PLAN REFERENCIAL DE INVERSIONES EN INFRAESTRUCTURA DE ACCESO A LOCALIDADES

B H U MAINS ™

SECTION A

1. The genes controlling seven traits in pea, as studied by Mendel, were later found to be located on how many number of chromosomes?

(a) five (b) four (c) seven (d) six

2. Biological weathering of rock is initially brought about by lichens that are

(a) foliose (b) crustose (c) leprose (d) fruticose 3. The balancing organ of ear is (a) lagena and sacculus

(b) semicircular canal and utriculus (c) semicircular canal and otolith (d) otolith and lagena

4. Stratum lucidum is found in (a) dermis and secrete keratin

(b) epidermis and situated below stratum corneum (c) dermis and release keratin

(d) epidermis and originates from hair follicle 5. In Opuntia, the spine is the modification of (a) leaf (b) root

6. Conjoint, collateral and open vascular bundles are present in

(a) monocot root .(b) dicot stem (c) monocot stem (d) dicot root

7. When the pollen grain is transferred to the stigma by air, then this type of pollination is known as (a) zoophily (b) anemophily (c) entomophily (d) none of these 8. Which of the following class had radial symmetrical adult and bilateral symmetrical larva?

(a) echinodermata (b) reptilia

(a) kidney (b) stomach (c) lung (d) alimentary canal

10. Which fossil man has been known from Shivalik hills in India?

(a) Sinanthropus (b) Ramapithecus (c) Pithecanthropus (d) Zinjanthropus 11. Which of the following is the hardest wood? (a) Cedrus devodara (b) Tectona grandis (c) Shorea robusta (d) Dalbergia sisso 12. If flowers are cut and dipped in dilute NaCl solution, then

(a) transpiration is low (b) endo-osmosis occurs (c) no bacterial growth takes place

(d) absorption of solute inside flower cell takes place 13. Which of the following is haploid in gymnosperm? (a) megaspore mother cell, root, leaf

(b) pollen grain, megaspore, nucleus (c) pollen grain, megaspore, root (d) endosperm, pollen grain, megaspore 14. The excretory material of bony fish is (a) amino acid (b) urea (c) ammonia (d) protein 15. The pacemaker is placed

(a) on the interventricular septum (b) on the interauricular septum (c) in wall of right atrium (d) in the wall of left atrium

16. What is difference between ABO incompatibility and Rh+ factor?

(a) less haemorrhagic

(b) does not require transfusion

(c) 1st child dies (d) all of these 17. The 'witches broom' legume is caused by (a) fungus (b) bacteria (c) virus (d) mycoplasma 18. Glaucoma is caused due to which of the following? (a) canal of Schlemn is blocked

(b) increase in the size of eye ball (c) opacity of lens

(d) vitreous humour becomes dry

19. Trilobites were evolved during which of the following period?

(a) ordovician (b) pre-cambrian (c) Cambrian (d) Silurian 20. Duramen is present in

(a) inner region of secondary wood (b) part of sap wood

21. A plant has 25 chromosomes in "microspore mother cell". The number of chromosomes in its endosperm will be

(a) 36 (b) 24 (c) 12 (d) 48 22. 'Ozone hole' refers to

(a) reduction in the thickness of ozone layer in stratosphere

(b) reduction in ozone layer in stratosphere (c) hole in the ozone layers

(d) increased concentration of ozone

23. Stem cuttings are commonly used for propagation of

(a) banana (b) rose (c) mango (d) cotton 24. Halophytes grow on physiologically dry soil due to presence of

(a) excessive salt in water (b) excessive salt in plants (c) excessive humidity outside (d) dry soil

25. A 'drunk person' has earliest effect on which part of brain?

(a) cerebrum (b) cerebellum (c) pons (d) medulla oblongata 26. Fertilised ovum in humans is transplanted in the uterus, how many days after fertilisation ?

(a) 1 day (b) 7 days (c) 8 days (d) 10 days

27. Vitamin D is synthesised by skin, by action of sunlight on

(a) cephano-cholesterol (b) 7-hydroxy cholesterol

28. Hand of man, wing of bat and flipper of seal represents

(a) homologous organs (b) vestigial organs (c) analogous organs (d) evolutionary organs 29. The factor which is not limiting in normal conditions for photosynthesis is

(a) light

(b) chlorophyll content of leaf

30. Embryo from egg without fertilisation is (a) parthenogenesis (b) apogamy

(a) big vacuole (b) intercellular space (c) lysigenous cavity (d) schizogenous cavity 33. Mulching helps in

(a) soil fertility (b) mud formation (c) fish cultivation

(d) soil and moisture conservation

34. During rainy seasons, the ground becomes slippery due to dense growth of

(a) lichens (b) bacteria (c) green algae (d) cyanobacteria 35. In C4 pathway of photosynthesis, carbon dioxide combines with

(a) phosphoglyceric acid (b) oxaloacetic acid (c) phosphoenol pyruvate

(d) ribulose 1, 5 diphosphate

36. During conjugation in Paramecium

(a) out of the four micronuclei formed, three nuclei degenerate

(b) out of the twelve macronuclei formed, four nuclei degenerate

(d) out of the sixteen nuclei formed from zygote, 12 become macronuclei and 4 micronuclei

37. What is the similarity between fly, mosquitoe and cockroach ?

(a) 13 chamber heart (b) all have 3 pairs of legs (c) open excretory system (d) all belong to class insecta

38. Which animal has a notochord throughout its life? (a) bird (b) fish

(c) snake (d) Amphioxus 39. Recombinant DNA technology is related with (a) C. Darwin (b) Stanley Cohen (b) Herbert Boyer (d) both (b) and (c) 40. In an ecosystem, bacteria are considered as (a) micro consumers (b) macro consumers (c) primary consumers

(d) secondary consumers

41. Nerve impulse initiates with movements of

(a) K* (b) Mg+

42. Which of the following is an example of conditioned reflex?

(a) cycling

(b) withdrawal of hand on touching a hot plate (c) watering of mouth at the smell of food (d) flowing of tears while cutting onions

43. In a healthy adult man, the commonest and smallest type of leucocyte, is called

(a) basophils (b) measles (c) eosinophils (d) lymphocytes 44. Nucleotide consist of

(a) one nitrogenous base (b) nitrogenous base + sugar

45. Haemoendothelial placenta is found in (a) man and ape (b) cow and goat (c) deer and camel (d) rat and rabbit. 46. Genes for antibiotic resistance are located on (a) nucleus (b) plasmid

47. Fibrous root system is better adapted than tap root system for

(a) storage of food

(b) anchorage of plant to soil (c) absorption of water and mineral (d) transport of organic matter. 48. Edible part of coconut

(a) mesocarp (b) endosperm (c) ectocarp (d) all of these. 49. Triticale is obtained by crossing wheat with (a) Raphanus (b) Secale (c) Agelops (d) Oryza. 50. Formation of glucose from protein is (a) gluconeogenesis (b) glycogenolysis (c) glycogenesis (d) glycolysis.

SECTION B

Direction : In the following: items more than one of the

answers given may be correct. Select the correct answers and mark it according to the code.

C o d e :

(a) 1. 2 and 3 are correct (b) 1 and 2 are correct (c) 2 and 4 are correct (d) 1 and 3 are correct

51. Which of the following are modes of reproduction of both cyanobacteria and bacteria ?

1. binary fission 2. budding 3. fragmentation 4. endosperm. 52. Below are given few importances of algae. Which among them describes about industrial uses of algae? 1. antibiotic chlorellin is obtained from Chlorella

2. a jelly like substance called agar is obtained from Gelidium

3. Spirulina is a fast growing-, nontoxic blue green alga 4. carrageenin is obtained from Chondrus crispris. 53. Ascomycetes fungi are characterised by

1. occurrence of crozier formation 2. absence of motile cells

3. asexual reproduction by conidia 4. clamp connection on dikaryotic hyphae. 54. The common Indian Cycas species are 1. Cycas rumphii 2. Cycas circinalis 3. Cycas beddomei 4. Cycas media. 55. Which among the following, denote the correct match?

1. legume, siliqua, follicle - dehiscent fruit

2. sorosis and syconus - develops from complete inflorescence

3. achene, cremocarp, drupe - succulent fruits 4. Impatiens, Acanthus, Andrographis - dispersal by

wind.

56. Dichogamy is

1. the condition of bisexual flowers in which male and female reproductive part matures at different times 2. divided into two types protogyny and protandry 3. is a mode of adaptation for cross pollination 4. is observed in Calotropis, Primula.

57. Students of a class, were given two different slides containing transverse section of dorsiventral and isobilateral leaves. Under microscope, they observed few characters. Which of the following would are characters of isobilateral leaf?

1. the leaves are amphistomatic 2. undifferentiated mesophyll cells 3. palisade and spongy parenchyma

4. vascular bundles are conjoint, collateral and closed 58. The drug Henbane is obtained from Hyoscyamus

niger is obtained from

1. stem 2. dried leaves 3. seeds 4. . flowering tops. 59. Deficiency of zinc is responsible for

1. Khaira disease of rice 2. Heart rot of sugar beet 3. White bud of maize 4. Die back of Citrus.

60. Which of the following statements are correct regarding respiratory quotient ?

1. it is measured by Ganong's respirometer 2. in CAM plants the value of R.Q. is zero 3. for organic acids R.Q. is more than one 4. in anaerobic respiration R.Q. is negative. 61. Dark reaction is also termed as 1. Pentose phosphate pathway 2. Calvin cycle

3. Hatch Slack Pathway 4. Blackman's reaction.

62. The physiological mechanism of flowering is associated with

1. vernalization 2. photoperiodism 3. senescence 4. abscission. 63. Bioassay of GA includes

1. dwarf maize leaf sheath 2. avena curvature test 3. a-amylase test 4. tobacco pith culture. 64. The indicator of gold deposits are

1. Amaranthus 2. Thuja 3. Astragallus 4. Equisetum. 65. Exotic species introduced in India include

1. water hyacinth 2. Lantana camara 3. Eupatorium odoratum 4. Nile Perch. 66. Heterosis is

1. superiority of hybrid over parents 2. termed by G.H. Shull

3. results from hybridization 4. method of tissue culture.

67. Examples of organophosphates (a type of chemical pesticide) are

1. malathion 2. ethion 3. aladrin 4. carbaryl.

68. Z-DNA is characterised by which of the following? 1. 1 turn has 12 base pairs

2. repeating unit is dinucleotide

3. diameter is 18A 4. right handed coiled. 69. Reverse transcriptase enzyme is

1. discovered by Roger

2. RNA dependent DNA polymerase enzyme 3. have been reported in Drosophila 4. associated with reverse transcription. 70. Terminalzation is

1. associated with s e p a r a t i o n of h o m o l o g o u s chromosomes

2. observed both in diplotene and diakinesis 3. chiasma shifts towards the chromosome end 4. beginning of RNA synthesis.

71. Besides nucleus DNA is also present in 1. mitochondria 2. chloroplast 3. ribosomes 4. golgi bodies. 72. Cystolith is

1. calcium oxalate crystals 2. like bunch of grapes 3. excretory material of plants 4. calcium carbonate crystals.

73. Which of the following terms are associated with cell wall ?

1. plasmodesmata 2. symplasm 3. apoplasm 4. trilaminar. 74. The genetic code deciphering associates 1. Nirenberg 2. Robert Holley 3. H. G. Khorana 4. F. H. C. Crick 75. Funaria is included in mossy bryophyte because 1. absence of elaters

2. rhizoids are multicellular 3. presence of peristome teeth 4. dehiscence of capsule is regular.

76. Which of the following are the f u n c t i o n s of phospholipid ?

1. help in the digestion and absorption of lipids by aiding emulsification of lipids in the intestine and by f o r m i n g the lipoprotein layer around the chylomicrons

2. act as surfactants in the lungs and help keep the alveoli their shape and function

3. its formation in the liver seems to be an essential pre-requisite for the rapid oxidation of fatty acids in that viscera

4. used for conjugation (detoxication) with halogenated aromatic compounds (eg bromobenzene).

77. Which of the following statements are true ? 1. The cytoskeleton of the erythrocyte is formed by

three groups of proteins - spectrin, actin and ankrin 2. H a e m o g l o b i n (RBC), m y o g l o b i n ( m u s c l e ) ,

cytochromes, peroxidase and catalase (present in all cells) are all heme containing proteins

3. In sickle cell haemoglobin (HbS), the 6th amino acids of the beta chain is glutamic acid instead of the normal valine of HbA

4 IgA is the first antibody formed in response to an antigen.

78. All enzymes are broadly divided into the groups based on their function. These groups are

1. oxidoreductases 2. hydrolases 3. isomerases 4. acid phosphatase. 79. Which of the following examples belong to class crustacea of phylum arthropoda ?

1. Astacus 2. Lepisma saccharina

3. Daphnia 4. Julus.

80. The penis contains three cylindrical masses of erectile tissue. These are

1. two dorsal corpora cavernosa 2. one ventral corpus spongiosum 3. two ventral corpora cavernosa 4. fibrous tissue tunica albuginea.

81. Steps of transcription (synthesis of RNA) involves 1. formation of aminoacyl enzyme complex

2. binding of RNA polymerase to DNA duplex 3. modification of released polypeptides 4. base pairing.

82. Which of the following features are the characteristics of protosome ?

1. spiral cleavage 2. indeterminate cleavage 3. determinate cleavage 4. enterocoely.

83. The left ventricle is larger than the right ventricle because

1. the oxygenated blood that it receives from the left atrium has to be pump throughout the body 2. the chamber of the left ventricle has walls that are

three times the thickness of the right ventricle 3. it pumps less blood, but it pumps it harder 4. the blood in it contains more oxygen than any other

chamber.

84. Which of the following is part of the mononuclear phagocyte system ?

1. macrophages 2. osteoclasts 3. effector T cell 4. memory B cells. 85. Which of the following match (the chemical constituents, source & their functions) are correct?

1. HC1 - Parietal cells - Acid environment needed for destruction of bacteria, protozoa & worms. Acid medium essential for the conversion of pepsinogen to pepsin.

2. Pepsinogen - Ch ief cells - An inactive form of pepsin

3. Serotonin - Argentaffin cells - Smooth m u s c l e stimulant

4. Intrinsic factor - Chief cells - Helps in absorption of vitamin C. 86. Metabolic consequences by the effect of insulin hormone on muscle are

1. decreased fat breakdown in fat cells 2. increased protei n synthesis

3. plasma glucose i s converted to alpha glycerophosphate and used in fat synthesis

4. increased musc'le glycogen.

87. When depolarization of axolemma during nerve conduction takes pllace

1. Na+ move insid e smd k+ mo ve outside

2. equal amounts of Na+ and k+ move out across axolemma

3. it reverses the membrane potential with the inner surface b e c o m i n g p o s i t i v e and outer s u r f a c e electronegativ e

4. more Na+ move outside.

88. Factors controlling regeneraition seem to be 1. neural 2. Ihormonal 3. genetic 4. chemical. 89. Viral disease; of animals are

1. foot and mouth disease 2. mastitis

; 3. rinderpest 4. coccidiosis. 90. Metastasis is

1. regeneration of cancer cells 2. spread of cancer cells 3. rapid division in cancer cells 4. connected with malignant tumor.

91. NMR is considered better than C'T scan in 1. ability t o obtain images in any plane 2. study of tissue metabolism

3. not using ionising radiation 4. low frequency.

92. Sea anemone

1. may often occur associated with hermit crab, protecting the latter from enemies by its stinging cells 2. shows commensalism with hermit crab

3. t a n swim only

4. has a slit like mouth and only single whorl of tentacles

93. Laser is

1. low amplitude surface energy resonance.

2. light amplified by stimulated emission of radiations 3. meant for improving blood supply to heart walls and

other organs by emission of radiation

4. meant for breaking of kidney stones and gall bladder stones into fine powder for removal through natural excretory process instead of surgery

94. Which of the following have pneumatic bone and keeled sternum?

1. peafowl 2. flying bat

3. pigeon 4. Archaeopteryx. 95. Post mating isolation takes place due to

1. gametic incompatibility 2. hybrid breakdown

3. zygotic mortality 4. geographic isolation 96. Autosomal genetic disorders are

1. Down's syndrome 2. Kwashiorkar 3. Cri-du-chat syndrome 4. phenylketonuria. 97. Which of the following statements are incorrect?

1. Earthworm shows bilateral symmetry 2. Endoskeleton of earthworm is sclerotized 3. Vibrissae are stiff and tactile hair.

4. Anus of frog is the common urinogenital organ for outlet for faeces, nitrogenous wastes and sex 98. Which of the following statements are true?

1. The Aedes mosquito is primarily responsible for the transmission of malaria.

2. The term "black death" refers to blue-black haemorrhages under the skin seen in bubonic plague victims

3. In addition to spreading epidemic typhus, mosquitoes also are primarily responsible for transmitting the organisms associated with trench fever and relapsing fever.

4. A biological vector is an organism, usually an arthropod, in which the agent of disease normally passes through some developmental stage (s) including sexual reproduction, before being transmitted by the vector to susceptible host. 99. Bioherbicides are

1. Phytophthora palmivora 2. Chrysolina beetles

3. Bauveria bassiana 4. Bacillus popilliae

100.Which of the following statements is/are not true

about meiosis?

1. meiosis occurs in reproductive cells

2. meiosis results in four diploid daughter cells.

3. in meiosis homologous pairs of chromosomes are pulled apart

4. in meiosis chromosomes do not exchange genetic material.

ANSWERS

1. (c) 7. (b) 13.(d) 19.(b) 25.(b) 31. (a) 37. (d) 43.(d) 49. (b) 55. (b) 61. (c) 67. (b) 73.(a) 79.(d) 85.(a) | 91.(a) i 97. (c) 2. (b) 8. (a) 14. (c) 20. (a) 26.(b) 32. (d) 38. (d) 44. (c) 50. (a) 56. (a) 62.(b) 68. (a) 74. (a) 80. (b) 86.(c) 92.(b) 98. (c) 3. (b) 9. (d) 15. (c) 21. (a) 27. (b) 33. (d) 39. (d) 45. (d) 51. (b) 57. (b) 63.(d) 69. (c) 75.(a) 81. (c) 87. (d) 93.(c) 99. (b) 4. (b) 10. (b) 16. (b) 22. (a) 28. (a) 34. (d) 40. (a) 46. (b) 52. (c) 58. (c) 64. (c) 70.(a) 76.(a) 82. (d) 88.(bl 94. (a) 100.(c) 5. (a) 11.(c) 17. (d) 23.(b) 29. (b) 35. (c) 41. (a) 47. (b) 53. (a) 59. (d) 65. (a) 71.(b) 77. (b) 83.(b) 89.(d) 95.(a) 6. (b) 12. (b) 18. (a) 24. (a) 30. (a) 36. (a) 42. (a) 48. (b) 54. (a) 60. (a) 66. (a) 72.(c) 78.(a) 84. (b! 90. (c) 96.(d)

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