In a productive soil, what should be the phosphorus level
A
6-12 mg/g
B
>12 mg/g
C
3-6 mg/g
D
<2 mg/g
Question 3Single Answer
Blue colour of sea water is due to
A
Diffraction
B
Reflection
C
Scattering effect of light
D
Integration
Question 4Single Answer
If temperature, salinity increases, what will happen to dissolved oxygen of water?
A
Decrease
B
Increase
C
Remain constant
D
None of these
Question 5Single Answer
Trichodesmium causes________ which kills the fishes and other organisms
A
Blue tide
B
Green tide
C
Red tide
D
White tide
Question 6Single Answer
Chlorotetracycline is obtained from
A
Virus
B
Metazoans
C
Protozoans
D
Bacteria
Question 7Single Answer
Mother of probiotics is
A
Streptococcos
B
Lactobacillus
C
E.coli
D
None of the above
Question 8Single Answer
Which of the following constitutes the edaphic factors?
A
Water
B
Climate
C
Soil
D
All of the above
Question 9Single Answer
Which of the following soils are considered suitable for fish farms?
A
Sandy
B
Loamy
C
Clayey loam
D
Alluvial
Question 10Single Answer
Soil suitable for pond construction should have the following characteristics
A
High water retention capacity
B
Impervious to seepage
C
Nutrient rich
D
All of the above
Question 11Single Answer
If the moistened kneaded sample of the soil is rolled into a bar and then bent into an U-shape ring such that the soil remains intact or does not breaks off. It is ________ for pond construction
A
Unsuitable
B
Suitable
C
Productive
D
None of the above
Question 12Single Answer
Among the following which parameters are considered before constructing a fish farm
A
Topography of land
B
Soil type and quality
C
Source of water
D
All of the above
Question 13Single Answer
Ideal pH of soil in ponds should be
A
6.5-7.5
B
>9
C
<6
D
None of these
Question 14Single Answer
Ideal pH of water in ponds should be
A
7.5-8.5
B
>10
C
<5.5
D
3-6
Question 15Single Answer
Alkalinity in ponds is caused due to
A
Carbonates
B
Bicarbonates
C
Both (a) and (b)
D
Carbon dioxide
Question 16Single Answer
______is called the reservoir of CO2 in pond
A
Calcium
B
H+ ions
C
Carbonates
D
All of the above
Question 17Single Answer
Hardness in water is caused due to divalent cations of
A
Ca
B
Mg
C
P
D
Both (a) and (b)
Question 18Single Answer
If the diameter of the soil particle is <0.002 mm the soil will be
A
Clayey
B
Loamy
C
Sandy
D
Silty
Question 19Single Answer
Liming helps in the following
A
Neutralizes the acidic pH into a slightly alkaline level
B
Increases alkalinity and hardness
C
Has prophylactic effects
D
All of the above
Question 20Single Answer
The peripheral structure of the pond that is raised around the impoundment to contain or impound the water is called
A
Berm
B
Slope
C
Dyke
D
All of the above
Question 21Single Answer
Difference between drainable and undrainable pond lies in
A
Provision of inlet and outlet
B
Sparse sloping of pond bottom
C
Dykes
D
Both (a) and (b)
Question 22Single Answer
Ideal slope of the pond in case it is built with clayey soil is
A
2:1
B
4:1
C
1:1
D
1:2
Question 23Single Answer
Transparency in ponds is measured by
A
Spectrophotometer
B
Calorimeter
C
Secchi disk
D
Flame photometer
Question 24Single Answer
D.O. in ponds is measured by the following method
A
Winkler's method
B
Argentometric method
C
Anion-cation exchange method
D
All of the above
Question 25Single Answer
Zeolite is used for
A
Increasing pH
B
Increasing alkalinity
C
Increasing transparency
D
All of the above
Question 26Single Answer
Application of gypsum in a pond corrects the
A
pH
B
Alkalinity
C
Hardness
D
Turbidity
Question 27Single Answer
Application of Dolomite corrects the
A
pH
B
Hardness
C
Alkalinity
D
All of the above
Question 28Single Answer
The liming efficiency is highest in
A
Quicklime (Cao)
B
Limestone (CaCO3)
C
Dolomite (CaMgCO3)
D
Hydrated lime (Ca(OH)2]
Question 29Single Answer
Concentration of ammonia in water beyond_____ is toxic to fish
A
1ppm
B
0.1 ppm
C
0.01 ppm
D
5 ppm
Question 30Single Answer
Concentration of H2S in the pond bottom should be
A
1 ppm
B
5 ppm
C
10 ppm
D
0 ppm
Question 31Single Answer
Both calcium and magnesium cations can be produced by
A
Quicklime
B
Dolomite
C
Limestone
D
Hydrated lime
Question 32Single Answer
Following substance can be added to bring down the pH of an alkaline soil
A
Dolomite
B
Zeolite
C
Lime
D
Ammonium sulphate
Question 33Single Answer
Following substance can be added to increase the pH of an acidic soil
A
Lime
B
Ammonium nitrate
C
Zeoloite
D
Both (a) and (b)
Question 34Single Answer
Temparature and oxygen in pond water are ______proportional
A
Directly
B
Inversely
C
Constant
D
None of the above
Question 35Single Answer
Which is called as the mother of probiotics?
A
Nitrosomonas
B
Latic acid bacteria
C
Nitrobactor
D
Streptococcus
Question 36Single Answer
The common marine blue green algae responsible for causing red tide is
A
Spirulina sp.
B
Nostoc sp.
C
Trichodesmium sp.
D
Microcystis sp.
Question 37Single Answer
Which of the following is a bottom soil sampler?
A
Casell bottle
B
Eckman grab
C
Van dorn sampler
D
None
Question 38Single Answer
Phenomenon of biomagnification is shown by
A
Heavy metals
B
Domestic sewage
C
Distillary waste
D
None of these
Question 39Single Answer
The elevation of water level during tides, from mean sea level is called
A
Tidal difference
B
Tidal interval
C
Tidal amplitude
D
Tide value
Question 40Single Answer
Formation of algal blooms in ponds due to over-fertilisation is an example of _______pollution
A
Physical
B
Chemical
C
Biological
D
None
Question 41Single Answer
Following is an example of chemical pollution
A
Construction of dams and barrages.
B
Eutrophication
C
Oil spillage
D
Disease outbreak
Question 42Single Answer
Sewage is generally rich in
A
Nitrogen, Phosphorus
B
Ammonia
C
Carbon dioxide
D
All of the above
Question 43Single Answer
Sewage contains_____ water
A
30 per cent
B
50-60 per cent
C
85-90 per cent
D
99 per cent
Question 44Single Answer
Following is a disease causing pathogen related to humans, often found in Sewage
A
Aeromonas
B
Pseudomonas
C
Faecal streptococci
D
Desulphovibrio
Question 45Single Answer
With increasing organic carbon content in the pond bottom, B.O.D. of the pond_________
A
Remains constant
B
Decreases
C
Increases
D
Becomes zero
Question 46Single Answer
Leaves and twigs falling on the pond surface contribute as ______in due course of time.
A
Phytoplankton
B
Zooplankton
C
Periphyton
D
Detritus
Question 47Single Answer
The process by which organic matter in the pond bottom decays and
decomposes to release essential nutrients into the pond environment is called
A
Nutrient stratification
B
Nutrient recycling
C
Nutrient formation
D
Eutrophication
Question 48Single Answer
Red tides are caused by
A
Gymnodium sp.
B
Turbinellaria sp.
C
Vorticella sp.
D
Seaweeds
Question 49Single Answer
Following is an organo-phosphate pesticide
A
Calcium hypochlorite
B
Copper sulphate pentahydrate
C
Ammonium phosphate
D
Malathion
Question 50Single Answer
In a sewage treatment plant, use of duckweeds in oxidation ponds to absorb the excess of nutrients is an example of
A
Bioremediation
B
Phytoremediation
C
Eutrophication
D
Oxidation
Important Questions Package
TNPSC Sub Inspector of Fisheries Exam Online Question Bank Package
Buy TNPSC Sub Inspector of Fisheries Important Questions, MCQ, question answer in Hindi & English. It will help you to score high marks in TNPSC Sub Inspector of Fisheries question bank 2026 in Online, PDF & Print study material.
+ Free Monthly Current Affairs, GK & more PDF Download
Sr.
Package Name
Amount
1.
TNPSC Sub Inspector of Fisheries Exam Paper I - English
Description : 1000 Question with Answer
₹181[₹500]
2.
TNPSC Sub Inspector of Fisheries Exam Paper II - English
Description : 1500 Question with Answer
₹181[₹500]
Fisheries Technology and Navigation
Question 51Single Answer
Control of ammonia in ponds by culturing Azolla is an example of
A
Bioremediation
B
Phytoremediation
C
Eutrophication
D
Oxidation
Question 52Single Answer
CRZ was set up in the year
A
1991
B
1988
C
1980
D
2000
Question 53Single Answer
CRZ is divided into______ zones
A
1
B
2
C
4
D
6
Question 54Single Answer
Dissolved Oxygen level in ponds is maximum at
A
4.00 am
B
12.00 am
C
4.00 pm
D
12.00 pm
Question 55Single Answer
Tuna, mackerel, sardine are asscociated with
A
Alfatoxin
B
Scombroid poisoning
C
Food poisoning
D
Darkening
Question 56Single Answer
Bio fertilizers are represented by
A
Blue green algae
B
Rhizobium
C
Azolla
D
All of the above
Question 57Single Answer
Scombroid poisoning involves conversion of
A
Lysine to isoleucine
B
Methionine to methyl mercaptan
C
Histidine into histamine
D
Phenylalanine into alkaline phenyl compounds
Question 58Single Answer
Fish flesh is rich in
A
Proteins
B
PUFA
C
Minerals
D
All of the above
Question 59Single Answer
The important factor of soil while choosing the fertilizer is
A
C:N Ratio
B
pH
C
Nutrient level
D
All of the above
Question 60Single Answer
Building block of cellulose is
A
Amino acid
B
Glucose
C
Fructose
D
Oleic acid
Question 61Single Answer
A food chain shows
A
One possible pathway for energy
B
Many possible pathways for energy
C
The amount of energy available to a producer
D
The amount of energy available to a consumer.
Question 62Single Answer
Decomposers are important to ecosystems because they
A
Are at the highest level of the energy pyramid
B
Change simple compounds in to more complex ones
C
Make nutrients available to producers for use
D
Change light energy into chemical through photosynthesis
Question 63Single Answer
Secondary productivity is the amount of biomass produced by
A
Secondary carnivores
B
Secondary plants in communities
C
Herbivores, detrivores and carnivores
D
Detritivores
Question 64Single Answer
Seaweed Nymphea produces–
A
Alginic acid
B
Agar
C
Caragenen
D
Biotoxin
Question 65Single Answer
Protein content of fish muscle is
A
10-15 per cent
B
12-25 per cent
C
15-24 per cent
D
25-35 per cent
Question 66Single Answer
The most abundant electrolyte in the body of living organisms is
A
Potassium
B
Chloride
C
Sodium
D
All of the above
Question 67Single Answer
One molecule of glucose on complete oxidation produces
A
30 ATP mole
B
38 ATP mole
C
40 ATP mole
D
45 ATP mole
Question 68Single Answer
Greater productivity can be achieved in
A
Long food chain
B
Short food chain
C
Detritus food chain
D
None of the three
Question 69Single Answer
Fish proteins are rich in
A
Lysine
B
Valine
C
Threonine
D
All of the above
Question 70Single Answer
The gut pH in fishes during digestion is reduced by the secretion of
A
Acetic acid
B
Hydrochloric acid
C
Formic acid
D
sulphuric acid
Question 71Single Answer
Primary productivity is defined as
A
The rate at which radiant energy is stored by producers
B
The rate at which radiant energy is lost by producers
C
An activity pertaining to animals
D
Reactions taking place in soils of pond
Question 72Single Answer
Digestion of protein and lipid is efficient in
A
Carnivorous fisheries
B
Herbivorous fishes
C
Omnivorous fishes
D
Detrivorous fishes
Question 73Single Answer
The plankton is
A
Red algae
B
Floating fauna
C
A large organism
D
Passively floating or drifting flora of microorganisms
Question 74Single Answer
Catabolism of protein leads to the release of
A
Nitrite
B
Methane
C
Nitrate
D
Ammonia
Question 75Single Answer
Individuals of same species in a particular locality constitute
A
Population
B
Community
C
Flora
D
Fauna
Question 76Single Answer
Primary haemopoietic organ of fish are
A
Thymus and GALT
B
Spleen and Thymus
C
Head kidney and Thymus
D
Head kidney and spleen
Question 77Single Answer
The cell membrane of gram positive bacteria contain
A
Only peptidoglycan layer
B
Only lipopolysaccharide layer
C
Peptidoglycan and an outer membrane
D
Peptidoglycan layer and lipopolysaccharide layer
Question 78Single Answer
The correct pathway of energy flow in an ecosystem is
The greatest O2 consuming organelle of the cell is
A
Lysosome
B
Golgi apparatus
C
Mitochondria
D
Ribosomes
Question 80Single Answer
The complete active enzyme is termed as
A
Apoenzyme
B
Prosthetic group
C
Cofactor
D
Holoenzyme
Question 81Single Answer
The first law of thermodynamics states that
A
Energy can neither be created nor destroyed
B
Energy may be transformed from one type to another
C
Both of the above
D
None of the above
Question 82Single Answer
Fatty acids are represented by the formula R-COOH, where R stands for
A
Alkaloid group
B
Aldehyde group
C
Alkyl group
D
None of the above
Question 83Single Answer
The fatty acid that is not synthesized by the body is called
A
Non-essential fatty acid
B
Synthetic fatty acid
C
Non-synthetic fatty acid
D
Essential fatty acid
Question 84Single Answer
Herbivores are called
A
Primary consumer
B
Secondary producer
C
All of the above
D
None of the above
Question 85Single Answer
Pepsinogen is secreted by
A
Stomach
B
Most cell of lives
C
Small intestine
D
Buccal cavity
Question 86Single Answer
Osmosis is the movement of solvent from
A
High concentration to low concentration
B
Low concentration to high concentration
C
One phase to another phase
D
Solid phase to liquid phase
Question 87Single Answer
Organism living on the bottom is called
A
Benthos
B
Neuston
C
Nekton
D
None of the above
Question 88Single Answer
The gonadotropin is a
A
Steroid hormone
B
Peptide hormone
C
Cholesterol rich hormone
D
Enzyme
Question 89Single Answer
Biodiversity is a measure of the
A
Variety of non living things within an ecosystem
B
Amount of resources shared by the human population
C
Variety of species within an ecosystem
D
Amount of renewable sources within an ecosystem
Question 90Single Answer
What are monosaccharide components of the milk disaccharide Lactose?
A
Glucose and galactose
B
Fructose and glucose
C
Glucose and manose
D
Glucose and glucose
Question 91Single Answer
What is the biosynthetic precursor of ketone bodies?
A
Acetyl COA
B
Succinyl COA
C
Adenyl COA
D
None of the above
Question 92Single Answer
Black colour of pond mud is due to the presence of
A
Ammonia
B
High organic load
C
High pH
D
High level of H2S
Question 93Single Answer
Who first determined the primary structure of insulin?
A
Edman
B
Flipper
C
Sanger
D
George
Question 94Single Answer
Vitamin B2, is also known as
A
Riboflavin
B
Thiamin
C
Pyridoxine
D
Panthothenic acid
Question 95Single Answer
Optimum dissolved oxygen for fish culture is
A
Below 4 ppm
B
Between 5-6 ppm
C
Above 9 ppm
D
None of the above
Question 96Single Answer
Crystal violet is used as
A
Positive stain
B
Negative stain
C
Fixative
D
None of the above
Question 97Single Answer
Natural anti-oxidant is
A
a-tocopherol
B
BHA
C
Ethoxynin
D
BHT
Question 98Single Answer
Optimum pH range for carp culture is
A
6.5 to 7.0
B
7.0 to 7.5
C
8.5 to 9.5
D
7.5 to 9.5
Question 99Single Answer
Pigment found in aquatic animal
A
Chlorophyll
B
Haemoglobin
C
Astaxanthine
D
None of the above
Question 100Single Answer
Which of the following is known as energy currency of cell?
A
DNA
B
ATP
C
RNA
D
Vitamins
Question 101Single Answer
Vegetation of saline waters is
A
Makhana
B
Lotus
C
Water hyacinth
D
Mangroves
Question 102Single Answer
Functional protein is
A
Collagen
B
Vitamin
C
Enzyme
D
Assein
Question 103Single Answer
Hormone is produced by
A
All steroid
B
All protein
C
Some steroids and some protein
D
None of the above
Question 104Single Answer
Oxbow lake is formed by
A
Pond activity
B
Ocean activity
C
River activity
D
All of the above
Question 105Single Answer
The omega-3 fatty acid is
A
Palmitic acid
B
Stearic acid
C
Linolenic acid
D
Oleic acid
Question 106Single Answer
Thermocline or Metalimnion refers to
A
Middle layer of water
B
Upper layer of water
C
Bottom layer of water
D
None of the above
Question 107Single Answer
PUFA which reduce cholesterol and coronary disease
A
Docasapentaenoic acid
B
Eicospentanoic acid
C
Glycerol
D
None of the above
Question 108Single Answer
Aquarium fish may excrete ammonia in the range of
A
0.3-4.0 g/kg fish/day
B
0.2-4.0g/kg fish/day
C
1.0-5.0g/kg fish/day
D
None of the above
Question 109Single Answer
Lentic habitat denotes
A
Stagnant water
B
Standing water
C
Running water
D
Both (a) and (b)
Question 110Single Answer
Which of the following fish can produce electric current?
A
Malapterus
B
Narsine
C
Torpedo
D
All of the above
Question 111Single Answer
Which of the following is a nest building fish?
A
Protopterus
B
Notopterus
C
Pangasius
D
Barilius
Question 112Single Answer
Which of the following is not an air breathing organ?
A
Skin
B
Buccopharynx
C
Gill
D
None of the above
Question 113Single Answer
During maturation in ovary, the oocytes are ready for spawning at stage no.
A
VII
B
VI
C
V
D
IV
Question 114Single Answer
Which of the following function is performed by a gas or swim bladder?
A
Auditory
B
Respiratory
C
Hydrostatic
D
All of the above
Question 115Single Answer
Labeo bata is a
A
Surface feeder
B
Column Feeder
C
Bottom feeder
D
None of the above
Question 116Single Answer
Example of Lentic habitat
A
Ponds
B
Lakes
C
Swamps
D
All of the above
Question 117Single Answer
Feeding habit of Heteropneustes is
A
Herbivorous
B
Carnivorous
C
Omnivorous
D
Planktivorous
Question 118Single Answer
The type of food ingested at the time of scarcity is known as
A
Occassional food
B
Incidental food
C
Obligatory food
D
Basic food
Question 119Single Answer
Liming of the pond is done to
A
To increase oxygenation
B
To increase the productivity
C
To kill the parasites and raise pH
D
All of the above
Question 120Single Answer
"Pheromones" are secreted by
A
Club cells
B
Chloride cells
C
Mucous cells
D
Epithelial cells.
Question 121Single Answer
The scales present on the body of catfishes are of the type
A
Cosmoid
B
Ganoid
C
Placoid
D
None of the above
Question 122Single Answer
Deepest lake in the world is
A
Baikal lake
B
Superior lake
C
Chilka lake
D
Pulicat lake
Question 123Single Answer
Anaerobic respiration involves
A
Glycolysis
B
TCA cycle
C
Electron transport
D
None of the above
Question 124Single Answer
The function of lateral line is related to
A
Water depth
B
Balancing
C
Both of the above
D
None of the above
Question 125Single Answer
The science dealing with the various systems of inland waters, usually
freshwater is called
A
Limnology
B
Oceanography
C
Hydrology
D
None of the above
Question 126Single Answer
The fine texture of fish muscle is due to presence of
A
Collagen
B
PUFA
C
Glucose
D
Moisture
Question 127Single Answer
Which of the following is not an enzyme?
A
Hexokinase
B
Chymotrypsin
C
Pepsin
D
Insulin
Question 128Single Answer
Phytoplankton contain C:N:P in the ratio of
A
100:17:2.4
B
100:16:2.4
C
75:16:2.4
D
75:17:2.4
Question 129Single Answer
The shape of lens found in fishes is
A
Flat
B
Oval
C
Spherical
D
None of the above
Question 130Single Answer
The cells present in pituitary gland are
A
Prolactin
B
Gonadotrops
C
Both of the above
D
None of the above
Question 131Single Answer
Abundant blooms of Fragillaria oceanica indicates presence of a particular fish
A
Sardine
B
Mackeral
C
Bombay duck
D
Tuna
Question 132Single Answer
The number of ova laid by fish in a spawning season is called
A
Maturity
B
Gonadosomatic index
C
Fecundity
D
Reproductive capacity
Question 133Single Answer
Fully mature stage of ovum is
A
IV
B
V
C
VI
D
VII
Question 134Single Answer
The milk produced by viviparous fish is known as?
A
Milt
B
Milky fluid
C
Uterine milk
D
Ooplasm
Question 135Single Answer
The fish famous for parental care is
A
Hippocampus
B
Scoliodon
C
Gambusia
D
Labeo
Question 136Single Answer
Which of the following is not found in fishes?
A
Membranous labyrinth
B
Gill lamellae
C
Alveoli
D
None of the above
Question 137Single Answer
Which of the following is not a sensory organ?
A
Lateral line
B
Ampulae of Lorenzini
C
Olfactory rossette
D
None of the above
Question 138Single Answer
Consider the statements
I. Ocean water occupy 7/10 of earth's surface
II. Inland waters are less than 1/50 of earth's surface
III. Ocean waters have restricted fauna
IV. Inland waters have prolific fauna
Of the statements
A
I and II are correct
B
I, II and III are correct
C
I and II are correct
D
All are correct
Question 139Single Answer
The cells responsible for coloration in fishes are called
A
Erythrophores
B
Melonophores
C
Xanthophores
D
All of the above
Question 140Single Answer
The hormones secreted by pituitary gland are
A
STH
B
GTH
C
Oxytocin
D
All of the above
Question 141Single Answer
The example of oviparous fishes are
A
Carps
B
Gold fish
C
Both of the above
D
None of the above
Question 142Single Answer
Identify the correct order in which the lentic series evolved
A
Pond, Bogs, Swamps, Lakes
B
Lakes, Ponds, Bogs, Swamps
C
Swamps, Lakes, Pond, Bogs
D
Lakes, Swamps, Ponds, Bogs
Question 143Single Answer
Parental care is shown by
A
Fighting fish
B
Amia
C
Protopterus
D
All of the above
Question 144Single Answer
Which one of the following comes under lentic series?
A
Creeks
B
River
C
Lake
D
Streams
Question 145Single Answer
Indicator species of oceanic water
A
Dinoflagellates
B
Diatoms
C
Sagitta acerosa
D
None of the above
Question 146Single Answer
Red tide is caused by
A
Bacteria
B
Fungi
C
Dinoflagellates
D
Diatoms
Question 147Single Answer
Functions of pineal gland include
A
Photoreception
B
Gonadotropin secretion
C
Melatonin secretion
D
All of the above
Question 148Single Answer
Which of the following is not an endocrine gland?
A
Urophysis
B
Pancreas
C
Islets of langerhans
D
Liver
Question 149Single Answer
Embryonic developmental stage of fish is
A
Cleavage
B
Blastula
C
Gastrula
D
All of the above
Question 150Single Answer
Eutrophication is a phenomenon, where there is
A
Excessive feeding by available fauna
B
Diversity of species high
C
Over abundance of nutrients
D
High sunlight penetration
Question 151Single Answer
Follicular atresia means
A
Degenerating ovum
B
Vitellogenic follicles
C
Developed oocyte
D
None of the above
Question 152Single Answer
The type of food ingested most willingly by the fish is known as
A
Occasional food
B
Incidental food
C
Obligatory food
D
Basic food
Question 153Single Answer
Beels/oxboo lakes are mostly distributed in
A
Tamil Nadu
B
Gujarat
C
Himachal Pradesh
D
Assam
Question 154Single Answer
The time taken after fertilization up to hatching is known as the period of
A
Fertilization
B
Gastrulation
C
Incubation
D
Yolk absorption
Question 155Single Answer
Young one of a fish is called
A
Spawn
B
Fingerling
C
None of the above
D
All of the above
Question 156Single Answer
Itai-Itai disease is due to consumption of fish contaminated with
A
Cadmium
B
Zinc
C
Mercury
D
Lead
Question 157Single Answer
Which type of fishes consist long and coiled intestine?
A
Omnivorous
B
Carnivorous
C
Herbivorous
D
None of the above
Question 158Single Answer
Which of the following increases with the maturation of fish?
A
Body length
B
Gastrosomatic index
C
Gonadosomatic Index
D
None of the above
Question 159Single Answer
Salt content of the sea water
A
3 to 3.5 per cent
B
3 to 5 per cent
C
Less than 1 per cent
D
More than 10 per cent
Question 160Single Answer
Which of the following is not an accessory respiratory organ?
A
Fins
B
Skin
C
Pharyngeal diverticulum
D
None of the above
Question 161Single Answer
Which of the following scale is not found in fishes?
A
Cosmoid
B
Cycloid
C
Ctenoid
D
None of the above
Question 162Single Answer
Point at which respiration and photosynthesis is equal known as
A
Average depth
B
Mean depth
C
Compensation depth
D
None of the above
Question 163Single Answer
Global marine fish production is the highest in–
A
North America
B
Africa
C
Asia
D
Australia
Question 164Single Answer
Which is a paired fin?
A
Pelvic
B
Dorsal
C
Anal
D
Caudal
Question 165Single Answer
Which areas in the oceans are rich in fish population?
A
Upwelling area
B
Pelagic region
C
Benthic region
D
None of the above
Question 166Single Answer
Examples of extramural gland is
A
Pancreas
B
Liver
C
Both (a) and (b)
D
None of the above
Question 167Single Answer
Urine of a freshwater fish is
A
Isotonic
B
Hypertonic
C
Hypotonic
D
None of the above
Question 168Single Answer
Which is the largest river system in India?
A
Indus
B
Ganga
C
Brahmaputra
D
Mahanadi
Question 169Single Answer
Which of the following is secreted by pituitary gland?
A
Estrogen
B
Progesterone
C
Testosterone
D
Gonadotropin
Question 170Single Answer
Which is not an endocrine gland?
A
Thyroid
B
Ovary
C
Urophysis
D
Intestinal caeca
Question 171Single Answer
Which of the following is not a hormone?
A
Insulin
B
Trypsin
C
Glucagon
D
Prolactin
Question 172Single Answer
Which of the following is a bottom feeder?
A
Cyprinus
B
Clarias
C
Cirhhinus
D
All of the above
Question 173Single Answer
Vitamin K is useful in
A
Blood clotting
B
Antioxidant
C
Osmosis
D
All of the above
Question 174Single Answer
Which one is the essential fatty acid?
A
Palmatic acid
B
Oleic acid
C
Arachidonic acid
D
All of the above
Question 175Single Answer
Fishes are the richest source of
A
HUFA
B
n-6 PUFA
C
n-3 PUFA
D
n-9 PUFA
Question 176Single Answer
For trypsin and chymotrypsin, zymogens come from
A
The Pancreas
B
From food
C
From gut wall
D
None of the above
Question 177Single Answer
Riverine system is placed in
A
Open system
B
Closed system
C
Both open and closed system
D
None of above
Question 178Single Answer
Which vitamin participates in protein synthesis?
A
Vitamin B12
B
Vitamin A
C
Vitamin C
D
Vitamin D
Question 179Single Answer
Fish protein is a very rich source of which essential amino acid
A
Histidine
B
Lysine
C
Both (a) and (b)
D
None of the above
Question 180Single Answer
Fish liver oil is rich in
A
Vitamin A
B
Vitamin D
C
Both (a) and (b)
D
None of the above
Question 181Single Answer
Bile juices are secreted by
A
Mouth
B
Stomach
C
Liver
D
None of the above
Question 182Single Answer
Which of the following species hermaphrodite ?
A
O. mossambicus
B
Epinepltilus taurina
C
M. cephallus
D
Chamos chanos
Question 183Single Answer
The number of barbels in catfish family Tachysuridae are –
A
Two pairs
B
Three pairs
C
Four pairs
D
One pair
Question 184Single Answer
Which of the following is not an essential amino acid?
A
Arginine
B
Glycine
C
Leucine
D
Lysine
Question 185Single Answer
Chilka lake is a
A
Lagoon
B
Bhery
C
Backwater
D
Mangrove
Question 186Single Answer
Examples of digestive gland is
A
Pancreas
B
Liver
C
Both of the above
D
None of the above
Question 187Single Answer
The mud flat and saline swamps located in West Bengal are called
A
Bheries
B
Lagoon
C
Backwater
D
Embanked brackish water
Question 188Single Answer
In fish population studies indicates –
A
Survival rate
B
Mortality rate
C
Growth rate
D
Recruitment
Question 189Single Answer
Which is the sulphur containing amino acid?
A
Metheonine
B
Cysteine
C
Both (a) and (b)
D
None of the above
Question 190Single Answer
Cell wall is absent in
A
Plants
B
Animals
C
Mucor
D
Mango
Question 191Single Answer
Role of vitamin E is
A
Blood clotting
B
Antioxidant
C
Osmosis
D
All of the above
Question 192Single Answer
Shrimp production j ha is maximum in which state–
A
Andhra Pradesh
B
Tamil Nadu
C
West Bengal
D
Goa
Question 193Single Answer
Which of the following is not found in fishes?
A
Membranous labyrinth
B
Gill lamellae
C
Alveoli
D
None of the above
Question 194Single Answer
Which of the following is not a sensory organ?
A
Lateral line
B
Ampulae of Lorenzini
C
Olfactory rosette
D
None of the above
Question 195Single Answer
The brackish water which act as buffer zone between sea and land is called
A
Lagoon
B
Mangrove
C
Backwater
D
Embanked brackish water
Question 196Single Answer
The cells responsible for pigmentation in animals are called
A
Erythrophores
B
Melonophores
C
Xanthophores
D
All of the above
Question 197Single Answer
Instantaneous source of energy is
A
Glucose
B
Fats
C
Proteins
D
Amino acids
Question 198Single Answer
The largest estuarine ecosystem of India is
A
Hooghly Matlah estuary
B
Mahanadi system
C
Godavari system
D
Narmada system
Question 199Single Answer
The connecting link among glycolysis, Kreb's cycle and beta-oxidation of fatty acid is
