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
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
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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