Fisheries • 2017 • Technical Paper-II
Functioning of brain, nerves, etc are maintained by :
A)
EPA
B)
Amino Acid
C)
DHA
D)
None of these
DHA (Omega-3) essential for brain, nerves, retina development and function.
Fisheries • 2017 • Technical Paper-II
The first staff reading in any set up of the instrument is called :
A)
Fore sight
B)
Intermediate sight
C)
Back sight
D)
All of these
In levelling, first reading after setup is backsight; last is foresight; others intermediate.
Fisheries • 2017 • Technical Paper-II
Percentage of protein content in fish :
A)
16 -22 %
B)
35-40%
C)
66-80 %
D)
30-35%
Fresh fish muscle contains 16-22% protein, 1-20% fat, ~80% moisture.
Fisheries • 2017 • Technical Paper-II
Hypocalcin is secreted by :
A)
Urohypophysis
B)
Pineal gland
C)
Adrenal gland
D)
Corpus of stannius
Corpuscles of Stannius secrete hypocalcin/stanniocalcin regulating calcium.
Fisheries • 2017 • Technical Paper-II
The important raw material source in fish feed is:
A)
Leaf meal
B)
Legume meal
C)
Fish meal
D)
Oil cake
Fish meal is the primary high-protein animal source in fish feeds.
Fisheries • 2017 • Technical Paper-II
Fish meal is mainly used as a feed ingredient in:
A)
Baby feed
B)
Both (a) and (b)
C)
Live-stock feed
D)
None of these
Fish meal is protein-rich ingredient used both in larval/baby fish feeds and livestock/poultry feeds; MCQ typo for Both (a) and (c), marked as Both.
Fisheries • 2017 • Technical Paper-II
Feed Conversion ratio of Fish meal:
A)
1.5- 3
B)
3.5-4
C)
2.5-4
D)
4.5-5
Fish meal highly digestible, low FCR 1.5-3 in carps/shrimps compared to plant byproducts.
Fisheries • 2017 • Technical Paper-II
Feed Conversion ratio of Rice bran:
A)
5.08
B)
8.08
C)
7.08
D)
10.08
Rice bran is low protein, high fiber feed with poor FCR around 5.08 in carps.
Fisheries • 2017 • Technical Paper-II
Fish is superior to cereals in regard to higher content of :
A)
Proline
B)
Lysine
C)
Glycine
D)
Histidine
Fish protein rich in lysine essential AA deficient in cereals.
Fisheries • 2017 • Technical Paper-II
Fish protein is rich and low in…… and …… Amino Acid respectively compared to cereal protein :
A)
Cysteine and arginine
B)
Phenylalanine and tyrosine
C)
Lysine and cysteine
D)
Lysine and tryptophan
Fish protein rich in lysine but relatively low in tryptophan compared to cereal/milk references; common exam phrase lysine and tryptophan.
Fisheries • 2017 • Technical Paper-II
Gill in fish mainly used for:
A)
Filtering of water
B)
Excretion
C)
Respiration
D)
Both (b) and (c)
Fish gills function in respiration and excretion of ammonia/ions and osmoregulation.
Fisheries • 2017 • Technical Paper-II
Fish species successfully bred first in India is:
A)
Puntius
B)
Cyprinus
C)
Esomus
D)
Zebra fish
Puntius sophore was among first Indian fishes bred successfully in captivity in 1937.
Fisheries • 2017 • Technical Paper-II
Hypophysis is related to :
A)
Pituitary gland
B)
Pineal gland
C)
Adrenal gland
D)
Corpus of stannius
Hypophysis = hypophysis cerebri = pituitary gland.
Fisheries • 2017 • Technical Paper-II
Generally raw sewage contains:
A)
99 %
B)
90 %
C)
99.9 %
D)
80 %
Raw sewage is ~99.9% water, 0.1% solids.
Fisheries • 2017 • Technical Paper-II
Health of heart and circulatory system are maintained by :
A)
EPA
B)
Amino Acid
C)
DHA
D)
None of these
EPA omega-3 from fish oil helps maintain heart/circulatory health (with DHA, but EPA primary for cardiovascular).
Fisheries • 2017 • Technical Paper-II
Relative neutralizing value is 100
A)
CaO
B)
CaCO3
C)
Ca(OH)2
D)
MgCO3
Calcium carbonate CaCO3 assigned RNV 100 as reference for liming materials.
Fisheries • 2017 • Technical Paper-II
In most fish, the chemical digestion begins in:
A)
Mouth
B)
Oesophagus
C)
Stomach
D)
Intestine
Fish have little/no salivary digestion; chemical digestion starts in stomach with acid/pepsin, then intestine.
Fisheries • 2017 • Technical Paper-II
Mycrocystis bloom in pond is controlled by:
A)
Gammexane
B)
Teepol
C)
Simazine
D)
BHC
Simazine @0.5-1 ppm controls Microcystis cyanobacterial blooms.
Fisheries • 2017 • Technical Paper-II
In prawns, eggs hatches into
A)
Protozoea
B)
Zoea
C)
Mysis
D)
Nauplius
Penaeid prawn eggs hatch into nauplius, then protozoea, mysis, post-larva.
Fisheries • 2017 • Technical Paper-II
Which one is a live bearer?
A)
Gold fish
B)
Guppy
C)
Tilapia
D)
Pabda fish
Guppy (Poecilia) is livebearer; goldfish, tilapia are egg layers.
Fisheries • 2017 • Technical Paper-II
Indian major carp eggs are:
A)
Pelagic and sticky
B)
Pelagic and non-sticky
C)
Demersal and sticky
D)
Demersal and non-sticky
Indian major carp eggs are pelagic, non-sticky, semi-buoyant, floating in water column.
Fisheries • 2017 • Technical Paper-II
The most common practice fish pond in Mizoram is:
A)
Watershed pond
B)
RAS pond
C)
Levee pond
D)
RAD pond
Mizoram is hilly; watershed/diversion ponds fed by runoff are most common practice.
Fisheries • 2017 • Technical Paper-II
Stocking density of brooder prawn:
A)
1-2/m2
B)
5-6/m2
C)
2-3/m2
D)
5-10/m2
Broodstock prawn stocked at low density 1-2/m2 to reduce stress and cannibalism.
Fisheries • 2017 • Technical Paper-II
Fish body or flesh is softer comparative to mammals’ because of:
A)
Less sarcoplasmic protein
B)
Low stroma protein
C)
High myofibrillar protein
D)
All of these
Fish muscle softer due to very low collagen (stroma protein) and segmented myotomes with myosepta, not high sarcoplasmic.
Fisheries • 2017 • Technical Paper-II
DNA and RNA are differ in:
A)
Sugar only
B)
Sugar and pyrimidines
C)
Sugar and purine
D)
Sugar and phosphate
DNA has deoxyribose and thymine, RNA has ribose and uracil; purines and phosphate same.
