site

Palindromic sequence

Selectable marker

None

80.

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)

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

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

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

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

None

81.

Choose the correct pair from the following:

Polymerases : Break the DNA into fragments

Nucleases : Separate the two strands of DNA

Ligases: Join the two DNA molecules

Exonucleases: Make cuts at specific positions within DNA

None

82.

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)

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

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

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

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

None

83.

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)

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

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

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

None

84.

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

Floating debris

Primary sludge

Effluents of primary treatment

Activated sludge

None

85.

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)

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

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

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

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

None

86.

Select the correct statement.

Glucocorticoids stimulate gluconeogenesis.

Insulin acts on pancreatic cells and adipocytes.

Glucagon is associated with hypoglycemia.

Insulin is associated with hyperglycemia.

None

87.

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

Micropyle

Hilum

Nucellus

Chalaza

None

88.

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

Out crossing

Mutational breeding

Inbreeding

Cross breeding

None

89.

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

DNA polymerase

DNA helicase

RNA polymerase

DNA ligase

None

90.

Select the option including all sexually transmitted diseases.

Gonorrhoea, Malaria, Gential herpes

AIDS, Malaria, Filaria

Cancer, AIDS, Syphilis

Gonorrhoea, Syphilis, Genital herpes

None

91.

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

Defence action

Effect on reproduction

Growth response

Nutritive value

None

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