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AQUACULTURE


FISHERIES SCIENCE- AQUACULTURE- MCQs

1. Dopamine antagonist available in ovatide is
 A:-Pimozide
 B:-Domperidone
 C:-Tamoxifen
 D:-Acetyl CoA
 Ans: A

2. Crustacean parasites in aquaculture ponds are controlled using
 A:-`"CuSO_4"`
 B:-Malathion
 C:-Malachite Green
 D:-DMSO
 Ans: B
​
3. Chelating agents used in shrimp hatchery is
 A:-Sodium thiosuphate
 B:-Oxytetracyclin
 C:-Zeolite
 D:-EDTA
 Ans: D

4. The most widely used cryoprotectant in fish gamete preservation is
 A:-Methanol
 B:-Acetic acid
 C:-DMSO
 D:-Glycerine
 Ans: C

5. The teleost fish has the following class of immunoglobin
 A:-IgE
 B:-IgM
 C:-IgA
 D:-IgG
 Ans: B
​
6. An example of Anchor worm is
 A:-Argulus
 B:-Lernia
 C:-Gammaria
 D:-Cymathoa
 Ans: B

7. Cotton wool disease in fish is caused by
 A:-Saprolegnia sp.
 B:-Branchiomyces sp.
 C:-Achlya sp.
 D:-Exophila sp.
 Ans: A

8. Red tail disease in shrimp is caused by
 A:-MBV
 B:-TSV
 C:-WSSV
 D:-IHHNV
 Ans: B

9. Sodium amytal is a
 A:-Antibiotic
 B:-Antibacterial agent
 C:-Anesthetic drug
 D:-Larvicidal drug
 Ans: C

10. Gonodotropic hormone with low carbohydrate content induces
 A:-Maturation and ovulation
 B:-Vitellogenesis
 C:-Spawning
 D:-Hatching ratio
 Ans: B

11. Deficiency of a vitamin in the diet results in the deformed quality of eggs with low hatchability
 A:-Vitamin C
 B:-Vitamin B12
 C:-Vitamin D
 D:-Vitamin A
 Ans: A

12. What is an important concept in ecosystem based management of aquaculture production systems?
 A:-Stocking density
 B:-Relative growth
 C:-Carrying capacity
 D:-Feed management
 Ans: C

13. Which organisms dominates the global mariculture production by almost 60% percentage of total production?
 A:-Arthropods
 B:-Finfishes
 C:-Molluscs
 D:-Echinoderms
 Ans: C

14. The artificial substrates used to collect the spat settled in the bivalve hatchery for transferred into open water culture
 A:-Longlines
 B:-Cultch
 C:-Chaplets
 D:-Bufonts
 Ans: B

15. Which are mainly used as sentinel organisms for monitoring the contaminants in the marine environment?
 A:-Sea cucumbers
 B:-Polychaetes
 C:-Mussels
 D:-Sea weeds
 Ans: C

16. Usually bivalves molluscs shows ______ hermaphroditism type of reproduction.
 A:-Protogynous
 B:-Protandrous
 C:-Androgynous
 D:-All the above
 Ans: B

17. An rapid reproductive maturation in shrimps can be achieved by adopting a technique is called as
 A:-Hormone injection
 B:-Eye stalk abalation
 C:-Heat shock method
 D:-Wet feed administration
 Ans: B

18. The use of a combination of GnRF analogue and a dopamine antagonist to induce ovulation and spawning of fishes is known as
 A:-Linpe metod
 B:-Hypophysation
 C:-Gulland technique
 D:-Walne method
 Ans: A

19. Through eye stalk abalation, we are effectively remove the source of hormone and other compounds that control of _________.
 A:-Ecdysis
 B:-Vitalogenesis
 C:-Spawning
 D:-Embryogenesis
 Ans: A

20. Open thelycum shrimp must ________ before each spwaning.
 A:-Mate
 B:-Moult
 C:-Mature
 D:-All the above
 Ans: A

21. Copulation in the decapod crustaceans typically involves between male and ________.
 A:-Maturated female
 B:-Moulted female
 C:-Berried female
 D:-Morbid female
 Ans: B

22. Artemia will produce cyst through ________ reproduction.
 A:-Ovipary
 B:-Ovovivipary
 C:-Vivipary
 D:-Altricial development
 Ans: A

23. Brooder fishes are usually marked by __________ for identification and management in captivity.
 A:-Pit tag
 B:-Staining
 C:-Opercular rings
 D:-Peterson disc
 Ans: A

24. The cultivable fish well known for its parental care behaviour
 A:-Sea bass
 B:-Pearl spot
 C:-Pompano
 D:-Pangassius
 Ans: B

25. The slope of the periphery bunds is worked out by using _________ formula during the pond construction.
 A:-Mannings
 B:-Gulland
 C:-Benwton
 D:-None of the above
 Ans: A

26. Which is the ideal fish to culture using biofloc technology?
 A:-Sea bass
 B:-Tilapia
 C:-Mullet
 D:-Etroplus
 Ans: B

27. Simazine is used for controlling
 A:-Blue green algae
 B:-Fish lice
 C:-Fungi
 D:-Virus
 Ans: A

28. Acidosis is caused due to
 A:-Decrease of calcium salts
 B:-Increase in chlorine content
 C:-Increase iron content in water
 D:-Decrease in sulfate content
 Ans: A

29. The use of hormone injection for induced breeding of fishes started in
 A:-Brazil
 B:-India
 C:-Russia
 D:-China
 Ans: A

30. To eradicate the submerged weeds, weedicide used is
 A:-2,4-D
 B:-Zeolite
 C:-Formalin
 D:-Malathion
 Ans: A

31. All male production of guppies can be obtained using
 A:-MS222
 B:-Estrogen
 C:-17 `alpha` MT
 D:-HCG
 Ans: C

32. Ideal slope of pond is
 A:-2 :1
 B:-1 : 1
 C:-1 : 2
 D:-1 : 5
 Ans: B

33. In fish breeding 2-phenoxyethanol is used as
 A:-Antiseptic
 B:-Anaesthetic
 C:-Antibiotic
 D:-Analogue hormone
 Ans: B

34. Ranchu is a variety of
 A:-Koi carp
 B:-Goldfish
 C:-Tetra
 D:-Guppy
 Ans: B

35. Which equipment is used in reducing the organic/biological load in reef aquaria?
 A:-Powerhead
 B:-Canister Filter
 C:-Wave maker
 D:-Protein skimmer
 Ans: D

​
36. Which parasite was reported to cause mass mortality in Poecilia reticulata and is known as guppy killer disease?
 A:-Lernaea
 B:-Tetrahymena
 C:-Argulus
 D:-Ichthyophthirius
 Ans: B

37. Scientific name of Neon tetra
 A:-Scleropages formosus
 B:-Pterophyllum scalare
 C:-Poecillia reticulate
 D:-Paracheirodon innesi
 Ans: D

38. Gonopodium is the modified ______ fin of male swordtail, Xiphophorus helleri.
 A:-Caudal fin
 B:-Pectoral fin
 C:-Anal fin
 D:-Pelvic fin
 Ans: C

39. The Thelycum of female shrimp is a modification of the
 A:-Sternal plate
 B:-Exopodite
 C:-Endopodite
 D:-Pleura
 Ans: A

40. In India, the blacklip pearl oysters is endemic to
 A:-Lakshadweep Islands
 B:-East coast
 C:-West coast
 D:-Andaman and Nicobar Islands
 Ans: D

41. The last stage of larva during the development stage of rock lobsters is
 A:-Glochidium
 B:-Pediveliger
 C:-Plerulus
 D:-Brachionus
 Ans: C

42. The ratio of dry meat weight to volume shell cavity is known as
 A:-Gastro Somatic Index
 B:-Body Mass Index
 C:-Capacity Index
 D:-Condition Index
 Ans: D

43. The first shrimp species successfully bred in captivity is
 A:-P. japonicas
 B:-P. merguiensis
 C:-P. semisulcatus
 D:-P. Monodon
 Ans: A

44. A modern shrimp hatchery is considered as __________ type hatchery system.
 A:-IMTA
 B:-Japanese system
 C:-Galveston system
 D:-Eco hatchery
 Ans: C

45. The genital opening in male shrimp is situated at the base which pereopod
 A:-Second
 B:-Third
 C:-Fourth
 D:-Fifth
 Ans: D

46. The prime shrimp hatchery technology in India is developed for
 A:-F. indicus
 B:-P. semisulcatus
 C:-L. vannamei
 D:-P. Monodon
 Ans: D

47. In India Clarius batrachus is commonly known as
 A:-Stinging catfish
 B:-Magur
 C:-Snakehead
 D:-Murrel
 Ans: B

48. Valvet disease is caused by
 A:-Bacteria
 B:-Virus
 C:-Fungi
 D:-Protozoa
 Ans: D

49. 'Freeboard' is the term used with reference to the construction of
 A:-Dike
 B:-Spillway
 C:-Sluice
 D:-Bund
 Ans: A

50. Which is called the mother of probiotics?
 A:-Nitrosomonas
 B:-Lactobacillus
 C:-Nitrobacter
 D:-None
 Ans: B
51. Scoliosis and Lordosis disease is caused by the deficiency of Vitamin
 A:-A
 B:-B
 C:-C
 D:-None
 Ans: C

52. Induced breeding and seed production technology for sea bass was first developed by
 A:-CMFRI
 B:-RGCA
 C:-CIBA
 D:-CIFRI
 Ans: C

53. Koi carp is developed from common carp by
 A:-Transgenesis
 B:-Selective breeding
 C:-Gynogenesis
 D:-Mutation
 Ans: B

54. Fishes which deposit eggs on sand are called
 A:-Lithophils
 B:-Psammophils
 C:-Phytophils
 D:-Speleophils
 Ans: B

55. P. Monodon attains first maturity in
 A:-8 month
 B:-10-12 months
 C:-6 months
 D:-13-15 months
 Ans: B

56. In fish feeds what is added to enhance colouration
 A:-Cellulose
 B:-CMC
 C:-Carotenoids
 D:-Gelatin
 Ans: C

57. Random sampling means
 A:-Providing equal chance to all the individuals to be sampled
 B:-Sampling from prefixed stations
 C:-Sampling from randomly selected stations
 D:-Sampling assuming equal distribution of samples in the population
 Ans: A

58. Comparison of means of five different treatments can be achieved by
 A:-t-test
 B:-Chi-square test
 C:-Correlation analysis
 D:-F-test
 Ans: D

59. Commercial level captive breeding and larval rearing of mud crabs is carried out by ________.
 A:-CMFRI
 B:-CIFRI
 C:-RGCA
 D:-College of Fisheries - Mangalore
 Ans: C

60. Active compound present in Mahua oil cake to kill fishes is __________.
 A:-Niclosamide
 B:-MS222
 C:-Rotenone
 D:-Saponin
 Ans: D

61. Which among the following is used during pond preparation to control obnoxious gas?
 A:-Calcium carbonate
 B:-Alum
 C:-Zeolite
 D:-Mahua
 Ans: C

62. Shrimp introduced recently in Indian aquaculture
 A:-Litopenaeus vannamei
 B:-Penaeus japonicus
 C:-Penaeus merguiensis
 D:-Penaeus monodon
 Ans: A

63. Mahima shrimp feed is developed by _________.
 A:-CMFRI
 B:-CIFT
 C:-Kerala State Fisheries Department
 D:-MPEDA
 Ans: A

64. Monogamy is seen in
 A:-Angel fish
 B:-Guppies
 C:-Koi carps
 D:-Goldfish
 Ans: A

65. Highest carotenoid content was observed in
 A:-Chlorella
 B:-Haematococcus
 C:-Isochrysis
 D:-Spirulina
 Ans: D

66. Green fluorescent zebra Danio reiro is produced by
 A:-Androgenesis
 B:-Gynogenesis
 C:-Transgenesis
 D:-Chemical treatment
 Ans: C

67. Ammonia concentration is toxic to fish beyond
 A:-0.05 mg/L
 B:-0.5 mg/L
 C:-0.75 mg/L
 D:-10 mg/L
 Ans: A

68. The factor that controls productivity in aquaculture pond is
 A:-Colloidal content of soil
 B:-Acidic bottom of the pond
 C:-Calcium content of bottom soil
 D:-Cellulose mud of the pond
 Ans: D

69. Breeding Traps are generally used for
 A:-Anabantids
 B:-Danios
 C:-Live bearers
 D:-Gold Fish
 Ans: C

70. Moist feed are suitable for
 A:-Lobsters
 B:-Tiger Shrimp
 C:-Freshwater Prawns
 D:-Sea bass
 Ans: D

71. Soil having equal proportion of sand, silt and clay is called
 A:-Sandy soil
 B:-Clay soil
 C:-Peaty soil
 D:-Loamy soil
 Ans: D

72. Which aqua farming techniques is most appropriate to utilize the autochthonous potentialities of bheels?
 A:-Pig cum fish culture
 B:-Cage culture
 C:-Duck cum fish culture
 D:-Pen culture
 Ans: D

73. Pond sealing may be accomplished by the following method
 A:-Soil compaction
 B:-Water proof lining
 C:-Bentonite application
 D:-All the above
 Ans: D

74. Natural antioxidant used in the aquafeed is
 A:-BHA
 B:-BHT
 C:-Ethoxyquin
 D:-Tocopherol
 Ans: D

75. Floating feeds used in fish culture are
(A) particulate pellets (B) extruded pellets (C) vacuum dried pellets (D) encapsulated pellets
Ans: B

76. Protein level adequate for most species of cultured shrimp is in the range of
(A) 20% — 30% (B) 35% —40% (C) 10% — 15% (D) 60% - 70%
Ans: B
 
77. The widely used microalgae that serve as food for rotifers used as live feed for shrimp larvae
(A) Chlorella  (B) Nannochloropsis (C ) Scenedesmus (D) Tetraselmis
Ans: A


78. The number of autosomal chromosomes in catla are
(A) 24
(B) 30
(C) 48
(D) 44
Ans: C
 
79. Which of the following is not a freshwater prawn ?
(A) Macrobrachium malcolmsomi
(B) Macrobrachium idella
(C) Penaeus monodon
(D) Macrobrachium gangaeticum
Ans: C

80. Example of submerged plant
(A) Hydrilla
(B) Najaj
(C) Eichornia
(D) Typha
Ans: A

81. Naadan is a hybrid, crossed by
(A)  Rohu x Catla (B) Catla x Mrigal
(C) Mrigal x Rohu (D) Grass carp x Silver carp
Ans: A
 
82.
Which one aerate the pond water ?
(A) Duck
(B) Pig
(C) Cow
(D) Poultry
Ans: A

83.
Silver carp is used for the control of
(A) Microphyte
(B) Algal bloom
(C) Zooplankton
(D) Macrophyte
Ans: B

84. Daphnia longispina belongs to the order
(A) Copepoda (B) Cladocera (C) Decapoda (D) Tintinmida
​Ans: B
 
85. In ponds, the primary consumers are
(A) zooplankton (B) phytoplankton
(C) zooplankton feeding fishes
(D) predatory fishes
Ans: A

86. Induced breeding using the pituitary hormone extracts in Carp fishes is called
(A)  Spawning (B) Hypophysation
(C) Conditioning (D) Weaning
Ans: B
 
87. Supplementation of carotenoids in the fish feeds used for ornamental fishes primarily improve the
(A) colour and attractiveness
(B) survival
(C) resistance to diseases
(D) reproduction efficiency
Ans: A
 
88. The Gestation period of Guppy is
(A) 5 - 6 weeks (B) 1 -2 weeks
(C ) 3 -4 weeks (D) 7 - 8 weeks
Ans: C

89. The most common shrimp pathogenic bacteria belong to the Genus
(A) Bacillus
(B) Vibrio 
(C) Salmonella
(D) Streptococci
Ans: B
 
90. Indian pearl oyster production technology developed successfully by CMFRI scientist
(A) Dr. Alikunhi (B) Dr. K.Alagarswami (C) Dr. M.S. Swaminathan (D) Dr. Alavandan
Ans: B
 
91. The plankton present in the running water habitat are termed
(A) limnoplankton (B) helioplankton  (C) haliplankton (D) rheoplankton
Ans: D

92. Studying the nature of fish food and dietary needs of fish body is called as
(A) Fish in nutrition (B) Fish nutrition
(C) Aquaculture nutrition (D) Nutrition
Ans: B
 
93. Pearson’s single square method is used when
(A) only two ingredients used
(B) only one ingredient used
(C) two and four ingredients used
(D) two and five ingredients used
Ans: A
 
94. For formalin stress test, the dose rate for 100 shrimps is
(A) 200 ppm formalin for 3 hrs
(B) 200 ppm formalin for 1 hr
(C) 150 ppm formalin for 6 hrs
(D) 1 ppm formalin for 1 hr
Ans: B 

95. FCR is calculated by
(A) feed given (wet weight)/weight gain (wet weight)
(B) weight gain (wet weight)/feed given (dry weight)
(C) feed given (dry weight)/weight gain (wet weight)
(D) weight gain (dry weight)/feed given (dry weight)
Ans: C

96.
Sewage fed aquaculture is mainly practiced in which state ?
(A) Assam
(B) Manipur
(C) Andhra Pradesh
(D) West Bengal
Ans: D

97. Which of the following is not a fresh water oyster found in India ?
(A) Lamellidens marginalis
(B) Pareysia corrugata
(C) Hyriopsis schlegeli
(D) Lamellidens corrianus
Ans: C

98. The carp spermatozoa is activated by
(A) Oil
(B) Water
(C) Alcohol
(D) Glycerine
Ans: B
 
99. The ratio of male and female in ecohatchery by body mass is
(A) 2:3
(B) 1:1
(C) 1:2
(D) 1:3
Ans: B
 
100. The recommended rate of juveniles in monoculture of freshwater prawn culture is
(A) 5000/ha— 10000/ha
(B) 10000/ha— 12000/ha
(C) 20000/ha— 30000/ha
(D) 50000/ha— 1,00,000/ha
Ans: C
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