Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 B.Sc Agriculture q - exam paper

MULTIPLE QUESTIONS FOR COMPETITIVE EXAM

(B.Sc. Agriculture)

The sub division ends with

(A) Mycetes (B) ales (C) mycetidae (D) mycotina

Acervuli formed in order

(A) Moniliales (B) Mycelia sterile (C) Melanconiales (D) Sphaeropsidales

Fungal pathogen cause vascular wilt is survive in soil in the form of

(A) Oospore (B)Chlamydospore (C) Sclerotia (D) Conidia

Mottle leaf of citrus is due to deficiency of

(A) Zinc (B) Iron (C) Boron (D) Calcium

Ascus normally contains definite number of ascospores which is

(A) Four (B)Six (C) Eight (D) Two

Loose smut of wheat can be controlled by seed treatment with

(A) Vitavax (B) Agallol (C) Thiram (D) Captan

Emisan is a

(A) Copper fungicide (B)Organomercurial (C) Sulphur fungicide (D) None of above

Indian Phytopathological Society was started by

(A) B.B.Mundkur (B)K.C.Mehta (C) J.F.dastur (D) S.L.Ajrekar

The abnormal increase in the size of plant organ is known as

(A)Hyperplasia (B)Hypertrophy (C)Both A & B (D) Atrophy

The term necrosis indicate

(A)Death of cell (B)Curling (C) Blightening (D)Atrophy

Hyphal structures sent in to the host cell by different fungi to absorb the nutrients are known as

(A)Appressoria (B) Rhizomorph(C)Haustoria (D)Sclerotia

Systemic infection of Albugo candida in crucifers results in to

(A)Rotting (B) Gummosis(C)Blight (D)Hypertrophy

Fungicides which are absorbed in to the system of the plant and move to the remote site of infection are known as

(A) Systematic (B) Fungistatic (C) Systemic (D) Dressers

Which pathogen caused heavy losses to wine industry in France due to its epidemics in 1875

(A)Phytophthora infestans (B) Helminthosporium oryzae

(C) Plasmopara viticola (D) Uncinula necator

Sclerotia of ergot can be removed from the seed by floating them on

(A)Salt solution (B) Glycerol(C)Mustard oil (D)Kerosine

Mycoplasma like organism as plant pathogen for the first time in 1967 by

(A)Bawden (B) Doi et al.(C) Smith (D) Ivanowski

The discovery of _______ mosaic by Mayer in 1886 was the beginning of studies on viruses as incitants of diseases in plants.

(A) Tomato(B)Mungbean (C)Soybean (D)Tobacco

Dr.K.C.Mehta made an outstanding contribution to Plant Pathology by discovering the disease cycle in India

(A) Cereal rust(B)Smuts (C)Wilts (D)Blights

Paddy blast is effectively controlled by spraying of

(A) Edifenphos(B)Chlorothalonil (C) Mancozeb(D)Metalaxyl

Solar energy treatment of wheat seed is recommended for the control of

(A)Karnal bunt (B)Loose smut (C) Hill bunt(D) Earcockle