Sericulture Extension Officer • 2018 • Paper-III
Lalropuii drives 10 km. towards South, takes a right turn and drives 6 km. She then takes another right turn, drives 10 km. and stops. How far is she from the starting point?
A)
16 km.
B)
6 km.
C)
4 km.
D)
None of these
After south 10, east 6, north 10 she is 6 km from the start.
Sericulture Extension Officer • 2018 • Paper-III
The population density of which control measures should be initiated against an increasing pest population to prevent economic damage is called
A)
Economic threshold level
B)
Economic injury level
C)
Damage boundary
D)
Level of damage
ETL is the pest density at which control measures should start to prevent economic loss.
Sericulture Extension Officer • 2018 • Paper-III
The scientific name of mulberry pest Bihar hairy caterpillar is
A)
Spilosoma oblique
B)
Diaphania pulverulentalis
C)
Pseudodendrothrips mori
D)
Agonoscellis nubile
The Bihar hairy caterpillar is Spilosoma obliqua.
Sericulture Extension Officer • 2018 • Paper-III
Select the pair which has the same relationship as LIGHT: BLIND
A)
Speech: dumb
B)
Language: deaf
C)
Tongue: sound
D)
Voice: vibration
Light relates to blindness as speech relates to dumbness (loss/absence of the function).
Sericulture Extension Officer • 2018 • Paper-III
College is related to Student in a same way as ‘Hospital’ is related to
A)
Doctor
B)
Nurse
C)
Patient
D)
Medicine
A college serves students; a hospital serves patients.
Sericulture Extension Officer • 2018 • Paper-III
Which digit will appear on the face opposite to the face with number 4? (Given faces: 2, 6, 3, 3, 1, 5)
A)
3
B)
5
C)
6
D)
2
In the given cube representation, the face opposite 4 is 5.
Sericulture Extension Officer • 2018 • Paper-III
Cultural method adopted for management of White fly in Mulberry garden is
A)
Fixing yellow sticky trap
B)
Light trap
C)
Sprinkler irrigation
D)
Pheromone trap
Yellow sticky traps are a standard monitoring/suppression method for whitefly.
Sericulture Extension Officer • 2018 • Paper-III
Surface sterilization of DFLs means
A)
Treating the silkworm eggs with formalin
B)
Cleaning the tray
C)
Bed cleaning
D)
Disinfecting the rearing house
Surface sterilization refers to disinfecting the egg surface.
Sericulture Extension Officer • 2018 • Paper-III
Tukra is caused by
A)
Meconellicoccus hirsutus
B)
White fly
C)
Nematode
D)
Bihar hairy caterpillar
Tukra disease of mulberry is caused by the mealybug M. hirsutus.
Sericulture Extension Officer • 2018 • Paper-III
What should come in the place of question mark (?) in the number series given below?
35, 44, 62, 89, 125, ?
A)
170
B)
140
C)
153
D)
None of these
Differences are +9,+18,+27,+36; next +45 gives 170.
Sericulture Extension Officer • 2018 • Paper-III
Dimethoate is a chemical used to control
A)
Pest
B)
Fungal disease
C)
Bacterial disease
D)
Stem borer
Dimethoate is an insecticide/acaricide.
Sericulture Extension Officer • 2018 • Paper-III
Bacterial diseases known as empty gut disease in Oak tasar silkworm was caused by
A)
Aspergillus flavus
B)
Streptococcus pernyi
C)
Blepheripa sugan
D)
Apantales rificus
This bacterial disease is attributed to Streptococcus pernyi.
Sericulture Extension Officer • 2018 • Paper-III
Most popular foliar disease is
A)
Fusarial wilt
B)
Sooty mould
C)
Powdery mildew
D)
All of these
Powdery mildew is a common foliar disease.
Sericulture Extension Officer • 2018 • Paper-III
Slow and weak growth of Mulberry with less branching is an indication of the deficiency of
A)
Glucose
B)
Copper
C)
Nitrogen
D)
Chlorine
Nitrogen deficiency causes weak growth and reduced branching.
Sericulture Extension Officer • 2018 • Paper-III
Bacterial diseases in Silkworm
A)
Densonucleosis
B)
Infectious Flacherie
C)
Aspergillosis
D)
Black thorax septicemia
Infectious flacherie is bacterial.
Sericulture Extension Officer • 2018 • Paper-III
Sap-sucking insects of Oak tree
A)
Aphids, Beetles, Weevils, Scales
B)
Butterflies, Weevils, Aphids, Leaf hopper
C)
Leaf hopper, Aphids, White flies, Scales
D)
Stem borer, White flies, Scales, Butterflies
All listed are sap-sucking insects.
Sericulture Extension Officer • 2018 • Paper-III
A man travels 4 km due North, then travels 6 km due East and further travels 4 km due North. How far is he from the starting point?
A)
6 km
B)
14 km
C)
8 km
D)
10 km
Net displacement is 8 km north and 6 km east: √(64+36)=10.
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.
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
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
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
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
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
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
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.
