ICAR NET 2018 (II)

2018 NET (II) Question paper

1.      agar agar is produced from – Red algae (Gelidium sp)

2.      Durable cell wall can be seen in which family of bacteria - Firmicutes (G⁺ve)

3.      Vivotoxin example – Fusaric acid, Pyricularin and Lycomarasmin (All the above answer)

4.      Favourable temperature required for zoospore and sporangia germination in Phytophthora – 12 ^o C & 24 ^o C

5.      Ustilago scitaminea  causes which disease in sugarcane Smut

6.      Father of soil solarisation - Jaacov Katan

7.      Parasexuality was discovered by – Pontecarvo

8.      The term Phytolaexin was introduced by - K. Muller

9.      Kittleson killer (captan) invented in the year – 1952

10.  Soda Bordeaux otherwise called as – Burgundy mixture

11.  Karnal bunt was reported in India by – Mitra

12.  Stem rust rules was initially given in India by – Mehta

13.  Environmental factors was first studied by -  Vanderplank

14.  The term elictor was coined by – Noel Kein

15.  Nucleic acid is the infectious material of virus 1^st given by – Gierrer and Schramm

16.  Systemic acquired resistance depends on the external application of Salicylic acid (signalling pathway of SAR)

17.  Rice khaira is caused by Zn deficiency

18.  Citrus mottle leaf is due to – Zn deficiency (Fe)

19.  Halo heart of turnip and cauliflower - Mn

20.  Best suitable method for the control of soil borne diseases –

21.  Match the following

·        White tip of rice - Aphelenchoides besseyi

·        Root not nematode -  Meloidogyne incognita

·        Reniform nematode - Rotylenchulus reniformis

·        Wheat ear cockle nematode – Anguna tritici

22.  Suitable management of Sclerotium rolfsii –

A.      Irrigation

B.      application of carboxin

C.      application of Propicanozole

D.     application of Trichoderma

E.      Strobulurin group of fungicices

23.  Teleomorph of alternaria – Lewia

24.  Toxin produced by Pyricularia oryzae – Pyricularin, alfa piconilic acid, pyricula.

25.  Piliform ascospore is produced by – Claviceps

26.  Muriform conidia is produced by – Alternaria

27.  Podosphaeria leucotricha produced how many ascus – one (1)

28.  Size of bean common mosaic virus – 750 × 12 nm

29.  Genome of phi X phage– ds DNA (ss DNA also in some occasions)

30.  Potato leaf curl virus of Gemini virus genome – ss DNA

31.  λ phage contains – both lytic and lysogenic phases

32.  Simple interest diseases produces the curve – Saturation curve

33.  Signalling pathways between host and pathogen – cAMP & MAPK

34.  Plant shows resistance top all the type of races of pathogen – Horizontal resistance

35.  Carborendum powder is used – To make wounds in the plants (basic carrier material in fungicidal formulations)

36.  Ground nut bud necrosis is caused by – Virus

37.  Taphrina deformans caused which disease – Peach leaf curl

38.  Turmeric leaf blotch is caused by –Taphrina maculans

39.  Banana streak virus is transmitted by – Mealy bug

40.  Most sensitive method for the detection of plant viruses – ELISA (Up to 10pg/ml)

41.  Chrysanthemum stunt is due to – Viroid

42.  Little leaf of brinjal is caused by – Phytoplasma

43.  Botrytis cinerea sporulation is seen in the presence of – UV rays

44.  Viral parasite ?????????

45.  Artificial culturing of fungal spores was 1^st identified by –

46.  Genus Clostridum was identified by – Prazmowsi (Louis paster)

47.  ICTV was established in the year – 1973

48.  Coenocytic mycelium is produced by genus Phytophthora

49.  Hartig nets are found in – Ectomycorrhizae

50.  Ecto parasitic fungi

51.  Fungus used for genetic studies – Neurospora crassa (Pin/ red brad mould)

52.  PTGS is discovered in - Nematode

53.  B’dellovirio is – G ^–ve (gram negative)

54.  mycoparasitism is between –  fungi and fungi

55.  Hypersensitive response in seen in which crop – Tobacco

56.  Enzyme produced by Erwinia amylovora – Amylovorin (MW – 165000 dalton)

57.  Cuscuta obtain food through –

58.  Gram negative bacteria belongings to the family – Gracilicutes

59.  Flagella all over the body – Peritrichous (Erwinia)

60.  Bean wilt could be maintained in the labortory

61.  Bacteria cell  wall is made up of – Peptidoglycon/ mucopeptides

62.  Virus movement from cell to cell is facilitated by – Plasmodesmata

63.  8^th edition of bergey’s manual of dererminative bacteriology was edited by - R. E. Buchanan and N. E. Gibbons

64.  Protomyces macrosporus matured conidia can spread through –

65.  Father of plant Pathology in India – E. J. Butler

66.  Indian Phytopathological Society was started by – B. B. Mundkur

67.  1 gm of solution contains 50 a.i, mixed in 1 lit of water then what is the concentration in ppm – 500ppm

68.  Striga is partial root parasite

69.  Nucleic acid molecular weight of bacteria - 1.5 × 10⁹  Da (Mollicutes - 0.5 × 10⁹ Da)

70.  Molecular weight of bacterial chromosome - 5 × 10⁷

71.  Bhendi yellow vein virus is transmitted by – Whitefly (Bemisia tabaci)

72.  Potato mosaic virus belonging to family – Potyvirus

73.  Molecular weight of TMV – 39 million daltons (NA MW - 2 × 10⁶ dalton)

74.  Both acropetal and basipetal movement fungicide – Forsetyl Al

75.  Both Systemic and contact fungicide – Metalaxyl MZ

76.  Anthracnose best managed by the application of –

77.  Fungicide with nemaiticidal activity –

78.  Ziram is applicable in which disease – Ergot, Smut, Blast of bajra

79.  Tyloses body present in which diseases –

80.  Which bacteria produces blue colour strain while adding to milk – Pseudomonas syncyanea

81.  PCR can amplify – both DNA & RNA

82.  Most suitable medium for culturing microorganisms – Oat meal agar (Potato dextrose medium)

83.  fungicide which inhibit mitosis synthesis – Benomyl, Thibendazole, Benzamidazole (all the above)

84.  black tip of mango is by brick clings along with deficiency of – B deficiency

85.  Club rot of cabbage cab be best controlled at – 7.6 – 7.8

86.  Synchitrium endobiotium can survive in soil for how many years - 

87.  The allowed percentage of karnal bunt of wheat infected seeds – 0.25 (not sure)

88.  Citrus canker can be transmitted by – Leaf minor (probably by water splash and wind also)

89.  Loss of turbidly and dropping of leaves is  the characteristic symptoms of –

·        Wilt

·        Anthracnose

·        Grapes mildews

90.  No of septations in conidia of Pyricularia oryzae – 2 septations, 3 cells

91.  Blossom end rot of tomato is caused by – Calcium deficiency

92.  Recent advanced techniques in identification of virus – RNA interference

93.  Secondary fixing agent in electron microscope – Osmium tetraoxide

94.  Pseudomonas syringae toxin otherwise called as – all the above (wild fire toxin/ Tab toxin, T - toxin)

95.  Which race will affect banana moko wilt – Race 2

96.  Demicyclic means – lack of uredial stage

97.  Which secretion system is found in almost all plant pathogenic bacteria – Type I

98.  EPIPRE forcasting model for – Cereal rusts

99.  Erwinia enters into the plant cells through the enzyme – cutinaze/ pectinase

·        Gram positive, root nodule nitrogen fixing bacteria – Frankia

·        New name of Clavibacter xyli subsp. Xyli – Lefsonia xyli subsp. Xyli

·        no of segmentations in alfa alfa mosaic virus –

·        Phytoalexins produced by the plant cells due to – production of secondary metabolites (PAL- Phenyl alanine lyases)

·        Chemical used to reduce the Phytotoxicity of another chemicals – Safener (Lime)

·        Which antibody is used in PCR technique – Immunosorbent PCR

·        Quarantine can be only applicable for – Seed borne diseases only

·        Inoculum development of Phyophthora infestans –

·        Dispersal of pathogen through humans - Anthrapochory

·        Singe celled ascus is produced by – Podosphaeria leucotricha

·        PR proteins accumulated in – Vaccuole & apoplast

·        Toxins accumulated in – apoplastic nucleus

ICAR NET 2018 (I)

ASRB NET 2018 (I) QUESTION PAPER

1.      Agar Agar is produced from – Red algae (Gelidium spp)

2.      Stem gall of coriander is caused by – Protomyces macriosporus

3.      Bird eye spot with red margin is characteristic symptoms of – Grapes anthracnose

4.      In bacteria 70S ribosomes are present in - cytoplasm

5.      Who reported 1^st time tobacco necrosis satellite virus – Kassanis, 1962

6.      Broom rape is an obligative parasite on which crops -      

7.      Pierse diseases of grapes is caused by – Xylela fastidiosa

8.      Shape of growth curve of bacteria – bimodial curve

9.      Viroids consists of  - ss RNA

10.   Fungicide with both upside (acropetal) and downside (basipetal) movement – forsetyl Al, metalaxyl

11.  Strobulurin interferes with – inhibit electron transfer in mitochondria, disrupting metabolism.

12.  Food reserve of bacteria – Poly β – hydroxyl butyrate

13.  1^st bacterium completely genome sequenced – Xylela fastidiosa (Simpson, 200)

14.  Mode of action for Triazole – inhibit sterol biosynthesis

15.  Virus strain used in cross protection – mild strains

16.  Time period between inoculation/infection – incubation period

17.  Blister blight of tea is caused by – Exobasidum vexans

18.  Organomercural fungicide – Cerasan & Cerasan wet

19.  Virus that affect G^-ve bacterium is known as – bacteriophage

20.  Grape fan leaf virus is transmitted by – Xiphinema index (nematode)

21.  Black heart of  potato is caused by – O₂ deficiency

22.  Father of molecular plant pathology – Noel Kein

23.  Most sensitive technique for detecting pathogen – ELISA (10ng/ml)

24.  Apple proliferation is cause by – Phytoplasma

25.  1^st Fungus completely genome sequenced – Magnoporthae grisea (Dean, 2005)

26.  Fungicide applied prior to fungal infection – Protectant fungicide

27.  Pore size of laminar air flow chamber – 0.3 µm

28.  A. R (K84) active against – A. tumefaciens

29.  Basidiospores of smut fungi-

30.  Prunus necrotic ring spot virus is transmitted by -  Pollen, seed

31.  Xanthomonas axinopodis pv. tunicae affects – bacterial blight of pomegranate

32.  Systemic acquired resistance induce plants by external application of – Salicylic acid

33.  White hallow around brown spot of tomato -

34.  EPIDEM  is for – late blight of tomato and potato

35.  Cuscuta is a – Total stem parasite

36.  White fly transmitted viruses under group – Geminivirus

37.  Fungicide used as a plant defence activator - propicanozole

38.  Indian stem rust rules was written by – Nagarajan and Singh

39.  Papya ring spot virus transmitted by –Aphids

40.  Intracellular PGPR - Bradorhizobium

41.  Monograph of Fusarum was written by – C. Booth

42.  Indication of citrus greening –

·        CTV – kagzige lime

·        Citrus greening – sweet orange

·        Citrus exocortosis – trifoliate orange

·        Phytoplasma –periwinkle

43.  Root stock against collar rot -                    (MM104, M9, MM106, M793)

44.  Pathogenic growth and disease can be estimated by –

45.  Cosmotic fungicide - Tridemorph                       ,

46.  Rescue treatment fungicide - Triademefon

47.  MOA for carbendazim – disrupts cell wall

48.  Khiara disease of rice can be controlled by – application Znso₄

49.  Water medium preservation for fungicide culture -                  (*Castallin)

50.  14 opines produced during pathogenis of –

51.  Phytoplasma infected phloem cells while staining gives which colour – Blue

52.  Define vertifolia effect – loss of horizontal resistance while breeding for vertical resistance

53.  Phytoplasma sensitive to – tertacycin

54.  Humped uredospore is present in – hemileia

55.  In PCR technique which antibody is used – Taq polymerase

56.  Formation of pingwheel in cytoplasm is a characteristic symptom of which group of virus – potyvirus

57.  RTV contains –

58.  Withing syndrome of ‘kresek phage’ occurs in – bacteria blight of rice

59.  Angular leaf spot of cotton survives as  -

60.  1^st recorded plant pathogen – gaint mistletoe 

61.  Cleistothecia dichotomously branced at –

62.  Hartig nets are found in – ectomycorrhizae

63.  Year of ICTV - 1973    , * ICNV – 1966

64.  Endospore forming bacterial genus – Bacillus, clostridium

65.  Exclusion by legislation is known as – plant quarantine

66.  Which race cause moko wilt disease – race 2

67.  Leaf wetness period for apple scab –9hrs

68.  Which crop is not sensitive to ozone damage –

69.  Autoclave temperature at 15lb/inch² for 30mit –121.6 ^oC

70.  Syringomycin is a- antibiotic

71.  Erwinia family – Enetrobacteriaceae

72.  Ratton stunting of sugar cane is caused by – leifsonia xyli subsp. xyli

73.  Stage absent in demicyclic rust – lack of uredial stage

74.  Tumour inducing principle of crown gall was discovered by – new and kerr

75.  Symptoms of downy mildew of pearl millet –

76.  Xanthomonas axinopodis pv. tunicae affects -                              (leaf, fruits , stem etc)

77.  Citrus gummosis is caused by – Phytophthora citrophthora

78.  Conidial germination Pyricularia grisea, relative humidity – 90 – 95 %

79.  V shaped chloritic lesions are  charecteristic symptoms of –  papya ring rot

80.  Watery soft rot of carrot is caused by – Erwinia caratovora pv. caratovora

81.  Dyes used for gram staining – methylene blue

82.  Collar rust is due to                   (copper, boran, potassium, zinc)

83.  Foot cells vesicles and phalloides are present in –  Aspergillus

84.  Critical stage for Taphrina deformans if one spary remains -

85.  Late blight of potato in Ireland is due to – Phytophthora infestans

86.  Oyster mushroom – Plerotus sojar caju

87.  Blossom end rot of tomato is caused by – Ca deficinecy

88.  Gram positive contanis 85 % of mucopeptides

89.  Gram negative lack of lipo teichoic acid

90.  Multiplication of viroid is by – RNA polymerse II

91.  Which spore is haploid- Ascospore

92.  Bacteria respiration is increased is due to – binding and unbinding of oxidative phosphorylation

93.  Budding spores are – Blastopores

94.  Disease dispersed y water splash –

95.  Bacteria that affect another bacteria – B’delovibrio

96.  1^st cloned plant toxin –Tab toxin

97.  AQ 10 is used against – grapes powdery mildew

98.  Mutant that not synthasize essential metabolites -      (auxo, bio, myxo, semitroph)

99.  Hypersentive reaction occurs in –

100.                      Bunch of flagella on both ends – lopotrichous

·        Indicator plant for potato spinder tuber viroid – Tomato

·        RT –PCR used for detection of -                                  (virus, viroid, virliferous vect, all)

·        Technique to produce virus free plant – meristem tip culture

·        1^st imperical mycologist in india in 1905 –E. J. Butler

·        White tip panicle of rice is cause by – Aphelenchoides besseyi

·        L form of bacteria means – Cell wall lacing bacteria

·        Protein accumulate in the –

·        Greeinish  growth at lower surface -             (enation)

·        Buck eye spot of tomato 1^st infects –

·        Foot rot of lilium --------------

·        Yellowish transculent spots are charesteristic symptoms of –

·        1^st avirulent gene by -                (staskawicz, 1984)

·        Most of the plant pathogenic bacteria are – ve

·        Candidates phytoplasma less non helical, colonize, phloem nad insects given by-

·        Bitter pit of apple – imbalance water supply            (deficiency)

·        Taro blight pf colacasi -                  (ahwina, sakin 2, pooran pat, kach)

·        Single celled light coloured conidia -          (cephalosporium, nigrospora, pyricularia, cladosporium)

·        Contagium vivum fluidum was given by –  Beijerinck

·        Muriform septations was found in – alternaria

·        1^st line i defence mechanism in plants -            (thick cell wall, phenolic acids, more protein, ect)

·        Chemical to control black tip of mango – application of borax

·        Loose smut is a – internally seed borne pathogen

·        Mycovirus – ds RNA

·        Phytophthora infestans surives as – infected tubers