Sericulture Extension Officer • 2018 • Paper-III
Which is not a sucking pest?
A)
White fly
B)
Thrips
C)
Mealy bug
D)
Leaf roller
Leaf rollers are chewing/rolling pests; the other three suck plant sap.
Sericulture Extension Officer • 2018 • Paper-III
Bavistin is a
A)
Pesticide
B)
Bio-fertilizer
C)
Bio-control agent
D)
Fungicide
Bavistin is a formulation of carbendazim, a fungicide.
Sericulture Extension Officer • 2018 • Paper-III
Stem canker is caused by
A)
Bacteria
B)
Fungus
C)
Pest
D)
Nematode
Stem canker in this context is a fungal disease.
Sericulture Extension Officer • 2018 • Paper-III
What is the exact value of x? (1) 4 < 2x < 13 (2) x^2 = 25
A)
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked
B)
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked
C)
BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient
D)
Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data are needed
Statement 1 gives 2<x<6.5; statement 2 gives x=±5. Together only x=5 satisfies statement 1, so together are sufficient.
Sericulture Extension Officer • 2018 • Paper-III
Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?
A)
85
B)
97
C)
109
D)
178
Alternate operations ÷2, +8: 170÷2=85.
Sericulture Extension Officer • 2018 • Paper-III
Look at this series: 153, 153, 140, 140, 127, 127, ... What number should come next?
A)
12
B)
114
C)
27
D)
53
Each number is repeated, then reduced by 13: 127−13=114.
Sericulture Extension Officer • 2018 • Paper-III
Pebrine is also known as
A)
Microsporidian diseases
B)
Bacterial diseases
C)
Bm NPV
D)
Sotto disease
Pebrine is a microsporidian disease caused by Nosema species.
Sericulture Extension Officer • 2018 • Paper-III
The route of infection for Grasserie disease
A)
Sub cutaneous
B)
Wound
C)
Per oral
D)
Transovum transmission
Grasserie/NPV typically enters through the mouth with contaminated feed.
Sericulture Extension Officer • 2018 • Paper-III
Vijetha is a
A)
General disinfectant
B)
Bed disinfectant
C)
Insecticide
D)
Pesticide
Vijetha is used as a bed disinfectant in sericulture.
Sericulture Extension Officer • 2018 • Paper-III
Which of the following words is the odd one out?
A)
Marigold
B)
Ferns
C)
Lotus
D)
Rose
Ferns are not flowering plants; marigold, lotus and rose are flowering plants.
Sericulture Extension Officer • 2018 • Paper-III
Which is not a pest of mulberry?
A)
Leaf roller
B)
Cutworm
C)
Thrips
D)
Dermestid beetle
Cutworms are not among the standard major mulberry pests in this question set.
Sericulture Extension Officer • 2018 • Paper-III
Symptoms of Leaf Rust
A)
White powdery patches on the lower surface of mulberry leaves
B)
Small brownish irregular spots
C)
Pin-head sized circular to oval, brownish eruptive lesions
D)
Leaf marginal browning or blackening of leaves
Rust produces small eruptive brownish lesions on the lower surface.
Sericulture Extension Officer • 2018 • Paper-III
Leaf rust in Som can be reduced by foliar spray of
A)
1.0% Dithane M-45
B)
1.0% Bordeaux
C)
1.5% Nuvan
D)
1.0% Captan
Dithane M-45 is a fungicide used as a foliar spray against rust.
Sericulture Extension Officer • 2018 • Paper-III
Mulberry root knot diseases can be controlled by applying
A)
Dithane M-45
B)
Bavistin
C)
Carbofuron
D)
None of these
Carbofuran is used as a nematicide against root-knot nematodes.
Sericulture Extension Officer • 2018 • Paper-III
Disease free and quality silkworm eggs are produced in large quantities in
A)
Breeding station
B)
Breeding centre
C)
Hatcheries
D)
Grainage
Grainages produce and process disease-free silkworm seed.
Sericulture Extension Officer • 2018 • Paper-III
Look carefully for the pattern, and then choose which pair of numbers comes next.
45, 38, 5, 41, 34, 5, 37, 30,
A)
11, 5
B)
10, 42
C)
5, 38
D)
5, 33
The sequence is 45,38,5; 41,34,5; 37,30,5, so the next pair is 5,38.
Sericulture Extension Officer • 2018 • Paper-III
Look at this series: 7, 8, 18, 57, __, 1165, ... What number should fill the blank?
A)
174
B)
232
C)
224
D)
228
The pattern is ×1+1, ×2+2, ×3+3, ×4+4, ×5+5: 57×4+4=232, then 232×5+5=1165. Thus the blank is 232.
Sericulture Extension Officer • 2018 • Paper-III
Symptoms of Pebrine disease
A)
Black pepper- like spots
B)
Hard and stiff body
C)
Head appears hook shaped
D)
Shrinkage of abdominal segment
Pebrine causes characteristic pepper-like black spots due to spores.
Sericulture Extension Officer • 2018 • Paper-III
Sotto disease is caused by
A)
Aspergillosis
B)
Bacillus thurengiensis
C)
Streptococci bacteria
D)
Baculo virus
Sotto disease is caused by Bacillus thuringiensis.
Sericulture Extension Officer • 2018 • Paper-III
A bleaching powder with_________chlorine content is suitable for disinfection in Sericulture
A)
0.3%
B)
0.2-0.3%
C)
0.5%
D)
0.3-0.6%
This concentration range is suitable for sericulture disinfection.
Sericulture Extension Officer • 2018 • Paper-III
Powdery mildew diseases reduces leaf yield up to
A)
20%
B)
37-45%
C)
10-15%
D)
15-25%
Severe mulberry powdery mildew can substantially reduce leaf yield, commonly cited around this range.
Sericulture Extension Officer • 2018 • Paper-III
Aphids can be controlled by
A)
Spraying of 0.2% Roger
B)
Dusting 5% Aldrin
C)
Spraying 0.05% Monocrotophos
D)
Dusting spike with 1.5% quinlphos
Dimethoate/Rogor is an insecticide used against aphids.
Sericulture Extension Officer • 2018 • Paper-III
The silkworm seed should be absolutely free from
A)
Grasserie disease
B)
Flacherie disease
C)
Muscardine disease
D)
Pebrine disease
Pebrine is vertically transmitted and seed stocks must be certified free of it.
Sericulture Extension Officer • 2018 • Paper-III
Intra-veinal chlorosis of older leaves of Mulberry is caused by deficiency of
A)
Zinc
B)
Magnesium
C)
CO
D)
Phosphorus
Magnesium is mobile; deficiency appears first on older leaves as interveinal chlorosis.
Sericulture Extension Officer • 2018 • Paper-III
Which one is a soil borne disease
A)
Root rot
B)
Leaf blight
C)
Seedling blight
D)
Stem rot
Root rot is classically a soil-borne disease.
