Sericulture Extension Officer • 2018 • Paper-III
The fungal infection caused by Apergillus flavus in Oak Tasar silkworm is controlled mainly by
A)
5% Sulphuric acid
B)
Hygienic management
C)
10% Hydrochloric acid
D)
Maintain low temperature and high humidity
Hygiene and environmental control are the main preventive measures.
Sericulture Extension Officer • 2018 • Paper-III
Common symptoms of Fungal diseases
A)
Mummified larvae
B)
Irregular size
C)
Translucent head and thorax
D)
Anal protrution
Fungal infection characteristically produces hard, mummified larvae.
Sericulture Extension Officer • 2018 • Paper-III
Ideal magnification required for the identification of pebrine spore
A)
400X
B)
600X
C)
100X
D)
10X
Routine identification of pebrine spores is performed under high-power microscopy around 400×.
Sericulture Extension Officer • 2018 • Paper-III
Poisonous substances entering into the silkworm through feeding, body contact etc are categorized under
A)
Chronic
B)
Infectious
C)
Non-infectious
D)
Sporadic
Poisoning is a non-infectious disorder.
Sericulture Extension Officer • 2018 • Paper-III
Indigenous hymenopterous ecto-pupal parasitoid used to kill the uzi pupa is
A)
Nesolyx thymus
B)
Dermester ater
C)
Labia arachidis
D)
Exorista bombycis
Nesolynx thymus is an indigenous hymenopterous ecto-pupal parasitoid of uzi fly pupae.
Sericulture Extension Officer • 2018 • Paper-III
Which of the following is not a bed disinfectant?
A)
Sanitech
B)
Labex
C)
Sericillin
D)
None of these
Sanitech and Labex are used as bed disinfectants in sericulture; Sericillin is not a bed disinfectant.
Sericulture Extension Officer • 2018 • Paper-III
Flacherie diseases was severe during
A)
April-July
B)
April-September
C)
November-April
D)
July-November
Warm, humid periods favor severe flacherie.
Sericulture Extension Officer • 2018 • Paper-III
Disinfection should be done__________before rearing
A)
3 days
B)
5 days
C)
2 days
D)
7 days
The standard interval in this context is about five days before rearing.
Sericulture Extension Officer • 2018 • Paper-III
Flacidity of Silkworm body is the sign of
A)
Flacherie
B)
Densonucleosis
C)
Grasserie
D)
White muscardine
Flacherie produces flaccid larvae and gut-related symptoms.
Sericulture Extension Officer • 2018 • Paper-III
A condition where bacteria multiply enormously in the blood of the larvae, pupae and moth
A)
Sotto
B)
Septicemia
C)
Polyhedral
D)
Mycosis
Septicemia is a systemic bacterial infection with bacteria multiplying in the haemolymph.
Sericulture Extension Officer • 2018 • Paper-III
The right approach to eliminate pathogens from the rearing environment is
A)
Rearing disease resistance silkworm breed
B)
Chemotherapy
C)
Practice hygienic measures
D)
Disinfection
Disinfection directly removes/reduces environmental pathogens.
Sericulture Extension Officer • 2018 • Paper-III
Cultural method for reducing Powdery mildew
A)
Timely utilization of leaves
B)
Intercropping
C)
Adoption of wider spacing
D)
All of these
Timely use, intercropping and wider spacing can all reduce disease pressure; the source key treats all as cultural measures.
Sericulture Extension Officer • 2018 • Paper-III
Predisposing factor of muscardine disease
A)
Poor quality leaves
B)
Low temperature with high humidity
C)
Transovarian
D)
High temperature
Cool, humid conditions favor fungal muscardine.
Sericulture Extension Officer • 2018 • Paper-III
Look at this series: 4, 1, (1/4), (1/16), ... What number should come next?
A)
1/3
B)
1/32
C)
1/64
D)
1/128
Each term is divided by 4; 1/16÷4=1/64.
Sericulture Extension Officer • 2018 • Paper-III
The Economic Threshold Level (ETL) of Mealy bug is
A)
10/shoot
B)
20/leaf
C)
20/plant
D)
15/leaf
The stated ETL for mealy bug in this source is 20 per plant.
Sericulture Extension Officer • 2018 • Paper-III
Look at this series: 17, 8, 18, 11, 19, 14, ... What number should come next?
A)
27
B)
20
C)
21
D)
18
Odd/even positions rise separately: 17,18,19,20 and 8,11,14.
Sericulture Extension Officer • 2018 • Paper-III
If the fractions 8/5, 7/2, 9/5, 5/4, 4/5 are arranged in descending order of their values, which one will be fourth?
A)
4/5
B)
8/5
C)
9/5
D)
5/4
Values descending: 7/2, 9/5, 8/5, 5/4, 4/5; the fourth is 5/4.
Sericulture Extension Officer • 2018 • Paper-III
Pest of Eri food plants
A)
Scale insects
B)
Mealy bug
C)
Semilooper
D)
All of these
Scale insects, mealybugs and semiloopers can infest host plants.
Sericulture Extension Officer • 2018 • Paper-III
Manangement of Jassid
A)
0.05% DDVP
B)
0.5% Neem oil
C)
0.1% Benomyl
D)
2% Mancobez
DDVP (dichlorvos) is used as an insecticidal treatment against jassid.
Sericulture Extension Officer • 2018 • Paper-III
I was born on August 11. Mohan is older than me by 11 days. This year’s Independence Day falls on Monday. The day on which Mohan’s birthday will fall this year will be
A)
Friday
B)
Tuesday
C)
Sunday
D)
Thursday
Independence Day is August 15, a Monday. August 11 is Thursday, so 11 days earlier than Mohan’s birthday is Monday; Mohan’s birthday is August 22, which is Friday.
Sericulture Extension Officer • 2018 • Paper-III
Select the pair which has the same relationship as PALAEONTOLOGY: FOSSIL
A)
Phrenology: Skull
B)
Behavior: Accounting
C)
Neurology: Blood
D)
Theology: play
Palaeontology studies fossils; phrenology is associated with skull study.
Sericulture Extension Officer • 2018 • Paper-III
A woman going with a boy is asked by another woman about the relationship between them. The woman replied, “My maternal uncle and the uncle of his maternal uncle is the same.” How is the lady related to that boy?
A)
Grandmother and grandson
B)
Mother and son
C)
Aunt and nephew
D)
Cannot be determined
The wording does not uniquely establish the exact relationship from the stated kinship chain.
Sericulture Extension Officer • 2018 • Paper-III
Boat shaped leaves appearance is caused by
A)
Mealy bug
B)
Cutworms
C)
Thrips
D)
Leaf webber
Thrips feeding can distort young leaves into boat-like shapes.
Sericulture Extension Officer • 2018 • Paper-III
Stem borer can be controlled by applying
A)
1.5% Nuvan
B)
3% Nuvan
C)
2% Bavistin
D)
5% Carbofuron
Carbofuran is used against stem-boring insect pests.
Sericulture Extension Officer • 2018 • Paper-III
The most common disease of Oak Tasar silkworm experienced in Mizoram
A)
Pebrine
B)
Tiger band disease
C)
Grasserie
D)
Muscardine
Tiger band disease is a commonly reported oak tasar silkworm disease in the region.
