ICAR/JRF 2016 Practice Questions

Multiple Choice Questions

1. Which country is the first among ornamental fish-producing countries?

a) Singapore
b) India
c) Malaysia
d) Japan

2. Gynogenesis occurs naturally in some fishes belonging to the family:

a) Poecilidae
b) Cyprinidae
c) Cyprinodontidae
d) None

3. Which is called the mother of probiotics?

a) Nitrosomonas
b) Lactic acid bacteria
c) Nitrobacter
d) None

4. The dopamine antagonist present in Ovatide is:

a) Pimozide
b) Domperidone
c) Tamoxifen

5. The institute related to brackishwater aquaculture is:

a) CIBA
b) CIFA
c) CMFRI
d) CIFRI

6. Which form is toxic to fish?

a) NH4+
b) NH3 & NO2
c) NO3
d) All of the above

7. Fishes that deposit eggs on sand are called:

a) Lithophils
b) Psammophils
c) Phytophils
d) None

8. The chelating agent used in shrimp hatchery is:

a) Sodium thiosulphate
b) EDTA
c) Oxytetracycline
d) None of these
9. Moult Death Syndrome occurs in captive:
a) Crabs
b) Lobsters
c) Prawns
d) Fishes

10. The gear used for Bombay duck fishery is:

a) Shore seine
b) Gill net
c) Dol net
d) Gill net

11. The phenomenon of biomagnification is shown by:

a) Heavy metals
b) Domestic sewage
c) Distillery waste
d) None of these

12. Pearl is formed by the secretion of:

a) Shell
b) Gonadal tissue
c) Mantle tissue
d) Intestinal tissue

13. One molecule of glucose on complete oxidation produces:

a) 30 ATP mole
b) 38 ATP mole
c) 40 ATP mole
d) 45 ATP mole

14. The most widely used cryoprotectants in fish gamete preservation are:
a) Methanol
b) DMSO
c) Acetic acid
d) None of these

15. The fish that easily breeds in ponds is:

a) Grass carp
b) Catla
c) Common carp
d) None

16. The analytical model was developed by:

a) Beverton and Holt
b) Daniel Pauly
c) Gulland
d) None

17. Exploitation of a fish stock at the right age is called:

a) Under fishing
b) Over fishing
 c) Eumetric fishing
d) None of these

18. The larval stage capable of reproducing is known as:

a) Parthenogenesis
b) Hermaphrodites
c) Paedogenesis
d) None of these

19. The deepest lake in the world is:

a) Baikal lake
b) Superior lake
c) Chilka lake
d) Pulicat lake

20. The cost of producing an additional unit of output is called:

a) Marginal cost
b) Variable cost
c) Fixed cost
d) Total cost

21. A natural antioxidant is:

a) Phosphoric acid
b) Ascorbic acid
c) α-Tocopherol
d) Citric acid

22. Coracle is operated in:

a) Pond
b) Ocean
c) Reservoir
d) All the above

23. Ablation of eyestalk in crustaceans:

a) Accelerates vitellogenesis
b) Retards maturation
c) Increases fecundity
d) Promotes mortality

24. Itai-Itai disease is due to consumption of fish contaminated with:

a) Cadmium
b) Zinc
c) Mercury

25. The correct order of flow in the structure of fish marketing is:
a) Consumers, Retailers, Auctioners, Wholesalers
b) Wholesalers, Auctioners, Retailers, Consumers
c) Auctioners, Wholesalers, Retailers, Consumers
d) Wholesalers, Retailers, Auctioners, Consumers

26. An essential fatty acid is:

a) Stearic acid
 b) Linoleic acid
c) Oleic acid
d) Palmitic acid

27. The process of reducing the number of meshes in rows to alter the webbing shape is
known as:
a) Creasing
b) Baiting
c) Mending
d) None of these

28. Melanization occurs in shrimps due to the action of:

a) Immunostimulants
b) Hormones
c) Pro-Phenoloxidase
d) Immunoprophylaxis

29. Male Scoliodon is distinguished from female Scoliodon by the presence of:
a) Cloacal aperture
b) Claspers
c) Pelvic fin
d) Dorsal fin

30. Which areas in the oceans are rich in fish population?

a) Upwelling area
b) Pelagic region
c) Benthic region
d) None

31. Fish muscle protein denaturation is due to changes in:

a) Sarcoplasmic protein
b) Myofibrillar protein
c) Stroma protein
d) Myogen

32. The first Indian Fisheries Act was passed on:

a) 1920
b) 1897
c) 1850
d) 1900

33. Highest heat resistance is exhibited by the spores of:

a) B. subtilis
b) B. stearothermophilus
c) C. botulinum
d) None

34. Larvae of sea cucumber are:

a) Doliolaria
b) Auricularia
 c) Branchiolaria
d) Bipinaria

35. Larvae of molluscs are:

a) Trochophore
b) Tornaria
c) Alima
d) Alevin

36. The scientific name of Ten pounder is:

a) Megalops cyprinoides
b) Elops machnata
c) Nematalosa nasus
d) None

37. The mud flat and saline swamps located in West Bengal are called:
a) Bheries
b) Lagoon
c) Backwater

38. When the coefficient of elasticity exceeds one, the demand is called:
a) Inelastic demand
b) Elastic demand
c) Unitary elastic demand
d) None

39. The most basic amino acid is:

a) Methionine
b) Hydroxyproline
c) Glutamine

40. A colorless, odorless refrigerant is:

a) Ammonia
b) Freon
c) Liquid nitrogen
d) None

41. Mahima shrimp feed was developed by:

a) CIBA
b) CIFT
c) CMFRI
d) CIFE

42. Crassostrea gigas is commonly called:

a) Flat oyster
b) Cup oyster
c) Edible oyster
d) None

43. The largest estuarine ecosystem in India is:

a) Hooghly Matlah estuary
b) Mahanadi system
 c) Godavari system
d) Narmada system

44. The scientific name of freshwater pearl is:

a) Perna viridis
b) Pinctada fucata
c) Lamellidens marginalis
d) None

45. Water mass is characterized by:

a) Sea surface temperature
b) Zooplankton indication
c) Temperature salinity profile
d) Density

46. The major ω-3 fatty acid of fish lipid is:

a) Eicosapentaenoic acid
b) Lauric acid
c) Palmitic acid
d) Stearic acid

47. The component of a refrigeration system used to store the refrigerant is:
a) Receiver
b) Expansion valve
c) Condenser
d) None

48. Colchicine is used for suppressing:

a) Cell division
b) Metaphase chromosomes
c) Growth
d) None of these

49. Cured skin of shark is commercially called:

a) Shagreen
b) Pearl essence
c) Finrays
d) None

50. An animal association where no partner is harmed and one or both partners are benefited
is called:
a) Symbiosis
b) Commensalism
c) Mutualism
d) None

51. An important additive used for the water-holding capacity of fish is:
a) Polyphosphate
b) AMP
c) Arabinose
d) Collagen
52. The first transgenic fish was produced in the year:
a) 1980
b) 1982
c) 1985
d) 1990

53. The circulatory system in fish is:

a) Closed system
b) Open system
c) Vertical
d) None

54. The International Year of the Ocean was:

a) 1997
b) 1998
c) 1996
d) 1994

55. An important additive used for fish preservation is:

a) Polyphosphate
b) AMP
c) Arabinose
d) Collagen

56. Ionizing radiation commonly used for food preservation is:

a) X-rays
b) β-rays
c) Gamma rays
d) α-rays

57. Cells responsible for synthesizing antibodies are:

a) B cells
b) T cells
c) Both B and T cells
d) None

58. Monocytes produce:

a) Antibodies
b) Antigen
c) Immunoglobulin
d) None

59. The change of state from solid to vapor without melting is known as:
a) Sublimation
b) Evaporation
c) Condensation
d) None

60. The green water method of algae production is practiced in:

a) Fish culture centers
b) Macrobrachium culture centers
 c) Prawn larvae culture centers
d) Artemia culture centers

61. Biomagnification is related to:

a) Pollution
b) Turbidity
c) Turbulence
d) None

62. Physalia is also called:

a) Portuguese man-of-war
b) Little star
c) Queen of sea
d) None

63. “Irish Moss” is:

a) Pectin
b) Carrageen
c) Chitin
d) Gelatin

64. Cold store temperature is:

a) -30°C
b) -18°C or below
c) -40°C
d) None

65. Acetyl number is related to:

a) NaOH
b) KOH
c) NaCl
d) CH3COOH

66. Brachionus is a valuable live food, but early larval stages of fish are unable to ingest it
because:
a) They move very fast
b) It does not have a bad odor
c) It is easily soluble in water
d) Cheaper

67. Animals that can tolerate a narrow range of salt concentrations are called:
a) Euryhaline
b) Stenohaline
c) Both a & b
d) None

68. Animals that can tolerate a wide range of salt concentrations are called:
a) Euryhaline
b) Stenohaline
c) Oligohaline
d) None
69. The percentage of NPN compounds in teleosts is:
a) 9-18%
b) 20-25%
c) 30-35%
d) 40-45%

70. One horsepower (1 hp) is equal to:

a) 742 watts
b) 539 watts
c) 746 watts
d) None

71. Kelvin is the absolute scale of:

a) Celsius
b) Fahrenheit
c) Rankine
d) None

72. Organic fertilizers include:

a) NPK
b) Urea
c) Cow dung
d) Super phosphate

73. Trimethylamine is excreted by:

a) Marine teleosts
b) Amphibians
c) Africa
d) All the above

74. A lotic habitat is:

a) Stagnant
b) Standing water
c) Running water
d) Both a & b

75. Pla-ra is a:
a) Lactic acid fermented product
b) Acetic acid fermented product
c) Marinated product
d) Cured product

76. Weak electrical signals produced by the transducer of an echo sounder are amplified by:
a) Receiver
b) Transducer
c) Transmitter
d) None

77. A special type of heavy drums used in trawl net operation is:
a) Winches
b) Snatch block
 c) Stern ramp
d) None

78. Infectious hematopoietic necrosis (IHN) is a:

a) Bacterial disease
b) Acute viral disease
c) Fungal disease
d) Caused by protozoa

79. Methyl testosterone is used for:

a) Faster growth
b) Better color in fishes
c) Sex inversion
d) Preventing deformities

80. The Ampulla of Lorenzini in fishes is a:

a) Thermoreceptor
b) Photoreceptor
c) Rheoreceptor
d) None

81. Estuarine animals are:

a) Stenohaline
b) Oligohaline
c) Euryhaline
d) None

82. The migration where animals never return to the starting place is:
a) Immigration
b) Emigration
c) Anadromous migration
d) None

83. Dropsy is caused by:

a) Virus
b) Fungi
c) Bacteria
d) Algae

84. Fragillaria oceanica in large numbers is an indication of the abundance of:

a) Oil sardine
b) Mackerel
c) Barracuda
d) None

85. The word "ecosystem" was coined by:

a) Hynes
b) Secchi
c) A.G. Tansley
d) None
86. The instrument used for testing the gel strength of surimi is:
a) Torrymeter
b) Rheometer
c) Gell meter
d) Both b & c

87. The ecological pyramid was first described by:

a) Schwan
b) Charles Elton (1927)
c) Emilton
d) None

88. The primary hematopoietic organ of fish is:

a) Head kidney

89. Catfishes breed:

a) Once in a year
b) Two years once
c) Three years once
d) None

90. The word ________ signifies an out-of-school system of education:

a) Extension
b) Research
c) Social science
d) Economics

91. Pepsinogen is secreted by:

a) Stomach
b) Most cells of liver
c) Small intestine
d) Buccal cavity

92. An adjuvant is a substance that:

a) Enhances immune response
b) Inhibits immune response
c) Degrades immune response
d) None

93. Paddle wheel aerators are ________ type of aerators:

a) Gravity
b) Surface
c) Turbine
d) Submersible

94. In an ecosystem where the biomass of producers is less and that of consumers is more, it is
called:
a) Upright pyramid
b) Horizontal pyramid
c) Inverted pyramid
d) None
95. Dehydration of fish is called:
a) Artificial drying
b) Natural drying
c) Both a & b
d) None of these

96. A drifter is a:
a) Purse seiner
b) Trawler
c) Gill netter
d) Long liner

97. PRA stands for:

a) Participatory Research Appraisal
b) Participatory Rural Appraisal
c) Public Rural Appraisal
d) None

98. One nautical mile is equivalent to:

a) 1.852 km
b) 1.852 m
c) 1.852 mm
d) 1.852 cm

99. Monosodium glutamate is added in fish products as a:

a) Flavor enhancer
b) Stabilizer
c) Preservative
d) Emulsifier

100. ROM (read-only memory) is ________ in nature:

a) Volatile
b) Non-volatile
c) May or may not be volatile
d) None

101. The net widely used both in marine and inland waters throughout the world is:
a) Trammel net
b) Gill net
c) Trawl net
d) None

102. Which of these three codons is a stop (termination) codon?

a) UGA
b) UAU
c) UAC
d) None of the above

103. It is formed when a river flows into a tideless sea:

a) Salt wedge estuaries
b) Well-mixed estuaries
 c) Partially mixed estuaries
d) None

104. One kilobyte is equal to:

a) 1024 bits
b) 1025 bits
c) 1026 bits
d) 1027 bits

105. RADAR stands for:

a) Radio Detection and Ranging
b) Rapid Detection Ranging
c) Radio Direction and Ranging
d) None

106. A series of islands is called:

a) Archipelago
b) Lagoon
c) Islet
d) Atoll

107. Income effect and substitution effect basically govern:

a) Supply curve
b) Demand curve
c) Market equilibrium price
d) Production curve

108. World Fish Migration Day is celebrated on:

a) 21st May
b) 21st June
c) 21st November
d) 21st July

109. Furunculosis is caused by:

a) Renibacterium salmoninarum
b) Aeromonas salmonicida
c) Vibrio salmonicida
d) Vibrio anguillarum

110. Sacculina is a:
a) Crustacean parasite on crabs
b) Fungal parasite on shrimps
c) Protozoan parasite on fish

111. The difference between penaeid and non-penaeid prawn is:

a) 2nd abdominal segment
b) 5th thoracic leg
c) 4th thoracic leg
d) 3rd abdominal segment

112. Commonly used anesthetic drugs include:

a) DMSO
 b) MS222
c) Quinoldine
d) None

113. The larval stage of a mussel is:

a) Nauplius
b) Trochophore
c) Megalopa
d) Zoea

114. Bioluminescence is otherwise called:

a) Winter sleep
b) Living light
c) Flash light
d) None

115. Most spoilage bacteria do not grow at a water activity (aw) less than:
a) 0.65
b) 0.8
c) 0.9
d) 1.0

116. ________ is used for joining various lines and ropes:

a) D Shackle
b) Eye bolt shackle
c) Butterfly
d) None

117. An example of black mangroves is:

a) Avicennia
b) Rhizophora
c) Both a & b
d) None

118. The major carbohydrate present in fish is:

a) Glucose
b) Glycogen
c) Lactose
d) None

119. The most common joint used in keels, shelves, clamps, and other longitudinal
structures is:
a) Lap joint
b) Scarf joint
c) Butt joint
d) None

120. Eel is a:
a) Catadromous
b) Anadromous
 c) Riverdromous
d) None

121. A lake where the water never cools below 4°C and is stratified is called:
a) Polar lake
b) Tropical lake
c) Temperate lake
d) None

122. The most commonly used source of gamma rays in food irradiation is:
a) Cesium-137
b) Cobalt-60
c) Carbon-14
d) Both b & c

123. The transverse curvature of the deck from the centerline down to the sides is
called:
a) Sheer
b) Camber
c) Bilge
d) Tumble home

124. Boat day is the measure of:

a) Fish catch in a day
b) Calculation of MSY
c) Fish catch by a boat

125. Kupffer’s organ is found in:

a) Kidney
b) Liver
c) Brain

126. The first largest digestive organ in fishes is:

a) Liver
b) Stomach
c) Kidney

127. The second largest digestive organ in fishes is:

a) Liver
b) Stomach
c) Kidney

128. Which of the following is an example of in-situ conservation?

a) National Park
b) Gene banking
c) Tissue culture

129. Which of the following is an example of in-situ conservation?

a) National Park
b) Gene banking
c) Tissue culture
130. The membrane of the ovary attached to the air bladder is called:
a) Mesochia
b) Mesovaria

131. An example of a submerged plant is:

a) Hydrilla
b) Najas
c) Eichhornia
d) Typha

132. The quality of fish is related to the estimation of:

a) K value
b) L value
c) P value

133. Cage culture originated in:

a) Kampuchea
b) Japan
c) India
d) China

134. A suitable species for sea cage culture is:

a) Magur
b) Salmon
c) Tuna
d) Cobia

135. Whirling disease is caused by:

a) Myxobolus cerebralis

136. Ich disease is caused by:

a) Ichthyophthirius multifiliis

137. Ich disease is also known as:

138. Lieberg’s Law is related to:

139. The dominant shrimp on the Kerala coast is:

a) Heterocarpus
b) Metapenaeus
c) Panulirus

140. Ox-bow lakes are mostly distributed in:

a) Assam
b) Tripura
c) West Bengal

141. Ox-bow lakes are mostly distributed in:

a) Assam
b) Tripura
c) West Bengal
 142. Swamps are also known as:
a) Daldal

143. Acrosome is found in:

a) Sperm
b) Ovary

144. The liquid medium used for fish preservation is:

a) CSW
b) Brine

145. Which of the following is a pear-shaped lake?

a) Chilka
b) Kolleru
c) Pulicat

Matching Questions

1. Match the following algae with their descriptions:

a) Chaetoceros
b) Spirulina
c) Dunaliella
d) Porphyra
e) Chlamydomonas

o (i) Nori

o (ii) Algae rich in vitamins

o (iii) Bacillariophyta

o (iv) Chlorophyta

o (v) Algae rich in protein

2. Match the following migration types with their corresponding species:

a) Potamodromous
b) Catadromous
c) Anadromous
d) Oceanodromous
e) Vertical migration

o (i) Eel

o (ii) Trout

o (iii) Tuna

o (iv) Swordfish

o (v) Salmon

3. Match the following lakes with their locations:

a) Loktak lake
b) Chilka lake
 c) Samphar lake
d) Pulicat lake
e) Kolleru lake

o (i) Andhra Pradesh

o (ii) Tamil Nadu

o (iii) Orissa

o (iv) Manipur

o (v) Rajasthan

4. Match the following terms with their descriptions:

a) Sodium hypochlorite
b) Plate freezer
c) Freezer burn
d) Monosodium glutamate
e) Histamine

o (i) Taste enhancer

o (ii) Dehydration & oxidation

o (iii) Germicide

o (iv) Scombroid

o (v) -40°C

5. Match the following fishing gear or terms with their descriptions:

a) Multirig trawling
b) Trammel net
c) Dredges
d) Dugout
e) Ammonia

o (i) Otter board present

o (ii) 3 layers of webbing

o (iii) Mollusc

o (iv) Calm area

o (v) R 717

6. Match the following terms with their descriptions:

a) Liquid nitrogen
b) Citric acid
c) Sea cucumber
d) Open thelycum
e) Gulf stream

o (i) -196°C
 o (ii) Chelating agent

o (iii) H. scabra

o (iv) Aristeidae

o (v) Internal wave

7. Match the following plankton types with their descriptions:

a) Holoplankton
b) Meroplankton
c) Euplankton
d) Pseudoplankton
e) Fjord

o (i) Debris mingled in plankton

o (ii) True plankton

o (iii) Free-floating throughout their life

o (iv) U-shaped estuary

o (v) Free-floating only at certain times

8. Match the following marine species with their scientific names:

a) Electric ray
b) Blood clam
c) Deep sea spiny lobster
d) Sand lobster
e) Pointed spiny lobster

o (i) Torpedo nobiliana

o (ii) Anadara granosa

o (iii) Puerulus sewelli

o (iv) Thenus orientalis

o (v) Panulirus homarus

9. Match the following algal classes with their descriptions:

a) Chlorophyceae
b) Bacillariophyceae
c) Chrysophyceae
d) Haptophyceae
e) Phytoflagellate