Sericulture Practice Questions Papers

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Sericulture Practice Questions Papers

Practice Questions Papers on Sericulture

1. Muga silkworms are vulnerable mainly to ________ types of diseases.
(a) 1
(b) 2
(c) 3
(d) 4

2. What is the mechanical disinfection in grainage appliances?
(a) Sun drying in hot sun for 6 – 8 hours
(b) Dry in hot air oven
(c) Wash with hot water
(d) Clean with soap and brush

3. In Muga sector P2 layings are prepared by the :
(a) CSB
(b) the state govt.
(c) private rearer
(d) private graineurs

4. In some states there are licensed seed preparers. Why?
(a) Rearers want to have their own prepared seed.
(b) Farmers dont rely upon then government.
(c) When the demand of seed cannot be met by the government.
(d) The government cannot produce seeds for the farmers.

5. Studies on P. ricini on the inheritance of larval body colour, spotting pattern and cocoon colour shown that all these characteristics are :
(a) Monogenic
(b) Polygenic
(c) Transgenic
(d) triple genic

6. Optimum condition for incubation of Mulberry eggs is :
(a) 24 ± 1o C with 70% RH
(b) 25 ± 1o C with 75% RH
(c) 26 ± 1o C with 80% RH
(d) 27 ± 1o C with 80 – 85% RH

7. In India loose eggs are prepared mostly in :
(a) Univoltine hybrid
(b) Bivoltine hybrid
(c) Mutivoltine hybrid
(d) Trivoltine hybrid

8. Black boxing aims at :
(a) To get uniform hatching on a single day
(b) Faster development of eggs
(c) To avoid mortality in the egg stage
(d) To protect from ants and predators before hatching

9. Oak tasar seed cocoons are preserved in garland and the cocoons are subjected to 16 hours photoperiodic treatment. Why?
(a) To synchronise the emergence of moth and to break untimely pupal diapauses
(b) To shorten the period of pupal stage
(c) To lengthen the period of pupal stage
(d) To sharten the period of moth stage

10. Second crop of Tasar cocoons are preserved at high altitude where the temperature remains below 15o C. Why?
(a) To prevent untimely emergence and to lengthen the period of pupal diapauses for the next spring crop
(b) To stop metabolism of silkworm
(c) To prevent from many of the predators for cocoons attack
(d) To refrain from pollution

11. Why moth examination is required?
(a) To detect/determine the presence of pebrine spores
(b) To have healthy silkworm eggs
(c) To avoid disease infection
(d) To detect the presence of tukra

12. Optimum condition for incubation of Oak tasar eggs is :
(a) 18 ± 2o C and 70% RH
(b) 22 ± 2o C and 80% RH
(c) 25 ± 1o C and 85% RH
(d) 24 ± 1o C with 70% RH

13. Location of grainage building in Tropical tasar should be :
(a) low lying area
(b) well elevated
(c) as found convenient
(d) very high altitude

14. Daba cocoon is produced by :
(a) Anthereae mytta
(b) Anthereae assamensis
(c) Anthereae proylei
(d) Anthereae pernei

15. The grainage building of Tropical tasar silkworm should have ___________ width all round verandah.
(a) 2.00 m
(b) 2.5 m
(c) 3.00 m
(d) 4.0 m

16. A mud walled with high ceiling is a low cost grainage building of :
(a) Muga grainage
(b) Eri grainage
(c) Tropical tasar grainage
(d) Mulberry grainage

17. The most common disinfectants in all varieties is :
(a) 0.1 Rogor
(b) 2 – 5 % Formalin
(c) 1% Bavistin
(d) Sulphuric acid

18. Define Micorbial disease.
(a) A relationship between two organism that is not beneficial to one or to both of them
(b) A saprophytic disease
(c) A parasytic disease
(d) Both saprophytic and parasytic diseases

19. What are the two procedures of moth examination?
(a) Dry moth examination & Green moth examination
(b) Live moth examination of male & female
(c) Preserved moth examination of male & female
(d) Just before emergence of moth in male & female

20. Only ___________ of twenty six carbohydrates constituents are utilized by the eri silkworm.
(a) 15
(b) 16
(c) 17
(d) 18

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21. For surface sterilization of eggs, the egg sheets are dipped in 2% formalin solution for :
(a) 8 – 10 mins
(b) 10 – 15 mins
(c) 15 – 20 mins
(d) 2 – 3 mins

22. ___________ seed cocoon batches should not be produced.
(a) Defective
(b) Flimsy
(c) Oval
(d) Elongated

23. Male moth should not be cold stored for more than :
(a) 5 times
(b) 6 times
(c) 7 times
(d) 8 times

24. Male moth can be used for coupling ___________ if required.
(a) Thrice
(b) Twice
(c) four times
(d) fith times

25. The study of the nature of disease/micro organism is known as :
(a) Pathogenic
(b) Pathology
(c) Pathologist
(d) Oncologist

26. Anthereae proylei is silkworm race from crossing of Anthereae ___________ and Anthereae ___________ .
(a) pernyi and roylei
(b) mylitta and pernyi
(c) roylei and polyphemus
(d) cynthia and mylitta

27. What is the use of Chakaripera?
(a) It is coupling cage specially made for Muga silk moth
(b) It is used for coupling cage of Eri
(c) It is used for coupling cage of Mulberry
(d) Tasar cocoon preservation cage

28. Eri silk worm is characterised by low sericin content of ___________ as compared with 10% in mulberry silk, 8.62% in tasar and 7.88% in Muga.
(a) 4.96%
(b) 4.70%
(c) 5.96%
(d) 5.50%

29. In Mulberry silkworm the optimum climatic condition is :
(a) 24 ± 1o C and 70 ± 5 % RH
(b) 25 ± 1o C and 75 ± 5 % RH
(c) 26 ± 1o C and 80 ± 5 % RH
(d) 27 ± 1o C and 70 ± 5 % RH

30. What is the chemical used to break the diapausing bivoltine eggs :
(a) Hydrochloric acid with 1.072 Specific gravity
(b) Suplhuric acid
(c) Hydrochloride acid
(d) Sodium hypochloride

31. Optimum temperature for hot acid treatment is :
(a) 40o C
(b) 46o C
(c) 50o C
(d) 45o C

32. What is quality bivoltine seed?
(a) Cross between Bi x Bivoltine
(b) Bi x Multivoltine
(c) Quality bivoltine seed is a cross between two unrelated bivoltine silkworm breed parent eed cocoons.
(d) Uni x Bivoltine

33. One of the method for synchronization of emergence of Muga is :
(a) To preserve early emerge male moth upto 48 hours at 10o C
(b) To preserve early emerge male moth upto 45 hours at 15o C
(c) To preserve early emerge male moth upto 40 hours at 20o C
(d) To preserve early emerge male moth upto 43 hours at 10o C

34. Fresh tender, high nutritious, succulent mulberry leaves for feeding of newly hatch larvae should contain ___________ moisture.
(a) 60 – 65 %
(b) 70 – 75 %
(c) 80 – 85 %
(d) 70 – 80 %

35. Mulberry chawki worms consume only ___________ % of total feeds but increase 400 times in its body weight, 300 times in body size and 500 times in silk gland weight if the condition are ideal.
(a) 6%
(b) 7%
(c) 8%
(d) 9%

36. After disinfectants are sprayed inside the grainage, let it be closed for __________ hours before use.
(a) 24
(b) 48
(c) 56
(d) 72

37. Use perforated plastic basket of 565 mm x 365 mm x 215 mm which may contain around ___________ cocoons.
(a) 5 kgs
(b) 10 kgs
(c) 12 kgs
(d) 20 kgs

38. The Optimum temperature and relative humidity required for bivoltine seed cocoon preservation is :
(a) 24 ± 1o C and 70 % RH
(b) 26 ± 3° C and 75 % RH
(c) 25 ± 3° C and 75 % RH
(d) 29 ± 1° C and 75 % RH

39. Under optimum rearing condition, mulberry silkworm takes __________ days to settle for 1st moult.
(a) 3 to 3.5 days
(b) 4 days
(c) 2 to 3 days
(d) 4 to 4.5 days

40. How many types of acid treatments are there?
(a) One
(b) Two
(c) Three
(d) Four

41. What is the ___________ specific gravity used in cold acid treatment when the temperature is 25oC?
(a) 1.100
(b) 1.108
(c) 1.105
(d) 2.105

42. Diapausing eggs should pass through moderately low temperature (20 o C, 15 o C, 10 o C) before starting of cold storage at ___________ to reduce cold injury.
(a) 5 o C/2.5 o C
(b) 2.5 o C/5 o C
(c) 6.5 o C /3.0 o C
(d) 5 o C / 3.0 o C

43. What is seed technology?
(a) The technology involved in production of commercial seeds
(b) The production of high yielding silkworm seeds
(c) The technology involved in production of healthy seeds
(d) Preparation of silkworm seed

44. Extension is an instrument of ___________.
(a) Differ
(b) Change
(c) new
(d) motivatio

45. The word extention is derived from the ___________ word.
(a) Greek
(b) Latin
(c) Germany
(d) French

46. Give the long form of R.E.C.
(a) Rearing Extention Centres
(b) Reasearch Extention Centres
(c) Research Exchange Centres
(d) None of the above

47. Extention programmes provide educational benefits to :
(a) The person
(b) The people
(c) All men
(d) All women

48. How many areas of programme emphasis the scope of Sericultural extention work?
(a) Five
(b) Six
(c) Eight
(d) Nine

49. Extention is helping people :
(a) To help themselves
(b) To help others
(c) To help needy
(d) To help the weaker section

50. How many DO’s are there in extension, management and economics?
(a) 5
(b) 6
(c) 7
(d) 8