KCET BIOLOGY 2014

Version Code: D-2

1. Which of the following harmones also produces anti-inflammatory reactions in man and suppresses the
immune response in addition to its primary functions?
(1) Thyrocalcitonin (2) Cortisol (3) Erythropoietin (4) Thymosin
Ans (2)
2. Match the microbial products listed under column-I with the related microbes given under column-II;
choose the appropriate option from the given choices
Column I Column II
(A) Citric acid (p) Methanobacterium
(B) Cyclosporin A (q) Monascus purpureus
(C) Statin (r) Aspergillus niger
(D) Gobar gas (s) Trichoderma polysporum
(t) Clostridium butylicum
(1) A-q, B-s, C-t, D-r (2) A-r, B-s, C-q, D-p (3) A-r, B-s, C-q, D-t (4) A-t, B-q, C-s, D-r
Ans (2)
3. Marchantia is considered as a heterothallic plant because it is
(1) Monoecious (2) Heterogametic (3) Dioecious (4) Bisexual
Ans (3)
4. Identify the set of characteristics related to plants belonging to family Fabaceae from the follwoing
(1) Papilionaceous corolla, axile placentation and leguminuos fruit
(2) Actinomorphic flower, syncarpus ovary and marginal placentation
(3) Vexillary aestivation of corolla, diadelphous stamens and monocarpellary, unilocular ovary
(4) Persistent calyx, epipetalous stamens and leguminous fruit
Ans (3)
5. One of the follwoing statements is incorrect with reference to biodiversity. Identify it.
(1) The richest reservoirs of animal and plant life (species richness) with few or no threatened species are
called biodiversity hotspots
(2) If the successful conditions are localized or remain only for a short duration, an organism either
migrates or suspends itself.
(3) Low atmospheric pressure in higher altitudes results in altitude sickness
(4) Mammals from colder climates have shorter ears and limbs to minimize heat loss
Ans (1)
6. In castor and maize plants,
(1) male and female flowers are borne by different plants
(2) autogamy is prevented but not geitonogamy
(3) the anthers and stigma are placed at different positions to encourage cross pollination
(4) both autogamy and geitonogamy are prevented
Ans (2)
7. In garden pea, round shape of seeds is dominant over wrinkled shape. A pea plant heterozygous for
round shape of seed is selfed and 160 0 seeds produced during the cross are subsequently germinated.
How many seedlings would have the parental phenotype?
(1) 400 (2) 1600 (3) 1200 (4) 800
Ans (3)

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8. Which of the following events would occur in Lac-operon of E coli when the growth medium has high
concentration of lactose?
(1) The repressor protein attaches to the promoter sequence and derepresses the operator
(2) The structural genes fail to produce polycistronic RNA
(3) The inducer molecule binds to repressor protein and RNA polymerase binds to promoter sequence
(4) The repressor protein binds to RNA polymerase and prevents translation
Ans (3)
9. The mature infective stages of malarial parasite which are transferred from mosquito to man are
(1) Trophozoites (2) sporozoites (3) Gametocytes (4) Merozoites
Ans (2)
10. One of the following refers to Allens rule
(1) An organism can move from a stressful habitat to a more hospitable area and return when the
stressful period is over
(2) If the stressful conditions are localized or remain only for a short duration, an organism either
migrates or suspends itself
(3) Low atmospheric pressure in higher altitudes results in altitude sickness.
(4) Mammals from colder climates have shorter ears and limbs to minimize heat loss.
Ans (4)
11. Identify the DNA segment which is not a palindromic sequence.
(1) 5 GGATCC 3 (2) 5 GAATTC 3
3 GGTACC 5 5 CTTAAG 4
(3) 5 GCGGCCGC 3 (4) 5 CCCGGC 3
3 CGCCGGCG 5 3 GGGCCC 5
Ans (1)
12. During somatic hybridization plants,
(1) the cell walls and the lamella are digested before fusing the cells
(2) somaclones are produced in large numbers
(3) crop plants with higher levels of vitamins, proteins and minerals are hybridised
(4) the apical meristems are cultured to get virus-free plants
Ans (1)
13. Statement A: The secreation of collaterial gland forms the egg case in cockraoch.
Statement B: The development in cockroach is hemimetabolous
(1) Statement A is correct and statement B is wrong
(2) Both the statement A and B are correct and B is the reason for A
(3) Statement B is correct and statement A is wrong
(4) Both the statement A and B are correct and B is not the reason for A.
Ans (4)
14. If a plant produces flowers when exposed only to alternating periods of 5 hours light and 3 hours dark in
a 24-hour cycle, then the pland should be a
(1) Short-long day plant (2) Short day plant
(3) Day neutral plant (4) Long day plant
Ans (4)

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15. If there was no carbon dioxide in the earths atmosphere, the temperature of the earths surface would be
(1) less than the present level
(2) same as the present level
(3) dependent on the oxygen content in the atmosphere
(4) more than the present level
Ans (1)
16. One of the following is incorrect about cancer cells
(1) They exhibit mass proliferation
(2) They exhibit the property of contact inhibitation
(3) They are produced when cellular oncogenes of normal cells are activated
(4) They are metastatic
Ans (2)
17. The centrosome duplicates during the
(1) G2-phase of cell cycle (2) S-phase of cell cycle
(3) Prophase of cell cycle (4) G1-phase of cell cycle
Ans (3)
18. Match the items listed under column-I with those given under column-II; choose the appropriate option
from the given choices
Column I Column II
(A) Residual volume (RV) (P) 400 ml 4600 ml
(B) Inspiratory Reserve Volume (IRV) (Q) 1100 ml 1200 ml
(C) Vital Capacity (VC) (R) 1000 ml 1100 ml
(D) Expiratory Reserve Volume (ERV) (S) 3000 ml 3500 ml
(E) Inspiratory Capacity (IC) (T) 2500 ml 0000 ml

A B C D E
(1) T Q S R P
(2) Q R S T P
(3) Q T P R S
(4) R T P Q S
Ans (3)
19. Which of the following statement is correct?
(1) The core of cilium or flagellum is the basal body
(2) Elaioplasts store starch whereas aleuroplasts store proteins
(3) Membranous extensions into the cytoplasm in cyanobacateria which contain pigments are called
chromatophores
(4) Acrocentric chromosomes have only one arm.
Ans (3)
20. Sickle cell anamia is caused to the substitution of
(1) Valine at teh 6th position of beta globin chain by glutamine
(2) Valine at the 6th position of alpha globin chain by glutamic acid
(3) Glycine at the 6th position of alpha group chain by glutamic acid
(4) Glutamic acid at the 6th position of beta group chain by valine
Ans (4)
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21. Statement A : The primary transcript produced in eurokytes is translated without undergoing any
modification or processing
Statement B: The hnRNA in humans has exons and introns
(1) Statement B is correct and statement A is wrong (2) Both the statement A and B are correct
(3) Statement A is correct and statement B is wrong (4) Both the statement A and B are wrong
Ans (1)
22. Knee joint is an example for
(1) Pivot joint (2) Ball and socket joint (3) Gliding joint (4) Hinge joint
Ans (4)
23. Carefully read the following reactions carried out by nitrogen fixing bacteria. Identify the statement
about these equations which is not true
2 NH3 + 3O2 2 NO2 + 2H+ + 2H2O (A)

2NO2 O 2 2NO3 (B)
(1) Both the steps (A) and (B) can be called nitrification
(2) Steps (A) is carried out by Nitrosomanas or Nitrococcus
(3) Both the steps occur only in photoautotrophs
(4) Step (B) is carried out by Nitrobacter
Ans (3)
24. Match the vegetative propagules listed under column-I with the plants given under column-II, choose the
appropriate option from the given choices.
Column I Column II
(A) Rhizone (p) Agave
(B) Offset (q) Bryophyllum
(C) Sucker (r) Ginger
(D) Leaf buds (s) Chrysanthemum
(t) Eichhornia
(1) A-r, B-t, C-s, D-q (2) A-r, B-s, C-p, D-q
(3) A-q, B-p, C-t, D-s (4) A-s, B-t, C-q, D-r
Ans (1)
25. One of the following causes population explosion
(1) Decrease in infant mortality rate and increase in death rate
(2) Decrease in death rate, maternal mortality rate and infant mortality rate
(3) Decrease in infant mortality rate and decreases in the number of people in reprductive age
(4) Decrease in death rate and increase in maternal mortality rate
Ans (2)
26. ___________are the most abundant proteins in the living world
(1) PEPcase of plants and keratin of animals
(2) Ribozyme of plants and collagen of animals
(3) Alcohol dehydrogenase of plants and melanin of animals
(4) RuBisCO of plants and collagen of animals
Ans (4)

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27. One of the chief reasons among the following for the depletion in the number of species making it
endangered is
(1) Over-hunting and poaching (2) Greenhouse effect
(3) Competition and prediation (4) Habitat destruction
Ans (4)
28. In humans, what is the ratio of number of gametes produced from one male primary sex cell to the
number of gametes produced from one female primary sex cell?
(1) 1 : 4 (2) 1 : 1 (3) 4 : 1 (4) 1 : 3
Ans (3)
29. Identify the incorrect statement from the following:
(1) Pyramid of biomass in sea is generally inverted as the biomass of fish far exceeds that of
phytoplanktons
(2) Pyramid of energy is mostly upright, but sometimes it may be inverted
(3) Food chains are generally short with few trophic levels as only 10% of the energy is transferred to
each trophic level from the lower trophic level.
(4) Pyramids of number and biomass may be either upright or inverted
Ans (2)
30. Match the organic compounds listed under Column- I with the explanation given under Column-II;
choose the appropriate option from the given choices.
Column I Column II
(A) Phosphoenol pyruvate (PEP) (p) 6 carbon compound
(B) Ribulose biphosphate (RuBP) (q) 2 carbon compound
(C) Oxaloacetic acid (OAA) (r) 4 carbon compound
(D) Acetyl co-enzyme A (s) 5 carbon compound
(t) 3 carbon compound
(1) A t, B s, C r, D q (2) A r, B s, C t, D p
(3) A t, B p, C q, D r (4) A q, B r, C s, D t
Ans (1)
31. Downs syndrome is an example for _____
(1) Syndrome caused due to gene mutation
(2) Aneuploidy of sex chromosome
(3) Loss of one sex chromosome from the diploid set
(4) Aneuploidy of autosome
Ans (4)
32. The interaction between the organisms of one of the following pairs is an example for commensalism:
(1) Cattle or sheep and grass (2) Wasps and fig tree
(3) Orchid and mango tree (4) Cuckoo and crow
Ans (3)
33. The germ pores in the pollen grain are the regions ________
(1) Which are made up of lignin and suberin
(2) That can withstand high temperature and strong acids and alkalies
(3) Which lack sporopollenin
(4) Through which sperms are released into the female gametophyte
Ans (3)
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34. Heroin is ____
(1) Commonly called coke or crack
(2) A cannabinoid
(3) Used to treat mental illnesses like depression and insomnia
(4) Diacetylmorphine (chemically)
Ans (4)
35. Thorns of Bougainvillea and tendrils of Cucurbita are examples for _______
(1) Adaptive radiation (2) Convergent evolution
(3) Co-evolution (4) Divergent evolution
Ans (4)
36. Some of the steps of DNA fingerprinting are given below. Identify the correct sequence from the options
given:
A. Electrophoresis of DNA fragments
B. Hybridisation with DNA probe
C. Digestion of DNA by RENs
D. Autoradiography
E. Blotting of DNA fragments to nitrocellulose membrane
(1) C A E B - D (2) A C E D B
(3) C A B E D (4) A E C B D
Ans (2)
37. Flocks is _______
(1) A mesh-like structure formed by the association of bacteria and fungal filaments in sewage treatment
(2) The primary sludge produced in sewage treatment
(3) The effluent in primary treatment tank obtained during sewage treatment
(4) A type of biofortified food
Ans (1)
38. ADA deficiency results in ________
(1) Chromosomal disorders
(2) Increased risk of infertility
(3) Decrease in the yield of crop plants
(4) Inability of the immune system to function normally
Ans (4)
39. Parbhani kranti, a variety of bhindi (ladys finger), is resistant to ___
(1) Black rot (2) Bacterial blight (3) Leaf curl (4) yellow mosaic virus
Ans (4)
40. The globular head of myosin contains ___
(1) ATPase enzyme (2) Calcium ions in large quantities
(3) ATP (4) Troponin
Ans (1)
41. EcoRI is ______
(1) used to join two DNA fragments (2) a restriction enzyme
(3) the abbreviation for bacterium Escherichia coli (4) a plasmid
Ans (2)

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42. Roquefort cheese is ripened by using a ____
(1) Bacterium (2) Type of yeast (3) Cyanobacteria (4) Fungus
Ans (4)
43. In this diagram showing the L.S. of an embryo of grass, identify the answer having the correct
combination of alphabets with the right part:

(1) A Epiblast, B Scutellum, C Coleoptile, D Radicle, E Coleorhiza, F Shoot apex

(2) A Root cap, B Coleoptile, C Scutellum, D Coleorhiza, E Epiblast, F Shoot apex
(3) A Epiblast, B Radicle, C Coleoptile, D Scutellum, E Coleorhiza, F Shoot apex
(4) A Shoot apex, B Epiblast, C Coleorhiza, D Scutellum, E Coleoptile, E Radicle
Ans (3)
44. Making of two varieties of a cattle breed like Red Dane which have no common ancestors on either sides
of their pedigree up to 4 6 generations is an example for ________
(1) Out crossing (2) Inbreeding
(3) Inter-specific hybridization (4) Cross breeding
Ans (1)
45. Identify the hormones, A, B and C that are labelled in the given flow chart:

(1) A- GnRH, B - PRL, C ICSH

(2) A- GnRH, B - ICSH, C FSH
(3) A- GnRH, B - FSH, C LH
(4) A- GH, B - FSH, C LH

Ans (3)

46. Statement (A): Photorespiration decreases photosynthetic output.

Statement (B): In photorespiratory pathway, neither ATP nor NADPH is produced.
(1) Statement (A) is correct and statement (B) is wrong
(2) Both the statements A and B are correct
(3) Statement (B) is correct and statement (A) is wrong
(4) Both the statements A and B are wrong
Ans (2)

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47. Identify the incorrect statement from the following:
(1) Atmospheric inputs of phosphorus throughout rainfall are much smaller than carbon inputs.
(2) The reservoir pool for phosphorus cycle is earths crust whereas atmosphere is the reservoir pool for
carbon cycle.
(3) Gaseous exchanges of phosphorus between organism and environment are negligible.
(4) During carbon cycle and Phosphorus cycle, there is very little respiratory release of carbon and
phosphorus respectively
Ans (4)
48. The result of the following reaction/ experiment carried out by Avery et. Al. on Streptococcus
pneumoniac has proved conclusively that DNA is the genetic material;
(1) Live R strain + DNA from S strain + RNAase
(2) Live R strain + DNA from S strain + DNAase
(3) Live R strain + Denatured DNA of S strain + protease
(4) Heat killed R strain + DNA from S strain + DNAase
Ans (2)
49. Match the storage products listed under Column I with the organisms given under Column II; choose
the appropriate option from the given choices.
Column I Column II
(A) Glycogen (p) Sargassum
(B) Pyrenoids (q) Nostoc
(C) Laminarin and mannitol (r) Polysiphonia
(D) Floridean starch (s) Spirogyra
(t) Agaricus
(1) (A) (t); (B) (s); (C) (p); (D) (r) (2) (A) (r); (B) (s); (C) (p); (D) (t)
(3) (A) (q); (B) (p); (C) (s); (D) (r) (4) (A) (s); (B) (r); (C) (t); (D) (q)
Ans (1)
50. Identify the desirable characteristics for a plasmid used in rDNA technology from the following:
A. Ability to multiply and express outside the host in a bioreactor
B. A highly active promoter
C. A site at which replication can be initiated
D. One or more identifiable marker genes
E. One or more unique restriction sites
(1) A, C, D and E only (2) A, C and E only (3) B, C, D and E only (4) B, C and E only
Ans (3)
51. Which compounds were used by Miller in his experiment for obtaining amino acids and other organic
substances?
(1) Ammonia, methane, hydrogen and water vapour
(2) Carbon dioxide, water vapour and methane
(3) Ammonia, methane and carbon dioxide
(4) Methane, ammonia, water vapour and hydrogen cyanide
Ans (1)

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52. Which of the following is true for eutrophicated water body?
(1) Rich species diversity (2) High mineral content
(3) Low organic content (4) High oxygen content
Ans (2)
53. IUDs which are used by females
(1) are implanted under the skin and they release progestogen and estrogen
(2) act as spermicidal jellies
(3) release copper ions in the uterus that increase phagocytosis of sperms
(4) block the entry of sperms into vagina
Ans (3)
54. Which of the following hormones are secreted in large quantities during pregnancy in women?
(1) LH, estrogen and estradiol
(2) hCG, progesterone, estradiol and FSH
(3) hCG and hPL
(4) hCG, hPL, progesterone, estrogen and LH
Ans (4)
55. The kind of coelom represented in the diagram given below is characteristic of :

(1) Round worm (2) Earthworm (3) Tape worm (4) Cockroach
Ans (1)
56. With respect to angiosperms, identify the incorrect pair from the following :
(1) Primary endosperm nucleus 3n (2) Antipodals 2n
(3) Cells of nucellus of ovule 2n (4) Vegetative cell of male gametophyte n
Ans (2)
57. Statement A: For a particular character in an individual, each gamete gets only one allele.
Statement B: Chromatids of a chromosome split (separate) and move towards opposite pole
during anaphase of mitosis.
(1) Statement (A) is correct and statement (B) is wrong
(2) Both the statements are correct and B is the reason for A.
(3) Statement (B) is correct and statement (A) is wrong
(4) Both the statements are correct and B is not the reason for A.
Ans (2)
58. Internal bleeding, muscular pain, blockage of the intestinal passage and anemia are some of the
symptoms caused due to infection by _______
(1) Ascaris (2) Wuchereria (3) Plasmodium (4) Trichophyton
Ans (1)

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59. RNA interference which is employed in making tobacco plant resistant to Meloidegyne incognita is
essentially involved in ______
(1) preventing the process of replication of DNA
(2) preventing the process of translation of mRNA
(3) preventing the process of splicing of hnRNA
(4) preventing the process of transcription
Ans (2)
60. The success of mammals on earth is largely because ;
(1) They have the ability to maintain constant body temperature.
(2) They can conform to the changes in the environment.
(3) They can take care of their young ones as they have mammary glands to suckle them.
(4) They can reduce metabolic activity and go into a state of dormancy during unfavourable conditions
in the environment.
Ans (1)

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