Biology Test Paper Final Neet (UG) 2020

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

Name Phone Number

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)

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

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

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

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

None

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

Transpiration

Imbibition

None

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

Female gametocytes

Sporozoites

Male gametocytes

Trophozoites

None

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

Western Ghats of India

Himalayas

Amazon forests

Madagascar

None

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

Species interaction

Natality

Mortality

Sex ratio

None

Choose the correct pair from the following:

Nucleases : Separate the two strands of DNA

Exonucleases: Make cuts at specific positions within DNA

Polymerases : Break the DNA into fragments

Ligases: Join the two DNA molecules

None

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

Collagen

Lectin

Haemoglobin

Insulin

None

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

Two

Three

Zero

One

None

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

10.

Flippers of Penguins and Dolphins are examples of:

Adaptive radiation

Natural selection

Industrial melanism

Convergent evolution

None

11.

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

wind and water

insects or wind

water currents only

insects and water

None

12.

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

Endoplasmic reticulum

Polysomes

Peroxisomes

Golgi bodies

None

13.

Which of the following statements is correct?

Adenine pairs with thymine through two H-bonds

Adenine pairs with thymine through three H-bonds

Adenine does not pair with thymine

Adenine pairs with thymine through one H-bond

None

14.

Select the option including all sexually transmitted diseases.

Cancer, AIDS, Syphilis

Gonorrhoea, Syphilis, Genital herpes

AIDS, Malaria, Filaria

Gonorrhoea, Malaria, Gential herpes

None

15.

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

Merxlel

Sutton

Morgan

Boveri

None

16.

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), (b) and (c)

(a) and (d)

None

17.

The process of growth is maximum during:

Dormancy

Lag phase

Log phase

Senescence

None

18.

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.

(a) and (b)

(b) and (c)

(d) and (c)

None

19.

Goblet cells of alimentary canal are modified from:

Columnar epithelial cells

Squamous epithelial cells

Compound epithelial cells

Chondrocytes

None

20.

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)

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

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

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

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

None

21.

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)

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

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

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

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

None

22.

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

23.

Identify the incorrect statement.

Sapwood is the innermost secondary xylem and is lighter in colour

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

Heart wood does not conduct water but gives mechanical support

None

24.

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)

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

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

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

None

25.

Which of the following statements is not correct?

The proinsulin has an extra peptide called C-peptide.

Genetically engineered insulin is produced in E-Coli.

In man insulin is synthesised as a proinsulin.

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

None

26.

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

2 molecules of 3-C compound

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

1 molecule of 6-C compound

1 molecule of 3-C compound

None

27.

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

Ammonia and hydrogen

Ammonia and oxygen

Nitrate alone

Ammonia alone

None

28.

The first phase of translation is:

Aminoacylation of tRNA

Binding of mRNA to ribosome

Recognition of DNA molecule

Recognition of an anti-codon

None

29.

The ovary is half inferior in

Sunflower

Plum

Mustard

Brinjal

None

30.

The QRS complex in a standard ECG represents:

Repolarisation of ventricles

Depolarisation of auricles

Repolarisation of auricles

Depolarisation of ventricles

None

31.

The enzyme enterokinase helps in conversion of:

trypsinogen into trypsin

pepsinogen into pepsin

protein into polypeptides

caseinogen into casein

None

32.

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)

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

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

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

None

33.

Ray florets have:

Superior ovary

Inferior ovary

Half inferior ovary

Hypogynous ovary

None

34.

. Montreal protocol was signed in 1987 for control of:

Emission of ozone depleting substances

Transport of Genetically modified organisms from one country to another

Release of Green House gases

Disposal of e-wastes

None

35.

Floridean starch has structure similar to:

Amylopectin and glycogen

Mannitol and algin

Starch and cellulose

Laminarin and cellulose

None

36.

Select the correct statement.

Glucocorticoids stimulate gluconeogenesis.

Insulin is associated with hyperglycemia.

Insulin acts on pancreatic cells and adipocytes.

Glucagon is associated with hypoglycemia.

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)

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

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

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

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

None

38.

Embryological support for evolution was disapproved by:

Charles Darwin

Alfred Wallace

Oparin

Karl Ernst von Baer

None

39.

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) and (b)

(a), (b) and (d)

only (d)

None

40.

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

Cytokinin

Abscisic acid

Ethylene

Gibberellin

None

41.

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

Cytbof complex to PS-1

PS-I to NADP+

PS-I to ATP synthase

PS-II to Cytbof complex

None

42.

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

GIFT and ZIFT

ZIFT and IUT

GIFT and ICSI

ICSI and ZIFT

None

43.

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)

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

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

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

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

None

44.

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

Growth response

Defence action

Nutritive value

Effect on reproduction

None

45.

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

Ori site

Recognition site

Palindromic sequence

Selectable marker

None

46.

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

Chalaza

Nucellus

Hilum

Micropyle

None

47.

Select the correct match.

Haemophilia - Y linked

Phenylketonuria - Autosomal dominant trait

Sickle cell anaemia - Autosomal recessive trait, chromosome-11

Thalassemia - X linked

None

48.

The specific palindromic sequence which is recognized by EcoRi is:

5’ – GAATTC – 3’

3’ – CTTAAG - 5'

5’ – СТТАAG - 3'

3’ – GAATTC – 5’

5' – GGAACC – 3’

3’ – CCTTGG – 5’

5’- GGATCC - 3'

3’ – CCTAGG – 5’

None

49.

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 (d)

(b), (c) and (d)

(a) and (c)

Only (a)

None

50.

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

More water reabsorption undersecretion of ADH due to

Atrial natriuretic factor causes vasoconstriction

None

51.

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

Allele ' does not produce any sugar.

The gene (1) has three alleles.

A person will have only two of the three alleles.

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

None

52.

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

None

53.

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.

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

None

54.

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

Para-ascorbic acid

Abscisic acid

Gibberellic acid

Phenolic acid

None

55.

Which of the following statements about inclusion bodies is incorrect?

They are not bound by any membrane.

These are involved in ingestion of food particles.

These represent reserve material in cytoplasm.

They lie free in the cytoplasm.

None

56.

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

20 million

1.5 million

50 million

7 million

None

57.

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

Prop roots

Lateral roots

Fibrous roots

Primary roots

None

58.

Dissolution of the synaptonemal complex occurs during:

Zygotene

Pachytene

Diplotene

Leptotene

None

59.

Which of the following pairs is of unicellular algae?

Anabaena and Volvox

Gelidium and Gracilaria

Laminaria and Sargassum

Chlorella and Spirulina

None

60.

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

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

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

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

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

None

61.

Identify the wrong statement with reference to immunity.

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

Active immunity is quick and gives full response.

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

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

None

62.

Which of the following is correct about viroids?

They have DNA with protein coat

They have free RNA without protein coat.

They have RNA with protein coat.

They have free DNA without protein coat.

None

63.

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

64.

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

Ethidium bromide in UV radiation

Acetocarmine in UV radiation

Acetocarmine in bright blue light

Ethidium bromide in infrared radiation

None

65.

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

Chitin, Cholesterol

Cellulose, lecithin

Inulin, insulin

Glycerol, trypsin

None

66.

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)

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

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

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

None

67.

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

DNA synthesis or replication takes place.

Nuclear Division 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 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) (i) (ii) (iii)

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

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

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

None

69.

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

70.

Strobili or cones are found in:

Equisetum

Marchantia

Salvinia

Pteris

None

71.

. Identify the basic amino acid from the following.

Lysine

Tyrosine

Glutamic Acid

Valine

None

72.

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)

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

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

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

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

None

73.

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)

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

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

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

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

None

74.

Identify the wrong statement with regard to Restriction Enzymes.

Sticky ends can be joined by using DNA ligases

They are useful in genetic engineering

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

They cut the strand of DNA at palindromic sites.

None

75.

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)

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

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

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

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

None

76.

. 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.

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

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

Gross primary productivity is always more than net primary productivity.

None

77.

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

Ketonuria and Glycosuria

Uremia and Renal Calculi

Uremia and Ketonuria

Renal calculi and Hyperglycaenia

None

78.

Meiotic division of the secondary oocyte is completed:

Prior to ovulation

After zygote formation

At the time of copulation

At the time of fusion of a sperm with an ovum

None

79.

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

Primary sludge

Effluents of primary treatment

Floating debris

Activated sludge

None

80.

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

81.

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

82.

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

Low concentration of LH

High concentration of Estrogen

Low concentration of FSH

High concentration of Progesterone

None

83.

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)

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

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

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

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

None

84.

Snow-blindness in Antarctic region is due to

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

Freezing of fluids in the eye by low temperature

High reflection of light from snow

Damage to retina caused by infra-red rays

None

85.

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

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

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

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

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

None

86.

Identify the wrong statement with reference to transport of oxygen.

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

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

Low pCO₂ in alveoli favours the formation of oxyhaemoglobin.

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

None

87.

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

2.5 meters

2.0 meters

2.2 meters

None

88.

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

DNA ligase

DNA helicase

DNA polymerase

RNA polymerase

None

89.

Cuboidal epithelium with brush border of microvilli is found in:

ducts of salivary glands

proximal convoluted tubule of nephron

lining of intestine

eustachian tube

None

90.

Bilaterally symmetrical and acoelomate animals are exemplified by:

Annelida

Platyhelminthes

Aschelminthes

Ctenophora

None

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