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
Posted Date:-2021-08-24 13:29:05
Irish famine was caused due to:
1.Wheat rust
2.Apple scab
3.Late blight of potato
4.Tomato wilt
Posted Date:-2021-08-24 13:29:05
Levillula is a:
1.Ectoparasitic
2.Endoparasitic
3.Both (a) & (b)
4.None of the above
Posted Date:-2021-08-24 13:29:05
Mycology is the study of: A. B. C. D.
1.Bacteria
2.Algae
3.Virus
4.Fungi
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Phycomycetes belong to:
1.Fungi
2.Bacteria
3.Yeast
4.None of the above
Posted Date:-2021-08-24 13:29:05
Plant overgrowth due to increase in size of cell of the tissue:
1.Hypoplasia
2.Hypertrophy
3.Hyperplasia
4.All of the above
Posted Date:-2021-08-24 13:29:05
Powdery mildews are controlled by spray of:
1.Copper fungicides
2.Mercury fungicides
3.Sulphur fungicides
4.Miscellaneous fungicides
Posted Date:-2021-08-24 13:29:05
Root knot of vegetable is caused by:
1.Meloidogyne
2.Heterodera
3.Pratylenchus
4.Xanthomonas
Posted Date:-2021-08-24 13:29:05
Root rot of papaya could be controlled by application of:
1.Bordeaux mixture
2.Dithane M-45
3.Benelate
4.Calaxin
Posted Date:-2021-08-24 13:29:05
Rust teleutospore on germination produce:
1.Four basidiospores
2.Two basidiospores
3.Indefinite basidiospores
4.None of these
Posted Date:-2021-08-24 13:29:05
Secondary spread of ergot of bajra is through:
1.Seed
2.Air
3.Insect
4.Both (a) and c
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Smut gives the appearance of:
1.Compact hardness
2.Sooty powder
3.Superficial growth
4.Dusty layer
Posted Date:-2021-08-24 13:29:05
Acervuli is _____ shaped:
1.Round
2.Saucer
3.Oblate
4.Conical
Posted Date:-2021-08-24 13:29:05
Choose the wrong combination:
1.Esso fungicide = Copper oxychloride
2.Ziram = Cuman
3.Thiram = Hexathir
4.Zineb = Kitazin
Posted Date:-2021-08-24 13:29:05
Hemittodet penetrate in plant tissues with the aid of:
1.Stylet
2.Saliva
3.Labial papilla
4.Cervicial
Posted Date:-2021-08-24 13:29:05
Leaf roll of potato is caused by:
1.Fungus
2.Bacterium
3.Virus
4.Mycoplasm
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Micro organisms were first observed by:
1.John Tyndall
2.L.J. Thernard
3.Antony Van Leeuwenhock
4.Louis Pasteur
Posted Date:-2021-08-24 13:29:05
Most effective fungicide against powdery mildew disease:
1.Dithane
2.Captan
3.Karathane
4.Bavistin
Posted Date:-2021-08-24 13:29:05
Most of the plant parasitic nematodes belong to order:
1.Tylenchida
2.Dorylaimida
3.Aphelenchida
4.Rhabditida
Posted Date:-2021-08-24 13:29:05
Mycoplasma disease of plant was first reported by:
1.Butler
2.Brefeld
3.Anton de Barry
4.Doi et al. and Ishire et al.
Posted Date:-2021-08-24 13:29:05
Mycoplasma is sensitive to:
1.Pencillin
2.Steptomycin
3.Bavistin
4.Tetracycline
Posted Date:-2021-08-24 13:29:05
Nematode genus Hoplolaimus Daday was first recorded in _____ from an island in the Paraguay river:
1.1900
2.1905
3.1910
4.1915
Posted Date:-2021-08-24 13:29:05
Phyllactinis causes the disease:
1.Powdery mildew
2.Downy mildew
3.Leaf spot
4.Blight
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Powdery mildew fungi belong to the family:
1.Erysiphaceae
2.Hypocereaceae
3.Hypomycetaceae
4.Nectriaceae
Posted Date:-2021-08-24 13:29:05
Pythium belongs to class:
1.Chytridiomycetes
2.Oomycetes
3.Zygomycetes
4.Hypochytridiomycetes
Posted Date:-2021-08-24 13:29:05
Rhizopus belongs to class:
1.Oomycetes
2.Zygomycetes
3.Trichomycetes
4.Ascomycetes
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Species Plantarum is the greatest contribution of:
1.Linnaeus
2.P.A. Micheli
3.Saccardo
4.Anton de Bary
Posted Date:-2021-08-24 13:29:05
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.
Posted Date:-2021-08-24 13:29:05
The symptom of red rot of sugarcane mostly found on:
1.Stem
2.Root
3.Leaf
4.Arrow
Posted Date:-2021-08-24 13:29:05
Wilt of arhar is caused by:
1.Verticillium
2.Fusarium
3.Xanthomonas
4.Meloidogyne
Posted Date:-2021-08-24 13:29:05
Yellow ear rot of wheat is caused by:
1.Anguina
2.Corynebacterum
3.Both (a) & (b)
4.Heterodera
Posted Date:-2021-08-24 13:29:05
Yellow pigment in the culture is produced by:
1.Pseudomonas
2.Xanthomononas
3.Erwinia
4.Agrobacterium
Posted Date:-2021-08-24 13:29:05
Anthracnose of Grape is also known as:
1.Bird s-eye disease
2.Buck eye rot
3.Black spot
4.Both (a) & (c)
Posted Date:-2021-08-24 13:29:05
Late blight of potato is caused by:
1.Alternaria solani
2.Xanthomonas campestris pv. Citrii
3.Phytophthora infestans
4.Sychytriu endobioticum
Posted Date:-2021-08-24 13:29:05
Leaf roll of potato is transmitted by:
1.M. persicae
2.M. pseudosolani
3.M. circumflexum
4.All above
Posted Date:-2021-08-24 13:29:05
Lichen is an association between:
1.Algae and Fungus
2.Bacterium and Fungus
3.Fungus and Virus
4. Fungus and Nematode
Posted Date:-2021-08-24 13:29:05
Linseed rust is caused by:
1.Uromyces
2.Melampsora lini
3.Physaqmidium
4.Ravenelia
Posted Date:-2021-08-24 13:29:05
Loose smut of wheat is a disease known as:
1.Internally seed borne
2.Externally seed borne
3.Air borne
4.Soil borne
Posted Date:-2021-08-24 13:29:05
Meloidogyne belongs to group of:
1.Ecotoparasite
2.Endoparasite
3.Semi-ectoparasite
4.Semi-endoparasite
Posted Date:-2021-08-24 13:29:05
Microbiology is the science of which we study: A. B. C. D.
1.Viruses
2.Bacteria
3.Fungi
4.All above
Posted Date:-2021-08-24 13:29:05
Modification of floral parts into leafy structures by pathogenic infection called:
1.Hyperplasia
2.Hypertrophy
3.Phyllody
4.Witch s broom
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Phytophthera belongs to family:
1.Peronophythoraceae
2.Pythiaceae
3.Pareonosporaceae
4.Albuginaceae
Posted Date:-2021-08-24 13:29:05
Plant overgrowth due to increase in size of cell of the tissue:
1.Hypoplasia
2.Hypertrophy
3.Hyperplasia
4.All of the above
Posted Date:-2021-08-24 13:29:05
Plant parasitic nematodes posses:
1.Two part oesophagus
2.Three part oesophagus
3.Four part oesophagus
4.None of the above
Posted Date:-2021-08-24 13:29:05
Powdery mildew disease is caused by:
1.Bacterium
2.Fungus
3.Virus
4.Nematode
Posted Date:-2021-08-24 13:29:05
Primary source of infection to green ear disease of bajra is:
1.Insect
2.Soil
3.Air
4.Seed and soil
Posted Date:-2021-08-24 13:29:05
Pycnidia are formed in order:
1.Moniliales
2.Melanoconiales
3.Sphaeropsidales
4.All of the above
Posted Date:-2021-08-24 13:29:05
Radophyceae is also known as:
1.Red algae
2.Green algae
3.Blue-gree algae
4.None of these
Posted Date:-2021-08-24 13:29:05
Red rot of sugarcane is caused by:
1.Fusarium
2.Alternaria
3.Dreschlera
4.Colletotrichum
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Root parasite of bajra is:
1.Cuscuta
2.Striga
3.Orobanche
4.Loranthus
Posted Date:-2021-08-24 13:29:05
Rust belongs to sub-division:
1.Zygomycotina
2.Ascomycotina
3.Basidiomycotina
4.Deuteromycotina
Posted Date:-2021-08-24 13:29:05
Severity of disease club root of cabbage can be reduced by application of:
1.Lime
2.Gypsum
3.FYM
4.Fertilizers
Posted Date:-2021-08-24 13:29:05
Shape of bacterial cells is:
1.Spheres
2.Spiral
3.Rods
4.All of the above
Posted Date:-2021-08-24 13:29:05
Smut of wheat is effectively controlled by:
1.Bavistin
2.Vitavax
3.Benelate
4.Thiram
Posted Date:-2021-08-24 13:29:05
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
Posted Date:-2021-08-24 13:29:05
Sporangium on germination produce vesicle in genera:
1.Phytophyhora
2.Pythium
3.Sclerospora
4.Personospora
Posted Date:-2021-08-24 13:29:05
Stipe disease of barley is caused by:
1.Drechalera gramineum
2.Drechalera oryzae
3.Puccinia striiformis
4.None of the above
Posted Date:-2021-08-24 13:29:05
Striga is plant parasite included in:
1.Fungi
2.Mycoplasma like organisms
3.Phanerogamic plant parasites
4.Bacteria
Posted Date:-2021-08-24 13:29:05
Sugar beet cyst nematode was reported by:
1.Needham
2.Cobb
3.Schacht
4.Smith
Posted Date:-2021-08-24 13:29:05
Systemic fungicides was discovered by:
1.Van Schleming and Kulka
2.Millardet
3.Tillet
4.Prevost
Posted Date:-2021-08-24 13:29:05
With Phase is common in:
1.Blast of Paddy
2.Bacteria blight of Paddy
3.White rust of Crucifers
4. Red rot of Sugarcane
Posted Date:-2021-08-24 13:29:05
With regard to nutrition Erysiphe is:
1.Ectoparasite
2.Endoparasite
3.None of the above
4.Predator
Posted Date:-2021-08-24 13:29:05