Biology Test Paper Final Neet (UG) 2020

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

Name Phone Number

Identify the wrong statement with regard to Restriction Enzymes.

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

They are useful in genetic engineering

They cut the strand of DNA at palindromic sites.

Sticky ends can be joined by using DNA ligases

None

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

High concentration of Estrogen

High concentration of Progesterone

Low concentration of FSH

Low concentration of LH

None

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)

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

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

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

None

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) (iv) (iii) (i)

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

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

None

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

Madagascar

Himalayas

Western Ghats of India

Amazon forests

None

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

Insulin

Lectin

Haemoglobin

Collagen

None

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

Defence action

Nutritive value

Growth response

Effect on reproduction

None

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

Primary sludge

Floating debris

Activated sludge

Effluents of primary treatment

None

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)

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

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

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

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

None

10.

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

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

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

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

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

None

11.

The QRS complex in a standard ECG represents:

Repolarisation of auricles

Depolarisation of ventricles

Depolarisation of auricles

Repolarisation of ventricles

None

12.

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)

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

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

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

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

None

13.

Which of the following pairs is of unicellular algae?

Gelidium and Gracilaria

Chlorella and Spirulina

Anabaena and Volvox

Laminaria and Sargassum

None

14.

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

Reorganisation of all cell components takes place.

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

DNA synthesis or replication takes place.

Nuclear Division takes place.

None

15.

Choose the correct pair from the following:

Exonucleases: Make cuts at specific positions within DNA

Polymerases : Break the DNA into fragments

Nucleases : Separate the two strands of DNA

Ligases: Join the two DNA molecules

None

16.

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

ZIFT and IUT

GIFT and ZIFT

ICSI and ZIFT

GIFT and ICSI

None

17.

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

Fibrous roots

Lateral roots

Prop roots

Primary roots

None

18.

Select the correct statement.

Glucagon is associated with hypoglycemia.

Insulin is associated with hyperglycemia.

Insulin acts on pancreatic cells and adipocytes.

Glucocorticoids stimulate gluconeogenesis.

None

19.

The specific palindromic sequence which is recognized by EcoRi is:

5’- GGATCC - 3'

3’ – CCTAGG – 5’

5’ – GAATTC – 3’

3’ – CTTAAG - 5'

5' – GGAACC – 3’

3’ – CCTTGG – 5’

5’ – СТТАAG - 3'

3’ – GAATTC – 5’

None

20.

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

Gibberellic acid

Para-ascorbic acid

Phenolic acid

Abscisic acid

None

21.

Identify the correct statement with reference to human digestive system.

lleum opens into small intestine

Ileum is highly coiled part

Vermiform appendix arises from duodenum

Serosa is the innermost layer of the alimentary canal

None

22.

Goblet cells of alimentary canal are modified from:

Chondrocytes

Compound epithelial cells

Columnar epithelial cells

Squamous epithelial cells

None

23.

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

Ammonia alone

Ammonia and oxygen

Ammonia and hydrogen

Nitrate alone

None

24.

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)

(a) and (b)

(d) and (c)

None

25.

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

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

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

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

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

None

26.

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

1 molecule of 6-C compound

2 molecules of 3-C compound

1 molecule of 3-C compound

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

None

27.

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

PS-I to NADP+

Cytbof complex to PS-1

PS-I to ATP synthase

PS-II to Cytbof complex

None

28.

Meiotic division of the secondary oocyte is completed:

Prior to ovulation

At the time of fusion of a sperm with an ovum

After zygote formation

At the time of copulation

None

29.

Strobili or cones are found in:

Marchantia

Equisetum

Salvinia

Pteris

None

30.

The ovary is half inferior in

Plum

Sunflower

Mustard

Brinjal

None

31.

. Identify the basic amino acid from the following.

Valine

Lysine

Glutamic Acid

Tyrosine

None

32.

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

insects and water

water currents only

wind and water

insects or wind

None

33.

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

Morgan

Sutton

Boveri

Merxlel

None

34.

Embryological support for evolution was disapproved by:

Alfred Wallace

Oparin

Charles Darwin

Karl Ernst von Baer

None

35.

Cuboidal epithelium with brush border of microvilli is found in:

ducts of salivary glands

eustachian tube

lining of intestine

proximal convoluted tubule of nephron

None

36.

Which of the following is correct about viroids?

They have free DNA without protein coat.

They have DNA with protein coat

They have RNA with protein coat.

They have free RNA without protein coat.

None

37.

Ray florets have:

Superior ovary

Hypogynous ovary

Inferior ovary

Half inferior ovary

None

38.

Identify the incorrect statement.

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

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

None

39.

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) only

(a) and (d)

(a), (b) and (c)

None

40.

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)

(a) and (b)

only (d)

None

41.

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

1.5 million

7 million

50 million

20 million

None

42.

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

43.

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

Endoplasmic reticulum

Golgi bodies

Polysomes

Peroxisomes

None

44.

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)

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

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

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

None

45.

Which of the following statements about inclusion bodies is incorrect?

These represent reserve material in cytoplasm.

They lie free in the cytoplasm.

They are not bound by any membrane.

These are involved in ingestion of food particles.

None

46.

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

Uremia and Ketonuria

Uremia and Renal Calculi

Ketonuria and Glycosuria

Renal calculi and Hyperglycaenia

None

47.

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

Trophozoites

Sporozoites

Female gametocytes

Male gametocytes

None

48.

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

Allele ' does not produce any sugar.

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

The gene (1) has three alleles.

A person will have only two of the three alleles.

None

49.

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

Transpiration

Imbibition

Plasmolysis

None

50.

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

Ethidium bromide in UV radiation

Ethidium bromide in infrared radiation

Acetocarmine in UV radiation

Acetocarmine in bright blue light

None

51.

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)

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

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

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

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

None

52.

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

Out crossing

Cross breeding

Mutational breeding

Inbreeding

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)

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

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

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

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

None

54.

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)

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

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

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

None

55.

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

Natality

Sex ratio

Species interaction

Mortality

None

56.

The enzyme enterokinase helps in conversion of:

caseinogen into casein

pepsinogen into pepsin

protein into polypeptides

trypsinogen into trypsin

None

57.

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)

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

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

None

58.

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

Selectable marker

Recognition site

Palindromic sequence

Ori site

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)

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

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

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

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

None

60.

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

Fungal diseases

Plant nematodes

Insect predators

Insect pests

None

61.

Floridean starch has structure similar to:

Amylopectin and glycogen

Mannitol and algin

Starch and cellulose

Laminarin and cellulose

None

62.

Which of the following statements is not correct?

In man insulin is synthesised as a proinsulin.

The proinsulin has an extra peptide called C-peptide.

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

Genetically engineered insulin is produced in E-Coli.

None

63.

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

One

Three

Two

Zero

None

64.

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)

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

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

None

65.

Which of the following would help in prevention of diuresis ?

Reabsorption of Na and water from renal tubules due to aldosterone

Decrease in secretion of renin by JG cells

Atrial natriuretic factor causes vasoconstriction

More water reabsorption undersecretion of ADH due to

None

66.

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

Cytokinin

Gibberellin

Ethylene

Abscisic acid

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.

The first phase of translation is:

Aminoacylation of tRNA

Recognition of DNA molecule

Recognition of an anti-codon

Binding of mRNA to ribosome

None

69.

Identify the wrong statement with reference to transport of oxygen.

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

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

Low pCO₂ in alveoli favours the formation of oxyhaemoglobin.

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

None

70.

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

DNA helicase

RNA polymerase

DNA ligase

DNA polymerase

None

71.

The process of growth is maximum during:

Lag phase

Senescence

Log phase

Dormancy

None

72.

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:

2.5 meters

2.7 meters

2.0 meters

2.2 meters

None

73.

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

G phase

S phase

M phase

None

74.

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)

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

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

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

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

None

75.

Bilaterally symmetrical and acoelomate animals are exemplified by:

Platyhelminthes

Ctenophora

Aschelminthes

Annelida

None

76.

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 stem

Monocotyledonous root

Dicotyledonous stem

Dicotyledonous root

None

77.

Dissolution of the synaptonemal complex occurs during:

Diplotene

Zygotene

Leptotene

Pachytene

None

78.

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

Gross primary productivity is always less than net primary productivity.

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

Gross primary productivity is always more than net primary productivity.

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

None

79.

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)

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

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

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

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

None

80.

Flippers of Penguins and Dolphins are examples of:

Adaptive radiation

Convergent evolution

Natural selection

Industrial melanism

None

81.

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

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

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

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

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

None

82.

Identify the wrong statement with reference to immunity.

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

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

Active immunity is quick and gives full response.

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

None

83.

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

Chalaza

Nucellus

Hilum

Micropyle

None

84.

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

Glycerol, trypsin

Inulin, insulin

Cellulose, lecithin

Chitin, Cholesterol

None

85.

Snow-blindness in Antarctic region is due to

High reflection of light from snow

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

Freezing of fluids in the eye by low temperature

Damage to retina caused by infra-red rays

None

86.

. Montreal protocol was signed in 1987 for control of:

Disposal of e-wastes

Emission of ozone depleting substances

Release of Green House gases

Transport of Genetically modified organisms from one country to another

None

87.

Select the option including all sexually transmitted diseases.

Gonorrhoea, Malaria, Gential herpes

Gonorrhoea, Syphilis, Genital herpes

Cancer, AIDS, Syphilis

AIDS, Malaria, Filaria

None

88.

Select the correct match.

Haemophilia - Y linked

Phenylketonuria - Autosomal dominant trait

Thalassemia - X linked

Sickle cell anaemia - Autosomal recessive trait, chromosome-11

None

89.

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

(b), (c) and (d)

Only (a)

Only (d)

(a) and (c)

None

90.

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

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.

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.

None

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