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ICAR JRF Plant Science Old Question Paper 2019 - Download PDF

ICAR JRF Plant Science Old Question Paper 2019 - Download PDF
ICAR JRF Plant Science Old Question Paper 2019 - Download PDF

(1) Epidemic
(2) Sporadic
(3) Endemic
(4) Pandemic
Ans. - (4) Pandemic

Q.2 Biologically, seed is a matured?
(1) ovary
(2) ovule
(3) fruit
(4) capsule
Ans. - ovule

Q.3 EDVS’ are?
(1) Extant derived varieties
(2) Extinct derived varieties
(3) Expressed derived varieties
(4) Essentially derived varieties
Ans. - (4)

Q.4 Common scale of potato is caused by?
(1) Synchytrium endobioticum
(2) Spongospora subterrana
(3) Rhizoctonia bataticola
(4) Streptomyces scabies
Ans. - (4)

Q.5 Which bacterium is associated with preparation of Sauerkraut?
(1) Lactobacillus plantarum
(2) Clostridium butyricum
(3) Bacillus subtillis
(4) Bacillus megaterium
Ans. - (1)

Q.6 Tifton A cytoplasm is found in?
(1) Sorghum
(2) Rice
(3) Pearl millet
(4) Pigeon pea
Ans.- (3)

Q.7 The organic compound glucosinolates are present in members of the family?
(1) Caryophyllaceae
(2) Chenopodiaceae
(3) Euphorbiaceae
(4) Brassicaceae
Ans. - (4)

Q.8 In term of ploidy, trisomy is a form of?
(1) hypoploidy
(2) hyperploidy
(3) polyploidy
(4) diploidy
Ans. - (2)

Q.9 In which direction, do the 5-3 phosphodiester bonds run, in Watson and Crick DNA model?
(1) Parallel
(2) Antiparallel
(3) Forward
(4) Alternate
Ans. - (2)

Q.10 The genetic gain under selection is more rapid if?
(1) the character is polygenic
(2) there is non-additive gene
(3) the alleles are rare
(4) the heritability is 100 per cent
Ans. - (4)

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Q.11 According to the dominance hypothesis of heterosis, which one of the following is a false statement?
(1) Open pollinated populations are highly heterozygous.
(2) In breeding, depression is due to the harmful effects of dominant alleles.
(3) Heterosis is due to the masking of harmful effects of recessive alleles by their dominant alleles.
(4) Each locus of dominant alleles has a favourable effect.
Ans. - (2)

Q.12 The tetrazolium chloride tests activity of?
(1) peroxidase
(2) superoxide dismutase
(3) oxidase
(4) dehydrogenase
Ans. - (4)

Q.13 The unit of radiation dose is called Gray (Gy) and 1 Gray equals?
(1) One Jule/gram of the irradiated object
(2) One Jule/kg of the irradiated object
(3) 100 J/kg of the iradiated object
(4) 1000 J/kg of the iradiated object
Ans. - (2)

Q.14 During the process of lint development in cotton, how many days after fertilization does the lint gain maturity?
(1) 45-50 days
(2) 70-75 days
(3) 100-105 days
(4) 75-80 days
Ans. - (1)

Q.15 Which of the following bacterium is used as a biocontrol agent for the control of Meloidogyne species?
(1) Agrobacterium
(2) Rhizobium
(3) Pasteuria
(4) Erwinia
Ans. - (3)

Q.16 Sclerotinia sclerotiorum produces ascocarp named?
(1) Apothecium
(2) Pseudothecium
(3) Cleistothecium
(4) Perithecium
Ans.- (1)

Q.17 The type of germination in which seeds germinate by keeping cotyledons below the soil surface due to rapid elongation of epicotyle, is referred to as?
(1) Epigeal
(2) Hypogeal
(3) Hypo-epigeal
(4) Epi-hypogeal
Ans. - (2)

Q.18 Pink boll worm is a serious pest of?
(1) Gram
(2) Cotton
(3) Mustard
(4) Ladysfinger
Ans. - (2)

Q.19 In 1965, which famous rose breeder was appointed as First Director Gen eral of ICAR was?
(1) B. P. Pal
(2) M. S. Swaminath an
(3) Har Bhajan Singh
(4) S. A. Hydari
Ans. - (1)

Q.20 Total no. of nuclei involved in double fertilization in normal diploid plant is?
(1) 3
(2) 9
(3) 5
(4) 4
Ans. - (3)

Q.21 How many types of gametes will be formed in F1 in a trihybrid cross?
(1) 27
(2) 4
(3) 8
(4) 16
Ans. - (3)

Q.22 If fertilty of the pollen is determined by the genotype of the pollen itself in F1, then it is?
(1) sporophytic male sterility
(2) gametophytic male sterility
(3) cytoplasmic male sterility
(4) apomictic plants

Q.23 Etiology is the study of?
(1) cause of disease
(2) symptoms of disease
(3) predisposing factors for disease
(4) management of disease
Ans. - (1)

Q.24 Which is the single most important factor affecting drift?
(1) Spray volume
(2) Spray drop size
(3) Kind of sprayer
(4) Kind of solvent
Ans. - (1)

Q.25 Single nucleotide polymorphism (SNP) is?
(1) biallelic
(2) triallelic
(3) monoallelic
(4) null allele
Ans. - (1)

Click Here to Download Last 15 Year ICAR JRF Plant Science Old Paper

Q.26 Heterostyly is observed in?
(1) Linseed
(2) Orchids
(3) Maize
(4) Pearlmillet
Ans. - (1)

Q.27 Complex corrin ring system and cobalt is present in?
(1) Vit B2
(2) Vit B6
(3) Vit B1
(4) Vit B12
Ans. - (4)

Q.28 Cell wall of a bacteria is made up of?
(1) cellulose
(2) chitin
(3) peptidoglycan
(4) dextran
Ans. - (3)

Q.29 In recombinant DNA technology, which enzyme is used to join fragments that have been cut by restriction enzymes?
(1) Eco RI
(2) DNA polymerase
(3) DNA methylase
(4) DNA ligase
Ans. - (4)

Q.30 The hybrid progeny between a single cross and an inbred line is referred to as?
(1) Three way cross hybrid
(2) Double top cross hybrid
(3) Double cross hybrid
(4) Two way cross hybrid
Ans. - (1)

Q.31 In a crop plant, if the percentage of cross pollination exceeds 5 per cent and may reach up to 30 per cent, then the pollination behavior of such crop species is refered as?
(1) cross pollinated
(2) self-pollin ated
(3) often cross pollinated
(4) open pollinated
Ans. - (3)

Q.32 Which one of the following is an example of a bacteria which in an insecticidal?
(1) Bacillus polymyxa
(2) Yersina pestis
(3) Bacillus thurinegiensis
(4) Klebsiella oxytocha
Ans. - (3)

Q.33 ICAR-India Institute of Pulses Research is located at?
(1) Varanasi
(2) Mau
(3) Kanpur
(4) Lucknow
Ans. - (3)

Q.34 Which of the following is a simple interest disease?
(1) Powdery mildew of mango
(2) Downy mildew of grapes
(3) Rust of pea
(4) Loose smut of wheat
Ans. - (4)

Q.35 In tRNA molecule, the D arm is named for the presence of the base?
(1) Dihydrouridine
(2) Thymidine
(3) Pseudouridine
(4) Uridine
Ans. - (1)

Q.36 Which of the following amino acids are aromatic in nature?
(1) Aspartic acid and glutamic acid
(2) Proline and histidine
(3) Lysine and arginine
(4) Phenyl alanine and tyrosine
Ans. - (4)

Q.37 Green ear disease of Pearl millet is caused by?
(1) Tolyposporium penicillariae
(2) Sclerospora graminicola
(3) Claviceps microcephala
(4) Curvulania penniseti
Ans. - (2)

Q.38 The inner layer of ovary wall of an angiospermnis?
(1) Exocarp
(2) Endocarp
(3) Mesocarp
(4) Polycarp
Ans. - (2)

Q.39 Bulked segregant analysis’ was proposed by?
(1) Vos et al.
(2) Williams et al.
(3) Botstein et al.
(4) Michelmore et al.
Ans. - (4)

Q.40 Heterobeltios is is the superiority of F1 over?

Q.41 Identify the common step between aerobic and anaerobic respiration?
(1) glycolysis
(2) citric acid cycle
(3) ETC
(4) glycolysis, citric acid cycle, and ETC
Ans. - (1)

Q.42 Bioassay of cytokinin is done by conducting?
(1) Dwarf maize test
(2) Cotyledonary expansion test
(3) Avena coleoptile test
(4) Rice tip test
Ans. - (2)

Q.43 ldentify the Fungi which grow on dung?
(1) Corticolous
(2) Epixylic
(3) Coprophillaus
(4) Xyllophilous
Ans. - (3)

Q.44 Gir National Park is known for conservation of?
(1) Tiger
(2) Rhino
(3) Asiatic Lion
(4) Pelican
Ans. - (3)

Q.45 If total no. of ‘n’ inbred lines are involved, then the total no. of possible synthetics is?

Q.46 Monocot seed sowing epigeal germination is found in?
(1) rice
(2) wheat
(3) onion
(4) maize
Ans. - (3)

Q.47 The conversion of fixed forms of nitrogen to molecular nitrogen is called?
(1) Ammonification
(2) Nitrogen fixation
(3) Denitrification
(4) Nitrification
Ans. - (3)

Q.48 The enzyme GOGAT stands for?
(1) Glutamine 2-oxoglutarate aminotransferase
(2) Glutamate oxoglutarate aminotransferase
(3) Glutamine oxoglutarate aldolase
(4) Glutamine 2-oxoglutarate
Ans. - (1)

Q.49 In which of the following situations, the enzyme RUBISCO plays dual function during photosynthesis, and produces either 3 phosphoglyceric acid or glycolic acid?
(1) In C3 plants when the CO2 concentration is higher than that of oxygen
(2) In C3 plants when the oxygen concentration is higher than that of CO2
(3) In C4 plants when oxygen concentration is higher than that of CO2
(4) In CAM plants
Ans. - (3)

Q.50 The recent molecular technology which is used to determine the exact order of the bases in a genome is?
(1) RNAi technology
(2) PCR technique
(3) DNA sequencing technique
(4) DNA walking
Ans. - (3)

Q.51 Which of the following represents genome and chromosome number of the oilseed Brassica napus sub. sp. Napus?
(1) AACC, 38
(2) BBCC, 34
(3) CC, 18
(4) AA, 20
Ans. - (1)

Q.52 The process of breeding food crops that are rich in bioavailable micronutrients is referred to as?
(1) Molecular breeding
(2) Speed breeding
(3) Quality breeding
(4) Biofortification
Ans. - (4)

Q.53 Die back disease is caused by the?
(1) virus
(2) fungi
(3) deficiency of 'Cu'
(4) deficiency of Zn'
Ans. -

Q.54 In the seeds of most flowering plants, a triploid albuminous tissue is found which is botanically described as?
(1) Seed coat
(2) Cotyledon
(3) Endosperm
(4) Embryo
Ans. - (3)

Q.55 Who proposed the concept of 'Gene Pool'?
(1) Vavilov
(2) Barbara McClintock
(3) Harlan and de Wet.
(4) Mather and Jink
Ans. - (3)

Click Here to Download Last 15 Year ICAR JRF Plant Science Old Paper

Q.56 If the sequence of bases in a section of DNA is TAGGCTAA,what are the corres ponding sequenced bases in mRNA?
(1) ATCCGATT
(2) TAGGCTAA
(3) AUCCGAUU
(4) AATCGGAT
Ans. - (3)

Q.57 The seed replacement rate of hybrid seeds is?
(1) 40%
(2) 50%
(3) 100%
(4) 75%
Ans. - (3)

Q.58 Peach leaf curl is caused by?
(1) Fungi
(2) Bacteria
(3) Virus
(4) Phytoplasma
Ans. - (1)

Q.59 Which of the following is an example of hesperidium?
(1) Apple
(2) Orange
(3) Pear
(4) Pomegranate
Ans. - (2)

ICAR JRF Plant Science Old  Question Paper 2019

Q.60 XYZ system for hybrid production was proposed for?
(1) wheat
(2) barley
(3) triticale
(4) rice
Ans. - (1)

Q.61 Sheath rot disease in paddy is caused by?
(1) Pyricularia enyzae
(2) Sarocladium oryzae
(3) Rhizoctonia oryzae
(4) Helminthosporium oryzae
Ans. - (2)

Q.62 A set of germplasm accession derived from base collection to represent the genetic diversity in the whole collection is?
(1) Active collection
(2) Reference set
(3) Working collection
(4) Core collection
Ans. - (4)

Q.63 Which of the following belongs to the imperfect fungi?
(1) Puccinina
(2) Phytophthora
(3) Ustilago
(4) Rhizoctonia
Ans. - (4)

Q.64 Biological nitrogen fixation is the conversion of?
(1) N2 to NH3
(2) N3 to Urea
(3) N2 to N
(4) N2 to NO3
Ans. - (1)

Q.65 Sphacelia phase is the characteristic of?
(1) Penicillium
(2) Aspergillus
(3) Claviceps
(4) Curvularia
Ans. - (3)

Q.66 Castor oil falls under which of the following category of fixed oils?
(1) Drying oil
(2) Semidrying oil
(3) Non-drying oil
(4) Fats
Ans. - (3)

Q.67 What is the total no. of anthers found in a rice floret?
(1) 3
(2) 4
(3) 3.5
(4) 6
Ans. - (4)

Q.68 The temperature, pressure and time combination usually employed in autoclaving is?
(1) 125 oC, 15 Ibs, 10-15 min
(2) 128o C, 20 lbs, 10-15 min
(3) 125 oC, 20 Ibs, 15-20 min
(4) 121o C, 15 ibs, 15-20 min
Ans. - (4)

Q.69 Use of light traps for the management of pest is an example of?
(1) Chemical control
(2) Mechanical control
Cultural control
(3) Biological control
Ans. - (2)

Q.70 Red leaf of cotton is caused due to deficiency of?
Nitrogen
(1) Boron
(2) Calcium
(3) Silicon
Ans. - (1)

Q.71 Which of the following is a polysaccharide?
(1) Sucrose
(2) Maltose
(3) Starch
(4) Lactose
Ans. - (3)

Q.72 Which of the following is NOT free living N fixers?
(1) Clostridium
(2) Rhizobium
(3) Rhodospirillum
(4) Azotobacter
Ans. - (2)

Q.73 Use of juvenile hormone and sex attractant comes under?
(1) 1st generation insecticides
(2) 2nd generation insecticides
(3) 3rd generation insecticides
(4) 4th generation insecticides
Ans. - (3)

Q.74 In India, domestic quarantine is in force for which of the following banana diseases?
(1) Moko disease
(2) Panama wilt
(3) Bunchy top
(4) Sigatoka
Ans. - (3)

Q.75 Actinomycetes have characters of both?
(1) bacteria and algae
(2) fungi and algae
(3) fungi and viruses
(4) bacteria and fungi
Ans.- (4)

Q.76 The tag colour of breeder seed is?
opel green
(1) white
(2) blue
(3)golden yellow
Ans. - (4)

Q.77 The viable gametes produced by a translocation heterozygote is in?
(1) Adjacent
(2) Alternate
(3) Adjacent II
(4) Adjacent I &II
Ans. - (2)

Q.78 What is the source of D genome of wheat?
(1) Aegilops tauschii
(2) T. monococcum
(3) Aegilops speltoides
(4) Aegilops squarosa
Ans. -

Q.79 germinating mustard seed converts its lipid into sugar by?
(1) TCA
(2) Calvin cycle
(3) Glycolate pathway
(4) Glyoxalate cycle
Ans. - (4)

Q.80 While analyzing the structural variation in DNA, the 'B' form of DNA consists of how many base pairs per helical turn?
(1) 11
(2) 10.5
(3) 12
(4) 8.5
Ans. - (2)
Q.81 ICAR- National Bureau of Agriculturally Important Micro organisms is located at?
(1) Ludhiana
(2) Shimla
(3) Mau
(4) Bangalore
Ans. - (3)

Q.82 Which of the following is NOT a gram +ve bacterial plant pathogenic genus?
(1) Rathayibacter
(2) Streptomyces
(3) Xanthomonas
(4) Clavibacter
Ans. - (3)

Q.83 Minimum population size required for recombination of all F1 gametes at random is?
(1) 2n
(2) 3n
(3) 4n
(4) n2
Ans. - (2)

Plant Science JRF Question Paper 2019

Q.84 Scientific name of maize used to make popcorn is?
(1) Zea mays indurata
(2) Zea mays saccharata
(3) Zea mays amylacea
(4) Zea mays everta
Ans. - (4)

Q.85 Which of the following checks the untimely sprouting of potato tubers?
(1) Abscisic acid
(2) Ethylene
(3) Gibberelin
(4) Maleic hydrazide
Ans. - (4)

Q.86 Which element is a part of chlorophyll?
(1) Ca
(2) Mg
(3) K
(4) Cl
Ans. - (2)

Q.87 Assuming Hardy-Weinberg equilibrium, if the frequency of the two alleles at the gene being studied are 0.6 and 0.4, the genotypic frequency of heterozygotes will be?
(1) 0.80
(2) 0.48
(3) 0.64
(4) 0.16
Ans. - (2)

Q.88 Okazaki fragment is related to?
(1) DNA synthesis
(2) Protein synthesis
(3) mRNA formation
(4) tRNA formation
Ans. - (1)

Q.89 Presence of flagella all around the cell of bacteria is referred to as?
(1) Peritrichous
(2) Monotrichous
(3) Lophotrichous
(4) A trichous
Ans.- (1)

Q.90 II-stage of Purccinia graminis tritici produces?
(1) Teleutospores
(2) Uredospores
(3) Aeciospores
(4) Pycniospores
Ans. - (1)

Q.91 Which of the following plant diseases are by caused Deuteromycetes?
(1) Powdery mildews
(2) Ergots
(3) Downy mildews
(4) Wilts
Ans. - (4)

Q.92 The multiple replicates of same chromosome holding together in a parallel fashion is called?
(1) Endomitosis
(2) Polyteny
(3) Balbiani
(4) Puffing
Ans. - (2)

Q.93 While explain ing cell organelles, in ribosomes, the suffix 's' in ribosome unit indicates?
(1) Sedimentation area
(2) Sedimentation coefficient
(3) Surface area
(4) Structural protein
Ans.- (2)

Q.94 Which one of the following is a polyphagous pest?
(1) Termite
(2) Mango hopper
(3) Mango nut weevil
(4) Rice stem borer
Ans. - (1)

Q.95 Entry of the pollen tube through micropyle is known as?
(1) Mesogamy
(2) Microgamy
(3) Porogamy
(4) Chalazogamy
Ans. - (3)

Q.96 In germination test, what is the minimum number of replication as per ISTA?
(1) one
(2) three
(3) two
(4) four
Ans. - (4)

Q.97 Which of the following is ssDNA plant virus?
(1) Cauliflower mosaic virus
(2) Banana bunchy top virus
(3) Bacilliform DNA virus
(4) Rice dwarf virus
Ans. - (2)

Q.98 Grey mould of chick-pea is caused by
(1) Sclerotium rolfsii
(2) Ascochyta rabiei
(3) Botrytis cinerea
(4) Sclerotinia sclerotiorum
Ans. - (3)

Q.99 Which of the following comes under nutria-cereals?
(1) Rice
(2) Wheat
(3) Maize
(4) Millets
Ans.- (4)

Q.100 Which of the following is a surface fibre?
(1) Jute
(2) Cotton
(3) Flax
(4) Sisal
Ans. - (2)


Q.101 Staggered sowing is practiced for?
(1) good field establishment
(2) uniform flowering
(3) tolerance to pests
(4) easy harvesting
Ans. - (2)

Plant Science JRF Question Paper 2019

Q.102 What is the primary acceptor of CO2 in Hatch-Slack cycle?
(1) Phosphoenol pyruvic acid
(2) Ribulose biphosphate
(3) Phosphoglyceric acid
(4) Diphosphoglyceric acid
Ans. - (1)

Q.103 The epidermal hair on the stem are referred to as?
(1) epiblema
(2) trichomes
(3) periderm
(4) endarch
Ans. - (2)

Q.104 The enzyme reverse transcriptase was discovered by?
(1) Watson and Crick
(2) Kary Mullis
(3) Gilbert
(4) Temin and Baltimore
Ans. - (4)

Q.105 Soybean rust is caused by?
(1) Puccinia glycines
(2) Puccinia graminis
(3) Phakospora pachyrokiz
(4) Macrophomina phaseolina
Ans. - (3)

Click Here to Download Last 15 Year ICAR JRF Plant Science Old Paper

Q.106 The isolation distance to be maintained for retaining the genetic purity of parental lines of maize hybrids while producing foundation seed is?
(1) 400 meters
(2) 1000 meters
(3) 100 meters
(4) 200 meters
Ans. - (1)

Q.107 In a type of apomixis known as adventive embryony, the embryos develop directly from?
(1) zygote
(2) synergids or antipodals in an embryo sac
(3) nucleus and integuments
(4) accessory embryo sacs in the ovule
Ans. - (3)

Q.108 Pore-size of filter used for laminar flow air chamber is?
(1) 0.30 um
(2) 1.25 um
(3) 1.75 um
(4) 2.00 um
Ans. - (1)

Plant Science JRF Question Paper 2019

Q.109 The technology that prevents farmers from harvesting a crop by saving seed from the current year's crop to plant the next season's crop is termed as?
(1) Apomixis technology
(2) Synthetic technology
(3) Transgenic technology
(4) Terminator technology
Ans. - (4)

Q.110 A cell contains 40 chromatids at the beginning of meiosis.After the completion of meiosis, the cells would contain?
(1) 20 chromosomes
(2) 10 chromosomes
(3) 40 chromos omes
(4) 80 chromosomes
Ans. - (2)

Q.111 If the mRNA (AUG CUA GCU AAA UAA) is translated into protein, how many amino acids would it contain?
(1) 2
(2) 3
(3) 4
(4) 5
Ans. - (3)

Q.112 The uredia are arranged in rows on leaves in?
(1) black rust of wheat
(2) brown rust of wheat
(3) yellow rust of wheat
(4) rust of pea
Ans. - (3)

Q.113 Ecdysone is a/an?
(1) chemo-sterilant
(2) pheromones
(3) repellents
(4) insect growth regulator
Ans. - (4)

Q.114 Which order of insects is commonly used as a biological control agent?
(1) Coleoptera
(2) Hemiptera
(3) Diptera
(4) Hymenoptera
Ans. - (4)

Q.115 Which of the following is a systemic fungicide?
(1) Zineb
(2) Mancozeb
(3) Thiram
(4) Carbendazim
Ans. - (4)

Q.116 The concentration of copper sulphate in 2:2:200 Bordeaux mixture is?
(1) 1.0%
(2) 1.2%
(3) 0.8%
(4) 1.4%
Ans. - (1)

Q.117 Genetic purity of nucleus seed is?
(1) 99%
(2) 98%
(3) 99.5%
(4) 100%
Ans. - (4)

Q.118 Which bacteria converts nitrite into nitrate form?
(1) Nitrosomonas
(2) Nitrosococcous
(3) Nitrobacter
(4) Rhizobium
Ans. - (3)

Q.119 If a male sterile line is crossed with heterozygous male fertile plant and the progeny segregated as 1:1 male fertile and male sterile plants, respectively then the male sterility is termed as?
(1) cytoplasmic male sterility
(2) Genetic male sterility
(3) cytoplasmic genic male sterility
(4) environment sensitive male sterility
Ans. - (2)

Q.120 Apomictic seed is seed produced?
(1) by fertilization
(2) by vegetative nuclei
(3) without fertilization
(4) produced inside thalamus
Ans. - (3)

Q.121 Anthropochory is?
(1) wind dispersal of pathogens
(2) human dispersal of pathogens
(3) water dispersal of pathogens
(4) insect dispersal of pathogens
Ans. - (2)

Q.122 Centre of origin of pigeon pea is?
(1) the Mediterran ean centre
(2) the Chinese centre
(3) the South American centre
(4) Peninsular India
Ans. - (4)

Q.123 Multi Parent Advanced Generation Intercross Population (MAGIC) generally requires how many members in crossing?
(1) 100 parents
(2) 8 parents
(3) 2 parents
(4) All members of minicore
Ans. - (2)

Q.124 ldentify the best suited stage of cell division for in situ hybridization in species where chromosome length is very short (eg. pulses)?
(1) Metaphase
(2) Pachytene
(3) Telophase
(4) Diakinesis
Ans. - (2)

Q.125 Cephaleuros species cause?
(1) White rust
(2) Yellow rust
(3) Black rust
(4) Red rust
Ans. - (4)

Click Here to Download Last 15 Year ICAR JRF Plant Science Old Paper

Q.126 Vit B1 is also known as?
Thiamine
Riboflavin
Niacin
Biotin
Ans. - (1)

Q.127 Which of the following is present in a prokaryotic cell?
(1) Nucleoid
(2) Nuclear membrane
(3) Mitochondria
(4) 80 S ribosomes
Ans. - (1)

Q.128 The phenomenon of wobble hypothesis DOES NOT comply with which one of the following?
(1) the multiple codes for a given amino acid
(2) possible suppression of point mutations in the third base of the codons
(3) more easily removed deacylated RNA during protein synthesis
(4) fewer mRNA molecules than expected
Ans. - (4)

Q.129 Triticale is a man-made cereal produced by crossing?
(1) T. aestivum x Secale cereal
(2) T. monococcum x T. speltoides
(3) T. bacticumx x T. turgidum
(4) Einkom x Emmer
Ans. - (1)

Plant Science JRF Question Paper 2019

Q.130 Pollination by bats is found in?
(1) Rafflesia
(2) Colocasia
(3) Anthocephalus
(4) Ceratophyllum
Ans. - (3)

Q.131 Vertical resistance is also known as?
(1) Partial resistance
(2) Field resistance
(3) Dilatory resistance
(4) Major gene resistance
Ans. - (4)

Q.132 Which variety of pigeon pea was used for whole genome sequencing?
(1) Pusa 992
(2) BSMR 736
(3) TJT 501
(4) Asha
Ans. - (4)

Q.133 Pahala blight of sugarcane is caused due to deficiency of?
(1) Mn
(2) Mo
(3) Cu
(4) S
Ans. - (1)

Q.134 Which of the following is a pleomorphic fungus?
(1) Sclerospora
(2) Erysiphe
(3) Ustilago
(4) Puccinia
Ans. - (4)

Q.135 L-DOPA, useful as a drug for Parkinson's disease has been isolated from?
(1) Coptis japonica
(2) Thalictrum spp.
(3) Phellodendron amurense
(4) Vina faba
Ans. - (4)

Q.136 Root nodules contain?
(1) haploid cells
(2) diploid cells
(3) triploid cells
(4) tetraploid cells
Ans. - (4)

Q.137 French bean seeds are produced by?
(1) self-pollination
(2) often cross polination
(3) cross pollination
(4) self-incompatibility
Ans. - (1)

Q.138 The appendages on cleis tothecium are coiled in the genus?
(1) Erysiphe
(2) Phyllactinia
(3) Microsphaera
(4) Uncinula
Ans. - (4) 

Q.139 Phenomenon of transduction in bacteria was discovered by?
(1) Griffith
(2) Tatum
(3) Lederberg
(4) Zinder& Lederberg
Ans. - (4)

Q.140 The cell organelles that act as factories which translate the genetic information from nucleus into usable protein molecules is?
(1) mRNA
(2) endoplasmic reticulum
(3) ribosomes
(4) vesicles
Ans. - (3)
Q.141 Inner integument of the seed is called?
(1) Testa
(2) Micropyle
(3) Tegmen
(4) Epithelium
Ans. - (3)

Q.142 In which kingdom is Oomycota included?
(1) Fungi
(2) Chromista
(3) Protozoa
(4) Protista
Ans. - (2)

Q.143 The first enzyme to be purified and crystallized was?
(1) urease
(2) diastase
(3) insulin
(4) Zymase
Ans. - (1)

Q.144 Which of the following is asexual spores in fungi?
(1) Ascospore
(2) Basidiospore
(3) Oospore
(4) Chlamydospore
Ans. - (4)

Q.145 The apomixis that occurs commonly in Citrus species is?
(1) Gametophytic apomixis
(2) Sprophytic apomixis
(3) Diplospony
(4) Apogamy
Ans. - (2)

Click Here to Download Last 15 Year ICAR JRF Plant Science Old Paper

Q.146 In cereals, phytin is stored in?
Aleuron layer
(1) Endosperm
(2) Scutellum
(3) Embryo
Ans. - (1)

Q.147 "Which of the following is NOT a physiological disease?
(1) Black heart of potato
(2) Tip burn of paddy
(3) Dieback of linseed
(4) Marsh spot of peas
Ans. - (3)

Q.148 Which stain is generally used for staining mitochondria?
(1) Acetocarmine
(2) Acetoorcein
(3) Potassium iodide
(4) Janus green B
Ans. - (4)

Q.149 The fungi in which parasitic habit is weakly developed is called?
(1) Perthotrophs
(2) Facultative parasites
(3) Necrotrophs
(4) Facultative saprophytes
Ans. - (2)

Q.150 Seven characters of Mendel's experiment were located on how many chromosomes?
(1) 7
(2) 4
(3) 5
(4) 6
Ans. - (2)


Q.151 The classical work of Beadle and Tatum on Neurospera carsa has proved that?
(1) Replication of DNA is semiconservative
(2) Viruses have genetic material
(3) One gene is responsible for synthesis of one enzyme
(4) Plant cells contain prokaryotic genome
Ans. - (3)

Q.152 The tendency of genes to remain together in the same gamete during segregation and not show independent segregation is found in?
(1) QTLS
(2) Epistatic genes
(3) Linked genes
(4) Multiple alleles
Ans. - (3)

Q.153 Scientific name of pulse beetle is?
(1) Tribolium castaneum
(2) Rhizopertha dominica
(3) Callosobruchus chineusis
(4) Plodia interpunctella
Ans. - (3)

Q.154 In a self-pollinated crop variety, if a mechanical mixture was caused during threshing, then which breeding method would you adopt to purify the variety?
(1) Recurrent selection
(2) Bulk selection
(3) Mass selection
(4) Pure line selection
Ans. - (4)

Q.155 Which plant is used for making cricket bat?
(1) Morus
(2) Salix
(3) Adina
(4) Juglans
Ans. - (2)

Q.156 Nonsense codon opal is?
(1) UGA
(2) UAG
(3) UAA
(4) AUU
Ans. - (1)

Q.157 The three-nucleotide combination, adenine-uracil-guanine codes for?
(1) Methionine
(2) Leucine
(3) Alanine
(4) Guanine
Ans. - (1)

Q.158 Histone proteins found in the nucleus are rich in?
(1) Lysine and arginine
(2) Lysine and threon ine
(3) Arginine and threonine
(4) Methionine and threonine
Ans. - (1)

Q.159 Which of the following is a soft fibre?
(1) Jute
(2) Cotton
(3) Sisal
(4) Manilla hemp
Ans. - (1)

Q.160 In butterflies and moths, the sex determination system is?
(1) XX-XY, heterogametic male
(2) XX-XO, heterogametic male
(3) ZW-ZZ, heterogametic female
(4) ZO-ZZ, heterogametic female
Ans. - (3)

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