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Objective type questions for JRF/SRF/NET/ARS Exams for Fisheries Science | Objective type questions for Fisheries Science with answers

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Multiple or Objective choice questions for JRF/SRF/NET/ARS Exams for Fisheries Science 

Objective Questions in  Aquaculture and Fisheries Science 

Below see
questions for JRF/SRF/NET/ARS Exams for
Fisheries Science. Kindly go through it and backcheck answers to all questions through
online or offline resources. If, you have doubt kindly let us know.

Note: These questions have been
collected by the College of Fisheries Ratnagiri, So all staff of the College of
Fisheries Ratnagiri needs special thanks for the same.

            Multiple choice questions for
JRF/SRF/NET/ARS Exams for Fisheries Science

1
In 
fishes,  phenylalanine  is 
spared  by  
a
Methoionine
b
Tyrosine
c
Lysin
d
None 
of  the  above
2
Biosynthetic 
precursor  of  Ketone 
bodies  is 
a
Acetyl  Co-A
b
Suscinyl 
Co-A
c
Adrenyl 
Co-A
d
All  of  the 
above
3
Natural 
antioxidant  is 
a
Alpha 
tocopherol
b
BHA
c
BHT
d
None 
of  the  above
4
Pepsinogen 
is  secreted  by 
a
Stomach
b
Small 
Intestine 
c
Buccal 
cavity
d
Liver
5
The 
frustules  of  diatoms 
are  made  up 
of 
a
Calcium
b
Carbonate
c
Phosphate
d
Silica
6
The 
method  of  rearing 
Daphnia  in  a 
culture  medium  made 
up  of  soil, 
manure  and  water 
is  known  as 
a
Autotrophic
b
Detrital
c
Xenic
d
Axenic
7
Diatoms 
forming  a  long 
chain  like  structure 
are  known  as 
a
Centricae
b
Pennatae
c
Bathypelagic
d
Tychopelagic
8
In 
general,  Artemia  grows  from 
nauplius  to  adult 
stages  in  ______ 
days 
a
5
b
6
c
7
d
8
9
Type 
of  ploidy  occurs 
when  1  or 
more  chromosomes  are 
gained  or  lost 
due  to  improper 
cell  division.
a
Autopolyploidy
b
Allopolyploidy
c
Aneuploidy
d
Euploidy
10
The 
type  of  mutation 
in  which  purine 
is  substituted  by 
pyrimidine  or  vice 
versa
a
Transversion
b
Translocation
c
Duplication
d
Deletion
11
Name 
the  process  of 
mating  of  F1  hybrid 
to  one  of 
its  parents. 
a
Intergressive 
hybridization
b
Parental 
line
c
Test  cross
d
Back  cross
12
 Type  of 
interaction  in  which 
Allele  at  one 
locus  alters  the 
phenotypic  expression  of 
an  allele  at 
other  locus 
a
Modifying 
gene
b
Epistatis 
interaction   
c
Complementary 
gene  action
d
Masking 
gene  action
13
In India peak
breeding season of common carp is ———-.
a
Summer
b
Winter
c
Monsoon
d
None of the above
14
Carp brood fishes
are normally stocked at the rate of ———- kg/hectare in brood stock
ponds.
a
1500 to 2000
b
500 to 700
c
500
d
700 to 1000
15
Pituitary extract is
preserved with ———-.
a
Absolute alcohol
b
Glycerine
c
Acetone
d
Freezing


Multiple or Objective choice questions for Fisheries Science 
16
———- is a
combination of 63% FSH and 34% LH.
a
Synahorin
b
Puberogen
c
Ovaprim
d
Prolan
17
———– is a leading country in export of ornamental fishes.
a
USA
b
UK
c
Singapore
d
India
18
Neon tetra breeds in ————- waters.
a
Soft and acidic
b
Soft and alkaline
c
Hard and acidic
d
Hard and alkaline
19
Free swimming larvae of ———— feed on mucous of their parents.
a
Angel
b
Severum
c
Goldfish
d
Discus
20
Vallisneria spiralis
propagates by means of ———.
a
Runners
b
Top cutting
c
Development of
plantlets on stem
d
Non of the above
21
Adults of Lates calcarifer
migrate towards ____________ for spawning.
a
River
b
Estuary
c
Sea
d
Origin of river
22
_______ can be used to reduce seepage losses from ponds.
a
Bentonite        
b
Zeolite
c
Carbamide
d
Hypochlorite
23
Paddle wheel aerator is an example of _______ type of aerator.
a
Diffuser          
b
Gravity
c
Surface
d
Turbine
24
_______ can be constructed in dike near the water edge to stop acid
runoff during rains.
a
Berm   
b
Core
c
Mound
d
Crown
25
The larvae of mud crab pass through ——————–zoeal stages
before metamorphosing into megalopa stage.
a
Four
b
Six
c
Seven
d
Five
26
Generally EDTA is added as chelating agent in penaeid larval rearing
tanks at the rate of ———————mg L-1
a
10
b
100
c
1000
d
0.1
27
——————-colour is most commonly applied on inside surface of
maturation tanks in penaeid shrimp hatcheries.
a
White
b
Yellow
c
Green
d
Black
28
The larvae of Macrobrachium
rosenbergii exhibit schooling behavior up to ——————- stage.
a
Fifth
b
Seventh
c
Eighth
d
Ninth
29
The most important
characteristic of an antibody utilized for detection of pathogen is
a
Valence
b
Specificity
c
Memory
d
Quantity
30
The primary lymphoid
organs in teleosts are ……..
a
Spleen and epigonal
organ
b
Thymus and head
kidney
c
Liver and intestine
d
Skin and bone marrow
31
Interferons are cellular
proteins produced mainly in response to ……..
a
Virus infection
b
Bacterial infection
c
Fungus infection
d
Parasitic infection
32
Match the pairs
Virus
type
Disease
caused
1
Iridovirus
A
Lymphocystis
2
Herpesvirus
B
Channel Catfish Viral
Diseases
3
Birnavirus
C
Infectious
Pancreatic Necrosis Virus
4
Orthomixovirus
D
Infectious Salmon
Anaemia
a
1-A, 2-B, 3-C, 4-D
b
1-B, 2-C, 3-D, 4-A
c
1-C, 2-D, 3-A, 4-B
d
1-D, 2-A, 3-B,4- C
33
The sequence
5´-AGTCTGACT-3´ in DNA is equivalent to which sequence in RNA?
a
5´-AGUCUGACU-3´
b
5´-UGTCTGUTC
-3´
c
5´-UCAGUCUGA-3´
d
5´-AGUCAGACU-3´
34
Denaturation of
double stranded DNA involves….
a
Breakage into short
double stranded fragments
b
Separation into
single strands
c
Hydrolysis of DNA
backbone
d
Cleavage of the
bases from the sugar phosphate backbone
35
The number of
replicon in a typical mammalian cell is….
a
40-200
b
400
c
1000-2000
d
50,000-1,00,000
36
In prokaryotes the
lagging strand primers are removed by…
a
3´ to 5´ exonuclease
b
DNA ligase
c
DNA polymerase I
d
DNA polymerase III
37
Polyculture of
fishes were first developed in–
a
India
b
China
c
Thailand
d
Taiwan
38
The average fish
consumption in urban part of India
is
a
1 to 2
kg/person/year
b
3 to 5
kg/person/year
c
6 to 8
kg/person/year
d
8 to 10
kg/person/year
39
Measurment of
carbonate and bicarbonate ions is a–
a
Hardness
b
Alkalinity
c
Transparency
d
Turbidity
40
The book Classic of
Fish Culture was written by–
a
H. B. Wilson
b
Fan Lei
c
T. V. R. Pillay
d
V. G. Zingran


Objective Questions in  Aquaculture and Fisheries Science 
41
Pistia is a type of
weed
a
Floating
b
Submerged
c
Marginal
d
Algal
weed
42
The stocking density
of freshwater prawn for monoculture practice is
a
20,000 numbers/ha
b
40,000 numbers/ha
c
10,000 numbers/ha
d
25,000 numbers/ha
43
Which chemical is
used to control aquatic insect?
a
Hi-oxide
b
Bleaching powder
c
Lime
d
Formalin
44
Which is the active
ingredient content in Derris Root Powder?
a
Saponin
b
Rotenone
c
Both 1 and 2
d
None of this
45
Fishes  feeding 
on  single  type 
of  feed  are 
known  as 
a
Stenophagic
b
Monophagic
c
Euryphagic
d
Carnivorous
46
The  complex 
of  protein  with 
carbohydrate  is  known 
as 
a
Lipoprotein
b
Glycoprotein 
c
Metalloprotein
d
None  of 
the  above
47
The  blood 
of  freshwater  fishes  
has  an  osmotic 
pressure  of   
a
300 mosm/lit
b
200 mosm/lit
c
400 mosm/lit
d
100 mosm/lit
48
Major  nitrogenous 
waste  products  excreted 
by  fish
a
Urea
b
Ammonia
c
Uric  acid
d
Amino  acid
49
In  batch 
culture  of  algae, 
the  volume  of 
innoculum  should  be 
_________ %  of  the 
final  culture  volume. 
a
2 -10
b
20 – 30
c
15 – 25
d
18 -25
50
The  alveolar 
layer  of  Artemia 
cyst  can  be 
dissolved  by  the 
oxidation  treatment  with   
a
Calcium 
b
Sodium
c
Carbide
d
Hypochloride




51
The  brood 
pouch  of  artemia 
female  is  situated 
just  behind  the 
_________  pair  of  thoracopods. 
a
10th
b
9th
c
11th
d
12th
52
For  lab 
culture  of  micro 
algae,  artificial  illumination  should 
be  available  for 
minimum  for  ___________ 
hours.
a
12
b
24
c
18
d
6
53
Type  of 
inversion  which  involves 
only  one  arm 
of  chromosome  without 
involvement  of  centromere
a
paracentric
b
pericentric
c
acentric
d
dicentric
54
Name  the 
enzyme  due  to 
which  the  non 
sister  chromatids  of 
homologous  pair  twist 
over  each  other 
a
Klenow  enzyme
b
polymerase  enzyme
c
endonuclease 
d
ligase 
55
Term  used 
for  Back  crossing 
to  one  of 
the  parental  lines
a
Isogenic  lines
b
Introgressive  hybridization 
c
Inter-racial  hybridization
d
Intergressive  hybridization
56
Term  used 
for  the  region 
from  5’  initiator 
codon  to  3’ 
terminal  codon
a
TATA  Box
b
CAAT  Box
c
Open  reading 
frame
d
Sense  codon
57
The specific gravity
of Chinese carp eggs is ———- that of IMC.
a
More than
b
Equal to
c
Less than
d
None of the above
58
Each milliliter of
ovaprim, a synthetic hormonal preparation contains ———- sGnRH and
———- domperidone.
a
20 mg, 10µg
b
0.2 mg, 10µg
c
20 µg, 10 mg
d
2.0 mg, 10µg
59
A product of
incubation period in days and average temperature during incubation is called
as ———-.
a
Latency period
b
Equilibrium time
c
Degree days
d
None of the above
60
Aerial respiration
in Clarius batrachus commences after ———- days of hatching.
a
20 to 22
b
4 to 5
c
10 to 12
d
5 to 10
61
———– is a
leading country in export of ornamental fishes.
a
USA
b
UK
c
Singapore
d
India
62
Discus breeds in
————- waters.
a
Soft and acidic
b
Soft and alkaline
c
Hard and acidic
d
Hard and alkaline
63
In male live bearing
fishes, anterior rays of ——– fin are modified in to gonopodium.
a
Dorsal
b
Pectoral
c
Pelvic
d
Anal
64
Eggs of goldfish are
———- in nature.
a
Floating
b
Adhesive
c
Semi-adhesive
d
None of the above
65
_______ zone is
generally preferred for semi-intensive farming  system.
a
Inter-tidal          
b
Supra-tidal
c
Low lying areas
d
None of  the above
66
Ca( Mg)CO3 is
commonly known as ________.
a
Agricultural lime
stone
b
Burnt lime       
c
Hydrated lime
d
Dolomite
67
Bag nets are
provided with _____ line to avoid overloading of shrimps.
a
Lazy   
b
Lure
c
Scare
d
Loope
68
Particles of lime
smaller than _______ micron are most effective.
a
50
b
40
c
55
d
60
69
Protozoeal larval
stages of Penaeus monodon feed on 
————–
a
Diatoms
b
Freshly hatched
Artemia nauplii
c
Rotifers
d
None of the above

Objective Questions in  Aquaculture and Fisheries Science 
70
————— are
generally used for production of cultchless spats.
a
Polythene sheets
b
Coconut shells
c
Oyster shells
d
Roofing tiles
71
——————
larva of Holothuria scabra is sleeper shaped.
a
Doliolaria
b
Pentacula
c
Auricularia
d
None of the above
72
The Japanese system
of penaeid shrimp hatchery is also known as ——- system.
a
Unfertilized
b
Community
c
Feeding
d
Small larval rearing
tank




Multiple or Objective choice questions for Fisheries Science 
73
—– is the major
haematopoietic organ in fish
a
Bone marrow
b
Spleen
c
Head kidney
d
Thymus
74
—– is an iron
binding glycoprotein that deprives bacterial pathogens of iron.
a
Transferrin
b
Interferon
c
Metallotheonin
d
C-reactive protein
75
Deficiency of
——– gives rise to scoliosis and lordosis in fish
a
Vitamin A
b
Vitamin B
c
Vitamin C
d
Vitamin D
76
Match the pairs
Deficiency
Symptoms
1
Manganese
A
Lower
hatchability/ Skeletal deformities
2
Phosphorous
B
Anorexia and dark
coloration
3
Selenium
C
Depressed growth
4
Iron
D
Hypo chromic
normocytic anemia
a
1-A, 2-B, 3-C, 4-D
b
1-B, 2-C, 3-D, 4-A
c
1-C, 2-D, 3-A, 4-B
d
1-D, 2-A, 3-B,4- C
77
Transformation is…
a
The take up of a
plasmid into a bacterium
b
The expression of a
gene in a bacterium
c
The take up of a
bacteriophage into a bacterium
d
The isolation of a
plasmid from a bacterium
78
In agarose gel
electrophoresis…
a
DNA migrates towards
negative electrode
b
Super coiled
plasmids migrate slower than their nicked counterparts
c
larger molecules
migrate faster than smaller molecules
d
Ethidium bromide can
be used to visualize the DNA
79
Which one of the
following statements about PCR is false
a
The PCR cycle
involves Denaturation of the template, annealing of the primers and
polymerization of nucleotides.
b
PCR uses thermo
stable polymerases
c
Ideally, PCR primers
should be of similar length and G + C content
PCR optimization
usually includes varying the magnesium concentration and the polymerization
temperature
d
If PCR was 100%
efficient, one target molecule would amplify to 2n after n cycles
80
Which of the
following list of features correctly apply to the genetic code?
a
Triplet, degenerate,
nearly universal, comma-less, non overlapping
b
Triplet, universal,
comma-less, degenerate, non overlapping
c
Overlapping,
triplet, comma-less, degenerate, nearly universal
d
Overlapping,
comma-less, non degenerate, nearly universal, triplet
81
First scientific
fish farm in India
was constructed under the guidance of —
a
H. B. Vora
b
H. B. Wilson
c
G. E. Fogg
d
Lo-Chai Chen
82
Pen culture is a —
a
Barrier in bay
b
Fixed or floating
c
Both 1 and 2
d
Raceway
83
Two or more species
culture in the same pond is known as —
a
Polyculture
b
Monoculture
c
Raceway culture
d
Pen culture
85
Cold water fish
culture can be undertaken at temperature
a
More than 180C
b
Less than 180C
c
Above 300C
d
Both 1 and 2
86
Hydrilla is a type
of weed
a
Algal weed
b
Submerged weed
c
Marginal weed
d
Floating weed
87
Cyprinus carpio
nudus is known as —
a
Mirror carp
b
Scale carp
c
Leather carp
d
Major carps
88
Ranatra is a —
a
Back swimmer
b
Water strider
c
Water stick insect
d
Giant bug
89
Which of the
following is a predatory catfish?
a
Clarius batrachus
b
Lates calcarifer
c
Catla catla
d
Chanos chanos
90
Ammonia  produced 
in  the  liver 
of  fish  is 
converted  into  non 
toxic  form  in 
the  blood  called 
a
Glutamine
b
Uric  acid
c
Creatine
d
Creatinine
91
Water  stability 
of  shrimp  feed 
should  be  minimum 
of 
a
30  min
b
45  min
c
2  hrs
d
24  hrs
92
The  feed 
intake  can  be 
increased  by  addition 
of 
a
Antioxidents 
b
Pigments
c
Attractants
d
None  of 
the  above
93
The  digestion 
of  protein  is 
efficient  in
a
Herbivorous  fishes
b
Carnivorous  fishes
c
Omnivorous  fishes
d
Detritivorous  fishes
94
Unfertilized  mictic 
eggs  of  rotifers 
produces 
a
Male
b
Female
c
Cyst
d
None  of 
the  above
95
The  cells 
of  marine  algae 
are  washed  with 
isotonic  ­­___________  to 
remove  salts  without 
bursting  of  cells.
a
Ammonium  formate
b
Ammonium  chloride 
c
Ammonium  nitrate 
d
Ammonium  sulphate
96
Constant  illumination  is 
required  for  culture 
of 
a
Flagellates 
b
Rotifers
c
Diatoms
d
Artemia
97
While  harvesting 
of  algal  cells, 
following  chemical  is 
used  for  coagulation 
and  precipitation  of 
cells  at  bottom
a
Ferric  chloride
b
Ammonium  chloride
c
Ferric  sulphate
d
Ammonium  nitrate  
98
Name  the 
type  of  translocation  in 
which  exchange  of 
segments  between  two 
non-homologous  chromosomes  occur 
a
Reciprocal  translocation
b
Shift  translocation
c
Simple  translocation
d
Reverse  translocation
99
The  phenomenon 
of  the  production 
of  additional  or 
secondary  phenotypes  because 
of  influence  of 
gene
a
Complementary  gene 
effect
b
Inhibitory  effect
c
Masking  effect
d
Pleiotrophism
100
Name  the 
type  of  mutation 
that  abolishes  expression 
of  a gene
a
Null  Mutation
b
Dominant  mutation
c
Recessive  mutation
d
Co-dominant  mutation



Objective Questions in  Aquaculture and Fisheries Science 



 Answer key :
                            

Q. No.
Ans
Q. No.
Ans
Q. No.
Ans
Q. No.
Ans
1
b
12
b
23
c
34
b
2
a
13
b
24
a
35
d
3
a
14
a
25
d
36
c
4
a
15
b
26
a
37
b
5
b
16
b
27
d
38
b
6
b
17
c
28
a
39
b
7
d
18
a
29
b
40
b
8
d
19
d
30
b
41
a
9
c
20
a
31
a
42
b
10
a
21
c
32
a
43
a
11
d
22
a
33
a
44
b

Q. No.
Ans
Q. No.
Ans
Q. No.
Ans
Q. No.
Ans
45
b
56
c
67
a
78
d
46
b
57
a
68
d
79
d
47
a
58
c
69
a
80
a
48
b
59
c
70
a
81
b
49
a
60
c
71
c
82
a
50
d
61
c
72
b
83
a
51
c
62
a
73
c
84
–
52
c
63
d
74
a
85
b
53
a
64
b
75
c
86
c
54
c
65
b
76
a
87
c
55
b
66
d
77
a
88
c

Q. No.
Ans
Q. No.
89
a
100    a
90
c
91
c


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