Agriculture-Agriculture Plant Pathology Set/2 Sample Test,Sample questions

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Question: 
  In which rust pustules are arranged in end-to-end manner and forming strip?

1.Yellow rust

2.Orange rust

3.Black rust

4.White rust

Question: 
  Irish famine was caused due to:

1.Wheat rust

2.Apple scab

3.Late blight of potato

4.Tomato wilt

Question: 
  Levillula is a:

1.Ectoparasitic

2.Endoparasitic

3.Both (a) & (b)

4.None of the above

Question: 
  Mycology is the study of: A.  B.  C.  D.

1.Bacteria

2.Algae

3.Virus

4.Fungi

Question: 
  Once the pathogen has established in an area  steps taken to remove or destroy is known as:

1.Exclusion

2.Eradication

3.Protection

4.Management

Question: 
  Phycomycetes belong to:

1.Fungi

2.Bacteria

3.Yeast

4.None of the above

Question: 
  Plant overgrowth due to increase in size of cell of the tissue:

1.Hypoplasia

2.Hypertrophy

3.Hyperplasia

4.All of the above

Question: 
  Powdery mildews are controlled by spray of:

1.Copper fungicides

2.Mercury fungicides

3.Sulphur fungicides

4.Miscellaneous fungicides

Question: 
  Root knot of vegetable is caused by:

1.Meloidogyne

2.Heterodera

3.Pratylenchus

4.Xanthomonas

Question: 
  Root rot of papaya could be controlled by application of:

1.Bordeaux mixture

2.Dithane M-45

3.Benelate

4.Calaxin

Question: 
  Rust teleutospore on germination produce:

1.Four basidiospores

2.Two basidiospores

3.Indefinite basidiospores

4.None of these

Question: 
  Secondary spread of ergot of bajra is through:

1.Seed

2.Air

3.Insect

4.Both (a) and c

Question: 
  Sexual dimorphism means:

1.Males and Females are separate

2.Males and Females are morphologically dissimilar

3.Female posses didelphic ovaries

4.None of the above

Question: 
  Smut gives the appearance of:

1.Compact hardness

2.Sooty powder

3.Superficial growth

4.Dusty layer

Question: 
 Acervuli is _____ shaped:

1.Round

2.Saucer

3.Oblate

4.Conical

Question: 
 Choose the wrong combination:

1.Esso fungicide = Copper oxychloride

2.Ziram = Cuman

3.Thiram = Hexathir

4.Zineb = Kitazin

Question: 
 Hemittodet penetrate in plant tissues with the aid of:

1.Stylet

2.Saliva

3.Labial papilla

4.Cervicial

Question: 
 Leaf roll of potato is caused by:

1.Fungus

2.Bacterium

3.Virus

4.Mycoplasm

Question: 
 Loose smut of wheat can be effectively controlled by:

1.Crop rotation

2.Soil treatment with non-systematic fungicides

3.Seed treatment with systemic fungicides

4.Spraying the crop with fungicides

Question: 
 Micro organisms were first observed by:

1.John Tyndall

2.L.J. Thernard

3.Antony Van Leeuwenhock

4.Louis Pasteur

Question: 
 Most effective fungicide against powdery mildew disease:

1.Dithane

2.Captan

3.Karathane

4.Bavistin

Question: 
 Most of the plant parasitic nematodes belong to order:

1.Tylenchida

2.Dorylaimida

3.Aphelenchida

4.Rhabditida

Question: 
 Mycoplasma disease of plant was first reported by:

1.Butler

2.Brefeld

3.Anton de Barry

4.Doi et al. and Ishire et al.

Question: 
 Mycoplasma is sensitive to:

1.Pencillin

2.Steptomycin

3.Bavistin

4.Tetracycline

Question: 
 Nematode genus Hoplolaimus Daday was first recorded in _____ from an island in the Paraguay river:

1.1900

2.1905

3.1910

4.1915

Question: 
 Phyllactinis causes the disease:

1.Powdery mildew

2.Downy mildew

3.Leaf spot

4.Blight

Question: 
 Plant pathogenic viroids contain:

1.Externally seed-borne disease

2.Externally seed-borne and soil-borne disease

3.Air-brone disease

4.Inernally seed-borne disease

Question: 
 Powdery mildew fungi belong to the family:

1.Erysiphaceae

2.Hypocereaceae

3.Hypomycetaceae

4.Nectriaceae

Question: 
 Pythium belongs to class:

1.Chytridiomycetes

2.Oomycetes

3.Zygomycetes

4.Hypochytridiomycetes

Question: 
 Rhizopus belongs to class:

1.Oomycetes

2.Zygomycetes

3.Trichomycetes

4.Ascomycetes

Question: 
 Some ______ varieties of apple exude toxic wax on leaf surface to prevent germination of conidia of Podosphaera leucotricha:

1.Scab resistant

2.Leaf blight resistant

3.Powdery mildew resistant

4.Rust resistant

Question: 
 Species Plantarum is the greatest contribution of:

1.Linnaeus

2.P.A. Micheli

3.Saccardo

4.Anton de Bary

Question: 
 Strawbery plants infected with P. penetrans (nematode) have been successfully treated with exposure in hot water at:

1.49.4?C for 17.5 min.

2.52.8?C for 6 min.

3.54.5?C for 4 min.

4.56?C for 2 min.

Question: 
 The symptom of red rot of sugarcane mostly found on:

1.Stem

2.Root

3.Leaf

4.Arrow

Question: 
 Wilt of arhar is caused by:

1.Verticillium

2.Fusarium

3.Xanthomonas

4.Meloidogyne

Question: 
 Yellow ear rot of wheat is caused by:

1.Anguina

2.Corynebacterum

3.Both (a) & (b)

4.Heterodera

Question: 
 Yellow pigment in the culture is produced by:

1.Pseudomonas

2.Xanthomononas

3.Erwinia

4.Agrobacterium

Question: 
Anthracnose of Grape is also known as:

1.Bird s-eye disease

2.Buck eye rot

3.Black spot

4.Both (a) & (c)

Question: 
Late blight of potato is caused by:

1.Alternaria solani

2.Xanthomonas campestris pv. Citrii

3.Phytophthora infestans

4.Sychytriu endobioticum

Question: 
Leaf roll of potato is transmitted by:

1.M. persicae

2.M. pseudosolani

3.M. circumflexum

4.All above

Question: 
Lichen is an association between:

1.Algae and Fungus

2.Bacterium and Fungus

3.Fungus and Virus

4. Fungus and Nematode

Question: 
Linseed rust is caused by:

1.Uromyces

2.Melampsora lini

3.Physaqmidium

4.Ravenelia

Question: 
Loose smut of wheat is a disease known as:

1.Internally seed borne

2.Externally seed borne

3.Air borne

4.Soil borne

Question: 
Meloidogyne belongs to group of:

1.Ecotoparasite

2.Endoparasite

3.Semi-ectoparasite

4.Semi-endoparasite

Question: 
Microbiology is the science of which we study: A.  B.  C.  D.

1.Viruses

2.Bacteria

3.Fungi

4.All above

Question: 
Modification of floral parts into leafy structures by pathogenic infection called:

1.Hyperplasia

2.Hypertrophy

3.Phyllody

4.Witch s broom

Question: 
Oil from American elm seed contains 55 per cent capric acid toxic to Ceratocystis uimi the pathogen causing the famous _____ disease:

1.English elm

2.Dutch elm

3.American elm

4.French elm

Question: 
Pectinolytic enzymes of plant pathogens playa major role during pathogenesis in diseases like:

1.Rusts

2.Downy mildew

3.Wilts damping-off and root/foot rots

4.Powdery mildew

Question: 
Phytophthera belongs to family:

1.Peronophythoraceae

2.Pythiaceae

3.Pareonosporaceae

4.Albuginaceae

Question: 
Plant overgrowth due to increase in size of cell of the tissue:

1.Hypoplasia

2.Hypertrophy

3.Hyperplasia

4.All of the above

Question: 
Plant parasitic nematodes posses:

1.Two part oesophagus

2.Three part oesophagus

3.Four part oesophagus

4.None of the above

Question: 
Powdery mildew disease is caused by:

1.Bacterium

2.Fungus

3.Virus

4.Nematode

Question: 
Primary source of infection to green ear disease of bajra is:

1.Insect

2.Soil

3.Air

4.Seed and soil

Question: 
Pycnidia are formed in order:

1.Moniliales

2.Melanoconiales

3.Sphaeropsidales

4.All of the above

Question: 
Radophyceae is also known as:

1.Red algae

2.Green algae

3.Blue-gree algae

4.None of these

Question: 
Red rot of sugarcane is caused by:

1.Fusarium

2.Alternaria

3.Dreschlera

4.Colletotrichum

Question: 
Red scales of ______ (red varieties) contain protocatechuic acid and catechol which may exude in drops to resist the attack of colletotrichum circinans:

1.Garlic

2.Onion

3.Leek

4.Celery

Question: 
Root parasite of bajra is:

1.Cuscuta

2.Striga

3.Orobanche

4.Loranthus

Question: 
Rust belongs to sub-division:

1.Zygomycotina

2.Ascomycotina

3.Basidiomycotina

4.Deuteromycotina

Question: 
Severity of disease club root of cabbage can be reduced by application of:

1.Lime

2.Gypsum

3.FYM

4.Fertilizers

Question: 
Shape of bacterial cells is:

1.Spheres

2.Spiral

3.Rods

4.All of the above

Question: 
Smut of wheat is effectively controlled by:

1.Bavistin

2.Vitavax

3.Benelate

4.Thiram

Question: 
Some varieties of _____ are resistant to wilt due to the presence of hydrocyanidies (HCN) in root exudates:

1.Sunflower

2.Safflower

3.Castor

4.Linseed

Question: 
Sporangium on germination produce vesicle in genera:

1.Phytophyhora

2.Pythium

3.Sclerospora

4.Personospora

Question: 
Stipe disease of barley is caused by:

1.Drechalera gramineum

2.Drechalera oryzae

3.Puccinia striiformis

4.None of the above

Question: 
Striga is plant parasite included in:

1.Fungi

2.Mycoplasma like organisms

3.Phanerogamic plant parasites

4.Bacteria

Question: 
Sugar beet cyst nematode was reported by:

1.Needham

2.Cobb

3.Schacht

4.Smith

Question: 
Systemic fungicides was discovered by:

1.Van Schleming and Kulka

2.Millardet

3.Tillet

4.Prevost

Question: 
With Phase  is common in:

1.Blast of Paddy

2.Bacteria blight of Paddy

3.White rust of Crucifers

4. Red rot of Sugarcane

Question: 
With regard to nutrition Erysiphe is:

1.Ectoparasite

2.Endoparasite

3.None of the above

4.Predator

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