KCET Sample Paper Biology

Sample Paper

Biology

Q.No. 1 According to Human Genome Project (HGP), the total number of genes in human genome is
estimated at 30,000, the number of genes present on Y-chromosome are

(A) 2898 genes

(B) 231 genes

(C) 242 genes

(D) 2968 genes

Q.No. 2 Accessory ducts of reproductive system of human female include:

(A) Oviduct, uterus & vagina

(B) Oviduct, ovaries & ovarian ligaments

(C) Oviduct, ovaries & mammary glands

(D) Ovaries, uterus & vagina

Q.No. 3 Identify the incorrect statement with reference of Biocontrol agents:

(A) They do not affect non-target pests

(B) They are significant in treating ecologically sensitive area

(C) They help to increase the use of synthetic pesticides

(D) They do not show any negative impact on crop plants

Q.No. 4 Identify the DNA sequence which can be cut using EcoRI.

(A) 3’ACGAATTCAT5’ 5’TACTTAAGCA3’

(B) 5’TGCTTAAGTA3’ 3ATGAATTCGT5’

(C) 5’ACGAATTCAT3’ 3’TGCTTAAGTA5’

(D) 5’TGCTTAAGTA3’ 3’ACGAATTCAT5’

Q.No. 5 The blood cell that secretes histamine, serotonin and heparin is:

(A) Neutrophil

(B) T-lymphocyte

(C) Killer cell

(D) Basophil

Q.No. 6 The technique of bombarding plant cells with high velocity microparticles of gold or tungsten,
coated with DNA, is

(A) Microinjection

(B) Biolistic method

(C) Heat shock method

(D) By disarmed pathogen vector

Q.No. 7 Identify the enzyme that catalyses the step labelled as ‘M’ in the given Schematic representation of

Replication of retrovirus.

(A) DNA ligase

(B) Recombinase

(C) RNA polymerase

(D) Reverse transcriptase

Q.No. 8 A person shows symptoms like Sneezing, Watery eyes, running nose and difficulty in breathing, on
exposure to certain substances in air. Which type of antibody is produced during such condition?

(A) IgA

(B) IgM

(C) IgE

(D) IgG

Q.No. 9 Consider the following statements (i), (ii) and (iii) regarding criteria for essentiality of the nutrients
in plants: (i) The presence of elements is must for plants to complete their life cycle. (ii) The role of the
element can be replaced by another element. (iii) The element must be directly involved in the metabolism of
the plant. Choose the correct statement/s:

(A) (ii) and (iii)

(B) (iii) only

(C) (i) and (ii)

(D) (i) and (iii)

Q.No. 10 Read the statements 1 and statements 2. Choose the correct option: Statement 1 : RNA take place
in all prokaryotic and eukaryotic organisms as a Method of cellular defence. Statement 2 : RNA interference
is a pre- translational process.

(A) Statement-1 incorrect, statement-2 correct.

(B) Statement-1 correct, statement-2 incorrect.

(C) Both statements are correct.

(D) Both statements are incorrect.

Q.No. 11 The nourishing cells in the Seminiferous tubules are

(A) Spermatogonial cells

(B) Sertoli cells

(C) Leydig cells

(D) Follicular cells

Q.No. 12 The average length of hnRNA in humans; is

(A) 3000 bases

(B) 2.4 million bases

(C) 1500 bases

(D) 500 bases

Q.No. 13 Testa and Tegmen of the seed coat represent

(A) Dried Petals

(B) Dried Tepals

(C) Dried Sepals

(D) Dried Integuments

Q.No. 14 Identify the cells represents as P, Q, R and S in the given schematic representation of

spermatogenesis.

(A) P – Secondary Spermatocyte, Q – Primary Spermatocyte, R – Spermatozoa, S - Spermatids

(B) P – Secondary Spermatocyte, Q – Spermatids, R – Spermatozoa, S – Primary Spermatocyte

(C) P – Primary Spermatocyte, Q – Secondary Spermatocyte, R – Spermatids, S – Spermatozoa

(D) P – Spermatozoa, Q – Spermatids, R – Secondary Spermatocyte, S – Primary Spermatocyte

Q.No. 15 An Amphibians and reptiles, the body temeprature changes corresponding to external temperature.
The organisms which show this kind of response is termed as –

(A) Conformers

(B) Thermophiles

(C) Regulators

(D) Partial regulators

Q.No. 16 The hormones of “Fright, Fight and Flight” are

(A) Thyroxin and Oxytocin

(B) Thyroxin and Melatonin

(C) Adrenalin and Nor-adrenalin

(D) Gastrin and Secretin

Q.No. 17 Which of these is not an advantages in Genetically modified crops?

(A) Increases the post harvest losses.

(B) Enhances the nutritional value of food.

(C) Reduces the reliance on chemical pesticides.

(D) Increases efficiency of mineral usage in plants.

Q.No. 18 In the given options, which one cannot propagate by vegetative means ?

(A) A marginal piece of bryophyllum leaf A middle internode

(B) piece of sugarcane

(C) Apiece of potato tuber with eyes

(D) A piece of ginger rhizome

Q.No. 19 In Morgan’s experiment with Drosophila, when yellow bodied white eyed female was crossed with
brown bodied red eyed male and their F1 progeny were intercrossed. What was the percentage of
recombinants in F2 generation?

(A) 37.2%

(B) 1.3%

(C) 98.7%

(D) 62.8%

Q.No. 20 The following graph shows concentration of substrate on enzyme activity :
What does the Y-axis represent ?

(A) Temperature

(B) Velocity of reaction

(C) pH

(D) Pressure

Q.No. 21 Digestion of both starch and proteins is carried out by enzymes of

(A) Gastric juice

(B) Saliva

(C) Bile juice

(D) Pancreatic juice

Q.No. 22 Which one of the following human activity has contributed to deforestation in north-eastern states
of India?

(A) Jhum cultivation

(B) Mono cropping

(C) Industrialisation

(D) Urbanisation

Q.No. 23 Identify the odd one among the following disorders:

(A) Thalassemia

(B) Phenyl Ketonuria

(C) Sickle-cell Anaemia

(D) Haemophilia

Q.No. 24 When pollen grain is shed at the 3-celled stage , name the cells it contains.

(A) 1 vegetative cell and 2 male gametes

(B) 2 vegetative cells and 1 male gamete

(C) 2 generative cells and 1 male gamete

(D) 2 male gametes and 1 generative cell

Q.No. 25 The biomagnification of which pollutant causes a decline in the bird population

(A) Mercury

(B) SO2

(C) DDT

(D) NO2

Q.No. 26 In India the action plans for family planning were initiated in the year:

(A) 1972

(B) 1947

(C) 1951

(D) 1950

Q.No. 27 Choose the possible genotypes responsible for lightest skin colour in human beings.

(A) AABBCC

(B) AaBbCc

(C) aabbcc

(D) AABbCc

Q.No. 28 Climax community is a state of:

(A) non-equilibrium

(B) near equilibrium

(C) pioneer species

(D) changing community

Q.No. 29 Net primary productivity (NPP) in an ecosystem is

(A) GPP - R = NPP

(B) GPP + R= NPP

(C) GPP - NPP = R

(D) R - NPP = GPP

Q.No. 30 Identify the correct combination of crop-variety and insect pests.

(A) Okra - Pusa sawani - Shoot and Fruit borer

(B) Flat bean - Pusa Gaurav - Fruit borer

(C) Brassica - Pusa A-4 - Aphids

(D) Brassica - Pusa sem-3 Jassids

Q.No. 31 The safe method of disposal of e-waste is:

(A) incineration

(B) burning in open field

(C) thrown into water

(D) dumping in forest

Q.No. 32 A mature mRNA consists of 900 bases without any stop codon in between. Calculate the number of
amino acids coded by this mRNA during translation.

(A) 450

(B) 300

(C) 299

(D) 900

Q.No. 33 Among the following statements related to pollens, choose the correct one. Statement I : In 40% of
angiosperms pollen grains are shed at 3-celled stage. Statement II : Intine is made of cellulose and pectin and
it is discontinuous with germ pores.

(A) Both I and II are correct

(B) BothI and II are incorrect

(C) I is correct and II is incorrect

(D) I is incorrect and II is correct

Q.No. 34 Identify the major site of biosynthesis of lipids.

(A) Golgi apparatus

(B) Mitochondria

(C) Smooth endoplasmic reticulum (SER)

(D) Rough endoplasmic reticulum (RER)

Q.No. 35 Which class Of Algae reproduces asexually by non-motile spores and sexually by non-motile
gametes?

(A) Rhodophyceae

(B) Phaeophyceae

(C) Chlorophyceae

(D) Cyanophyceae

Q.No. 36 If E.coli is allowed to grow for 40 minutes in a medium containing N , then the number of
15

14
N /N containing DNA would be:
14

(A) zero

(B) 20

(C) 10

(D) 2

Q.No. 37 In the following diagrammatic representation of a standard ECG the 'T' represents.

(A) Depolarisation Of Atria

(B) Depolarisation of Ventricles

(C) Repolarization Of Atria

(D) Repolarization Of Ventricles

Q.No. 38 In animal breeding, the maximum genetic variations can be achieved through

(A) Crossbreeding

(B) Interspecific hybridization

(C) Outscrossing

(D) Inbreeding

Q.No. 39 In Prokaryotes, the transcription of DNA is initiated with the help of

(A) Termination factor

(B) Sigma factor

(C) Elongation factor

(D) Rho factor

Q.No. 40 In the following reaction, identify X and Y respectively

(A) Water, Acetyl CoA

(B) Acetyl CoA, Pyruvate dehydrogenase

(C) Pyruvate dehydrogenase, Acetyl CoA

(D) Pyruvate dehydrogenase, Oxalo-acetic acid

Q.No. 41 So far 1.5 million species are identified, in which the number of fungi species identified is more
than combined total of:

(A) Algae, lichens, mosses and ferns

(B) Fishes anphibiarß, reptiles aml mammals

(C) Molluscs and crustaceans

(D) Molluscs, fishes and amphibians

Q.No. 42 Match the following Column I with Column II:
Select the code for the correct answer

(A) 1-III 2-I 3-IV 4-II

(B) 1-III 2-IV 3-I 4-II

(C) 1-IV 2-III 3-II 4-I

(D) 1-II 2-I 3-III 4-lV

Q.No. 43 Cells in the quiescent stage (G0)

(A) remain metabolically active

(B) remain metabolically inactive

(C) Show indefinite proliferation

(D) always become cancerous

Q.No. 44 Identify the elements whose deficiency causes both necrosis and chlorosis.

(A) Mg, K

(B) Mo, Ca

(C) Fe, Mn

(D) Cu, Co

Q.No. 45 If a tetraploid plant contains 48 chrormsones in its nucellus, then number of chromosomes in the
egg cell and in a synergid respectively:

(A) 48 and 48

(B) 24 and 24

(C) 24 and 48

(D) 48 and 24

Q.No. 46 Verhulst-Pearl logistic growth is described by the equation dN
= rN [
K−N
] where ‘r’ and ‘K’

dt K

represent

(A) r - intrinsic rate of natural decrease, K — carrying capacity

(B) r - intrinsic rate of natural increase, K — carrying capacity

(C) r - extrinsic rate of natural increase, K — productive capacity

(D) r - extrinsic ‘rate of natural decrease, K — carrying capacity

Q.No. 47 A man was suffering from mental illness like depression and insomnia. Identify the drug which is
normally used as medicine in such cases.

(A) Heroin

(B) Nicotine

(C) Lysergic Acid Diethylamides (LS(D)

(D) Morphine

Q.No. 48 Implantation is influenced by

(A) FSH

(B) LH

(C) Progesteron

(D) Relaxin

Q.No. 49 Match for M and N with species-area relationship shown in the graphic representation below and

choose the correct option.

(A) M→ S = CAZ, N --> log S = log C + Z log A

(B) M → S = CZA, N --> log C = log S + Z log A

(C) M → S = CAZ, N --> log S = log C + A log Z

(D) M → S = AZ C, N -->log ZA = log C + log S

Q.No. 50 dsRNA is used to develop pest resistant tobacco plant by a technique called

(A) Polymerase Chain Reaction (PCR)

(B) RNA interference (RNAi)

(C) Electrophoresis

(D) Insertional Activation

Q.No. 51 In dihybrid cross, when F plants (RrYy) are self hybridised, the ratio of segregation yellow and
1

green in F is :
2

(A) 1:2:1

(B) 3:1

(C) 9:3:3:1

(D) 1:1:1:1

Q.No. 52 In blind spot of the human eye

(A) Only rods are absent.

(B) Both cones and rods are present.

(C) Only cones are absent

(D) Both cones and rods are absent

Q.No. 53 Replacement of which one of the following nucleotides in the HbA gene causes sickle cell anaemia
?

(A) A to U

(B) C to G

(C) U to A

(D) T to A

Q.No. 54 Microbes like Spirulina can be good alternate to teh conventional sources of proteins for human
nutrition, because

(A) they are produced using synthetic fertilisers

(B) they have high fibre content

(C) they give more biomass in less time

(D) their proteins are different from plant proteins

Q.No. 55 The hormones involved in maintaining balance in the human body are:

(A) PTH and TCT

(B) PTH and LTH

(C) TCT and FSH

(D) MSH and ACTH

Q.No. 56 The human protein α -1 antitrypsin is obtained from:

(A) transformed bacteria

(B) transgenic animal

(C) transgenic plant

(D) a plant from Western Ghats

Q.No. 57 During replication of retrovirus

(A) Viral protein is introduced in the host cell.

(B) Viral RNA is introduced into the host cell.

(C) Viral DNA is introduced into the host cell.

(D) Transcriptase enzyme is introduced into the host cell.

Q.No. 58 The number of ATP molecules utilised for the breakdown of one molecule of glucose during
glycolysis is:

(A) 4

(B) 2

(C) 6

(D) 8

Q.No. 59 A transformed bacteria with human gene, fails to produce desired protein. The reason could be:

(A) Human gene may have intron which bacteria cannot process.

(B) Amino acid codons for hunun and bacteria differ.

(C) Human protein is formed but degraded by bacteria.

(D) The bacterial promoter gene cannot induce transcription of human gene.

Q.No. 60 In the given transcription unit, identify the regions I and II respectively.

(A) Promoter and Terminator

(B) Rho factor and Sigma factor

(C) Terminator and Promoter

(D) Operatorand Inhibitor

Answer Sheet
Q.No Answer
Q.No. 1 (B)
Q.No. 2 (A)
Q.No. 3 (C)
Q.No. 4 (C)

Q.No. 5 (D)
Q.No. 6 (B)
Q.No. 7 (C)
Q.No. 8 (C)

Q.No. 9 (D)
Q.No. 10 (A)
Q.No. 11 (B)
Q.No. 12 (A)
Q.No. 13 (D)
Q.No. 14 (C)
Q.No. 15 (A)
Q.No. 16 (C)
Q.No. 17 (A)
Q.No. 18 (B)
Q.No. 19 (B)
Q.No. 20 (B)
Q.No. 21 (D)
Q.No. 22 (A)
Q.No. 23 (D)
Q.No. 24 (A)
Q.No. 25 (C)
Q.No. 26 (C)
Q.No. 27 (C)
Q.No. 28 (B)
Q.No. 29 (A)
Q.No. 30 (A)
Q.No. 31 (A)
Q.No. 32 (C)
Q.No. 33 (C)
Q.No. 34 (C)
Q.No. 35 (A)
Q.No. 36 (A)
Q.No. 37 (D)
Q.No. 38 (B)
Q.No. 39 (B)
Q.No. 40 (C)
Q.No. 41 (B)
Q.No. 42 (A)
(A)

Q.No. 43
Q.No. 44 (A)
Q.No. 45 (B)
Q.No. 46 (B)

Q.No. 47 (C)
Q.No. 48 (C)
Q.No. 49 (A)
Q.No. 50 (B)
Q.No. 51 (B)
Q.No. 52 (D)
Q.No. 53 (A)
Q.No. 54 (C)
Q.No. 55 (A)
Q.No. 56 (B)
Q.No. 57 (B)
Q.No. 58 (B)
Q.No. 59 (A)
Q.No. 60 (C)