Agrilives.com quiz

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Agrilives.com quiz

JRF plant science quiz 2019 - q91 to q160

Which of the following plant diseases are by caused Deuteromycetes?

0 points

Powdery mildews

Ergots

Downy mildews

) Wilts

Clear selection

The multiple replicates of same chromosome holding together in a parallel fashion is called?

0 points

Endomitosis

Polyteny

Balbiani

Puffing

Clear selection

While explain ing cell organelles, in ribosomes, the suffix 's' in ribosome unitindicates?

0 points

Sedimentation area

Sedimentation coefficien

Surface area

Structural protein

Clear selection

Which one of the following is a polyphagous pest?

0 points

Termite

Mango hopper

Mango nut weevil

Rice stem borer

Clear selection

Entry of the pollen tube through micropyle is known as?

0 points

Mesogamy

Microgamy

Porogamy

Chalazogamy

Clear selection

In germination test, what is the minimum number of replication as per ISTA?

0 points

Clear selection

Which of the following is ssDNA plant virus

0 points

Cauliflower mosaic virus

Banana bunchy top virus

Bacilliform DNA virus

Rice dwarf virus

Clear selection

Grey mould of chick-pea is caused by

0 points

Grey mould of chick-pea is caused by

Ascochyta rabiei

Botrytis cinerea

Sclerotinia sclerotiorum

Clear selection

Which of the following comes under nutria-cereals?

0 points

rice

Wheat

Maize

Millets

Clear selection

100. Which of the following is a surface fibre?

0 points

Jute

Cotton

Flax

Sisal

Clear selection

Staggered sowing is practiced for?

0 points

good field establishment

uniform flowering

Option 3

easy harvesting

Clear selection

What is the primary acceptor of CO2 in Hatch-Slack cycle?

0 points

Phosphoenol pyruvic acid

Ribulose biphosphate

Phosphoglyceric acid

Diphosphoglyceric acid

Clear selection

The epidermal hair on the stem are referred to as?

0 points

epiblema

trichomes

periderm

endarch

Clear selection

The enzyme reverse transcriptase was discovered by?

0 points

Watson and Crick

Kary Mullis

Gilber

Temin and Baltimore

Clear selection

Soybean rust is caused by?

0 points

Puccinia glycines

Puccinia graminis

Phakospora pachyrokiz

Macrophomina phaseolina

Clear selection

The isolation distance to be maintained for retaining the genetic purity ofparental lines of maize hybrids while producing foundation seed is?

0 points

400 meters

1000 meters

100 meters

200 meters

Clear selection

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

0 points

(1) zygote

(2) synergids or antipodals in an embryo sac

(3) nucleus and integuments

(4) accessory embryo sacs in the ovule

Clear selection

Pore-size of filter used for laminar flow air chamber is?

0 points

(1) 0.30 um

(2) 1.25 um

(3) 1.75 um

(4) 2.00 um

Clear selection

The technology that prevents farmers from harvesting a crop by savingseed from the current year's crop to plant the next season's crop is termed as

0 points

(1) Apomixis technology

(2) Synthetic technology

(3) Transgenic technology

(4) Terminator technology

Clear selection

A cell contains 40 chromatids at the beginning of meiosis.After thecompletion of meiosis, the cells would contain?

0 points

(1) 20 chromosomes

(2) 10 chromosomes

(3) 40 chromos omes

(4) 80 chromosome

Clear selection

If the mRNA (AUG CUA GCU AAA UAA) is translated into protein, howmany amino acids would it contain?

0 points

(1) 2

(2) 3

(3) 4

(4) 5

Clear selection

The uredia are arranged in rows on leaves in?

0 points

(1) black rust of wheat

(2) brown rust of wheat

(3) yellow rust of wheat

(4) rust of pea

Clear selection

Ecdysone is a/an?

0 points

(1) chemo-sterilant

(2) pheromones

(3) repellents

(4) insect growth regulator

Clear selection

Which order of insects is commonly used as a biological control agent?

0 points

(1) Coleoptera

(2) Hemiptera

(3) Diptera

(4) Hymenoptera

Clear selection

Which of the following is a systemic fungicide?

0 points

1) Zineb

(2) Mancozeb

(3) Thiram

(4) Carbendazim

Clear selection

The concentration of copper sulphate in 2:2:200 Bordeaux mixture is?

0 points

(1) 1.0%

(2) 1.2%

(3) 0.8%

(4) 1.4%

Clear selection

Genetic purity of nucleus seed is?

0 points

(1) 99%

(2) 98

(3) 99.5%

(4) 100%

Clear selection

Which bacteria converts nitrite into nitrate form?

0 points

(1) Nitrosomonas

(2) Nitrosococcous

(3) Nitrobacter

(4) Rhizobium

Clear selection

If a male sterile line is crossed with heterozygous male fertile plant and theprogeny segregated as 1:1 male fertile and male sterile plants, respectively thenthe male sterility is termed as

0 points

(1) cytoplasmic male sterility

(2) Genetic male sterility

(3) cytoplasmic genic male sterility

(4) environment sensitive male sterilit

Clear selection

Apomictic seed is seed produced?

0 points

(1) by fertilization

(2) by vegetative nuclei

(3) without fertilization

(4) produced inside thalamus

Clear selection

Anthropochory is?

0 points

(1) wind dispersal of pathogens

(2) human dispersal of pathogens

(3) water dispersal of pathogens

(4) insect dispersal of pathogens

Clear selection

Centre of origin of pigeon pea is?

0 points

(1) the Mediterran ean centre

(2) the Chinese centre

(3) the South American centre

(4) Peninsular India

Clear selection

Multi Parent Advanced Generation Intercross Population (MAGIC)generally requires how many members in crossing?

0 points

(1) 100 parents

(2) 8 parents

(3) 2 parents

(4) All members of minicore

Clear selection

ldentify the best suited stage of cell division for in situ hybridization inspecies where chromosome length is very short (eg. pulses)?

0 points

(1) Metaphase

(2) Pachytene

(3) Telophase

(4) Diakinesis

Clear selection

Cephaleuros species cause?

0 points

(1) White rust

(2) Yellow rust

(3) Black rust

(4) Red rust

Clear selection

Vit B1 is also known as?

0 points

Thiamine

Riboflavin

Niacin

Biotin

Clear selection

Which of the following is present in a prokaryotic cell?

0 points

(1) Nucleoid

(2) Nuclear membrane

(3) Mitochondria

(4) 80 S ribosomes

Clear selection

The phenomenon of wobble hypothesis DOES NOT comply with whichone of the following?

0 points

(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

Clear selection

Triticale is a man-made cereal produced by crossing?

0 points

(1) T. aestivum x Secale cereal

(2) T. monococcum x T. speltoides

(3) T. bacticumx x T. turgidum

(4) Einkom x Emmer

Clear selection

Pollination by bats is found in?

0 points

(1) Rafflesia

(2) Colocasia

(3) Anthocephalus

(4) Ceratophyllum

Clear selection

Vertical resistance is also known as?

0 points

(1) Partial resistance

(2) Field resistance

(3) Dilatory resistance

(4) Major gene resistance

Clear selection

Which variety of pigeon pea was used for whole genome sequencing?

0 points

(1) Pusa 992

(2) BSMR 736

(3) TJT 501

(4) Asha

Clear selection

Pahala blight of sugarcane is caused due to deficiency of?

0 points

(1) Mn

(2) Mo

(3) Cu

(4) S

Clear selection

Which of the following is a pleomorphic fungus?

0 points

(1) Sclerospora

(2) Erysiphe

(3) Ustilago

(4) Puccinia

Clear selection

L-DOPA, useful as a drug for Parkinson's disease has been isolatedfrom?

0 points

(1) Coptis japonica

(2) Thalictrum spp.

(3) Phellodendron amurense

(4) Vina faba

Clear selection

Root nodules contain?

0 points

(1) haploid cells

(2) diploid cells

(3) triploid cells

(4) tetraploid cells

Clear selection

French bean seeds are produced by?

0 points

(1) self-pollination

(2) often cross polination

(3) cross pollination

(4) self-incompatibility

Clear selection

The appendages on cleis tothecium are coiled in the genus?

0 points

(1) Erysiphe

(2) Phyllactinia

(3) Microsphaera

(4) Uncinula

Clear selection

Phenomenon of transduction in bacteria was discovered by?

0 points

(1) Griffith

(2) Tatum

(3) Lederberg

(4) Zinder& Lederberg

Clear selection

The cell organelles that act as factories which translate the geneticinformation from nucleus into usable protein molecules is?

0 points

(1) mRNA

(2) endoplasmic reticulum

(3) ribosomes

(4) vesicles

Clear selection

Inner integument of the seed is called?

0 points

(1) Testa

(2) Micropyle

(3) Tegmen

(4) Epithelium

Clear selection

In which kingdom is Oomycota included?

0 points

(1) Fungi

(2) Chromista

(3) Protozoa

(4) Protista

Clear selection

The first enzyme to be purified and crystallized was?

0 points

(1) urease

(2) diastase

(3) insulin

(4) Zymase

Clear selection

0 points

(1) Ascospore

(2) Basidiospore

(3) Oospore

(4) Chlamydospore

Clear selection

The apomixis that occurs commonly in Citrus species is

0 points

(1) Gametophytic apomixis

(2) Sprophytic apomixis

(3) Diplospony

(4) Apogamy

Clear selection

In cereals, phytin is stored in?

0 points

(1) Endosperm

(2) Scutellum

(3) Embryo

(4)Aleuron layer

Clear selection

Which of the following is NOT a physiological disease?

0 points

(1) Black heart of potato

(2) Tip burn of paddy

(3) Dieback of linseed

(4) Marsh spot of peas

Clear selection

Which stain is generally used for staining mitochondria?

0 points

(1) Acetocarmine

(2) Acetoorcein

(3) Potassium iodide

(4) Janus green B

Clear selection

The fungi in which parasitic habit is weakly developed is called?

0 points

(1) Perthotrophs

(2) Facultative parasites

(3) Necrotrophs

(4) Facultative saprophytes

Clear selection

0 Seven characters of Mendel's experiment were located on how manychromosomes?

0 points

(1) 7

(2) 4

(3) 5

(4) 6

Clear selection

The classical work of Beadle and Tatum on Neurospera carsa hasproved that?

0 points

(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

Clear selection

The tendency of genes to remain together in the same gamete duringsegregation and not show independent segregation is found in

0 points

(1) QTLS

(2) Epistatic genes

(3) Linked genes

(4) Multiple alleles

Clear selection

Scientific name of pulse beetle is?

0 points

(1) Tribolium castaneum

(2) Rhizopertha dominica

(3) Callosobruchus chineusi

(4) Plodia interpunctella

Clear selection

In a self-pollinated crop variety, if a mechanical mixture was causedduring threshing, then which breeding method would you adopt to purifythe variety

0 points

(1) Recurrent selection

(2) Bulk selection

(3) Mass selection

(4) Pure line selection

Clear selection

Which plant is used for making cricket bat?

0 points

(1) Morus

(2) Salix

(3) Adina

(4) Juglans

Clear selection

Nonsense codon opal is?

0 points

(1) UGA

(2) UAG

(3) UAA

(4) AUU

Clear selection

The three-nucleotide combination, adenine-uracil-guanine codes for?

0 points

(1) Methionine

(2) Leucine

(3) Alanine

(4) Guanine

Clear selection

Histone proteins found in the nucleus are rich in?

0 points

(1) Lysine and arginine

(2) Lysine and threon ine

(3) Arginine and threonine

(4) Methionine and threonine

Clear selection

Which of the following is a soft fibre?

0 points

(1) Jute

(2) Cotton

(3) Sisal

(4) Manilla hemp

Clear selection

In butterflies and moths, the sex determination system is?

0 points

(1) XX-XY, heterogametic male

(2) XX-XO, heterogametic male

(3) ZW-ZZ, heterogametic female

(4) ZO-ZZ, heterogametic female

Clear selection

Agrilives.com

Submit

Clear form

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms