LDE (other) • 2021 • Paper-I
The first moult lasts for:
A)
5 – 10 hours
B)
10 – 15 hours
C)
15 – 20 hours
D)
20 – 24 hours
The first moult commonly lasts roughly 10–15 hours.
LDE (other) • 2021 • Paper-I
A basal dose of organic manure is applied at the rate of __________ per hectare in rainfed areas:
A)
5 tonnes
B)
10 tonnes
C)
20 tonnes
D)
25 tonnes
This follows the standard mulberry/sericulture cultivation recommendation for the stated condition.
LDE (other) • 2021 • Paper-I
FYM has to be applied at __________ in two doses following the first bottom pruning and third pruning:
A)
10 tonnes/ha/yr
B)
20 tonnes/ha/yr
C)
25 tonnes/ha/yr
D)
40 tonnes/ha/yr
This follows the standard mulberry/sericulture cultivation recommendation for the stated condition.
LDE (other) • 2021 • Paper-I
Optimum spacing of mulberry planting under rainfed condition is:
A)
40 × 40cm
B)
60 × 60cm
C)
90 × 90cm
D)
120 × 120cm
This follows the standard mulberry/sericulture cultivation recommendation for the stated condition.
LDE (other) • 2021 • Paper-I
The female larva has a pair of sex marks on the ventral side of the 8th and 9th abdominal segments called:
A)
Bursa copulatrix
B)
Herold’s gland
C)
Ishiwata’s fore glands
D)
Seminal duct
The paired sex marks are associated with Ishiwata's fore glands.
LDE (other) • 2021 • Paper-I
The casting off its skin by silkworm is called:
A)
moulding
B)
mounting
C)
moulting
D)
voltinism
Casting off the larval skin is moulting.
LDE (other) • 2021 • Paper-I
The common organic manure used in mulberry garden is:
A)
Neem oil cake
B)
Silkworm litter
C)
Mulberry twigs
D)
FYM and compost
This follows the standard mulberry/sericulture cultivation recommendation for the stated condition.
LDE (other) • 2021 • Paper-I
The maximum distance to be covered during transportation of young age silkworm is about __________ journey:
A)
3 hours
B)
5 hours
C)
8 hours
D)
12 hours
This is the standard sericulture/agronomic practice for the condition stated.
LDE (other) • 2021 • Paper-I
The female pupa can be distinguished from the male by the vertical line in the centre of the __________ abdominal segment on the ventral side:
A)
6th
B)
7th
C)
8th
D)
9th
This is the standard sericulture/agronomic practice for the condition stated.
LDE (other) • 2021 • Paper-I
In case of leaf harvest methods, the first harvest is taken __________ after 1st pruning:
A)
50 days
B)
70 days
C)
100 days
D)
120 days
The first harvest after the first pruning is around 70 days in the cited practice.
LDE (other) • 2021 • Paper-I
Commercial formalin contains __________ formaldehyde:
A)
20 – 25 %
B)
26 – 30%
C)
36 – 40%
D)
40 – 45%
Commercial formalin is typically about 37–40% formaldehyde; among the given choices, 36–40% is the closest.
LDE (other) • 2021 • Paper-I
__________ before brushing, disinfection should be done:
A)
1 day
B)
2 days
C)
3 days
D)
4 days
Rearing-room disinfection is completed about two days before brushing.
LDE (other) • 2021 • Paper-I
Silkworm litter should be removed periodically, and the process of its removal is called:
A)
disinfection
B)
bed cleaning
C)
deflossing
D)
disinfectant
Removal of silkworm litter from the bed is called bed cleaning.
LDE (other) • 2021 • Paper-I
Time of harvesting preferable during:
A)
morning hours
B)
noon time
C)
evening hours
D)
night time
Harvesting is commonly preferred around noon/afternoon when leaves have suitable moisture balance.
LDE (other) • 2021 • Paper-I
Recommended doses of fertilizers after 2nd year onwards under rainfed condition:
A)
100N : 50P : 50K
B)
100N : 100P : 50K
C)
100N : 100P : 100K
D)
50N : 50P : 50K
This follows the standard mulberry/sericulture cultivation recommendation for the stated condition.
LDE (other) • 2021 • Paper-I
__________ formalin is used for routine disinfection of rearing room and rearing appliances prior to the commencement of rearing:
A)
2%
B)
5%
C)
8%
D)
10%
A dilute formalin solution (commonly about 2%) is used for routine disinfection.
LDE (other) • 2021 • Paper-I
The entire branch of mulberry plant is harvested and used to feed silkworms. This method is known as:
A)
Branch cutting
B)
Whole shoot harvest
C)
Leaf picking
D)
Root cutting
Harvesting the whole branch for feeding is termed whole-shoot harvest.
LDE (other) • 2021 • Paper-I
Wooden or bamboo rearing trays are arranged in tiers on rearing stand for rearing and is called:
A)
Floor rearing
B)
Tray rearing
C)
Self rearing
D)
Shoot rearing
This is the standard sericulture/agronomic practice for the condition stated.
LDE (other) • 2021 • Paper-I
Optimum temperature required during the 1st instar:
A)
10 – 150C
B)
15 – 180C
C)
26 – 280C
D)
28 – 320C
This is the standard sericulture/agronomic practice for the condition stated.
LDE (other) • 2021 • Paper-I
The ideal range of pH value of soil for mulberry cultivation is:
A)
3.5 – 3.9
B)
4.9 – 5.5
C)
6.2 – 6.8
D)
7.2 – 7.2
This is the standard sericulture/agronomic practice for the condition stated.
LDE (other) • 2021 • Paper-I
__________ method avoids the transmission of diseases through scion as it uses only a small portion of it:
A)
Root grafting
B)
Bud grafting
C)
Shoot grafting
D)
Layering
This follows the standard mulberry/sericulture cultivation recommendation for the stated condition.
LDE (other) • 2021 • Paper-I
Mulberry is mostly propagated through:
A)
Layering
B)
Grafting
C)
Sapling
D)
Cutting
This is the standard sericulture/agronomic practice for the condition stated.
LDE (other) • 2021 • Paper-I
In male pupa, there is a small round spot on the __________ segment:
A)
6th
B)
7th
C)
8th
D)
9th
This is a standard Bombyx mori life-cycle or morphology fact.
LDE (other) • 2021 • Paper-I
__________ races lay only non-hibernating eggs:
A)
Univoltine
B)
Bivoltine
C)
Multivoltine
D)
Commercial
Multivoltine races normally lay non-hibernating eggs.
LDE (other) • 2021 • Paper-I
The size of moth is about:
A)
1 × 2 cm
B)
2 × 2 cm
C)
3 × 3 cm
D)
4 × 2 cm
An adult Bombyx mori moth is roughly 3 × 3 cm in the simplified measurement used here.
