FISHERIES SCIENCE AQUACULTURE- PAGE 2
FISHERIES SCIENCE- AQUACULTURE- MCQs
1. The fish considered to be most suitable donor of pituitary gland for fish breeding purpose is
(A) Rohu
(B) Catla
(C) Grass carp
(D) Common carp
Ans: D
2. Ideal slope of pond made by clayey soil is
(A) 2: 1
(B) 1 :2
(C ) 1 : 1
(D) 1: 3
Ans: C
3. Transparency in ponds is measured by
(A) pH meter
(B) Colorimeter
(C) Spectrophotometer
(D) Sechhi Disk
Ans: D
4. Secondary sexual characters are prominent in carps during
(A) Rainy season
(B) Winter season
(C) Summer season
(D) Throughout the year
Ans: A
5. _____ concentration of ammonia is toxic to fish.
(A) 5 ppm
(B) 1 ppm
(C) 0.1ppm
(D) 0.01 ppm
Ans: C
6. Which type of soil is suitable for fish culture ponds?
(A) Sandy (B) Loamy
(C) Clayey loam (D) Alluvial
Ans: C
7. Which fish can survive in muddy puddles?
(A) Mrigal
(C) Rohu
(B) Catla
(D) Magur
Ans: D
8. In a productive soil, what should be the level of phosphorus?
(A) 6 -12 mg/g
(B) 3—6 mg/g
(C) 0 - 2 mg/g
(D) 12 — 15 mg/g
Ans: A
9. Leaves and twigs falling on the pond surface contribute as ________in due course of time.
(A) Phytoplankton
(B) Periphyton
(C) Zooplankton
(D) Detritus
Ans: D
10. Organisms of same species in a particular locality constitute
(A) Community (B) Population
(C) Flora (D) Fauna
Ans: B
11. Liming efficiency is highest in
(A) Quicklime
(B) Limestone
(C) Dolomite
(D) Hydrated lime
Ans: A
12. The percentage of water in sewage is
(A) 99 %
(B) 85 - 90%
(C) 50—60%
(D) 40%
Ans: A
13. Which is not a predatory fish among the following ?
(A) Clarias (B) Wallago
(C) Mystus (D) Puntius
Ans: D
14. In sewage treatment plant, use of duckweeds to absorb excessive nutrients, exhibits the phenomenon of
(A) Bio-remediation
(B) Phyto-remediation
(C) Eutrophication
(D) Oxidation
Ans: B
15. Greater productivity can be achieved in
(A) Long food chain
(B) Short food chain
(C) Detritus food chain
(D) Benthos food chain
Ans: B
16. At which time dissolved oxygen level in ponds is maximum?
(A) 4.00 AM (B) 12.00 AM
(C) 4.00 PM (D) 12.00 PM
Ans: C
17. Dark black coloration of pond bottom mud, shows the presence of
(A) High organic load
(B) High hydrogen sulphide
(C) High pH
(D) Ammonia
Ans: A
18. Which is the largest river of India ?
(A) Mahanadi
(B) Brahmaputra
(C) Ganga
(D) Sindhu
Ans: C
19. Inland fisheries includes
(A) Fishes only from fresh water
(B) Fishes both from brackish water and fresh water
(C ) Fishes only from sea water
(D) Fishes only from brackish water
Ans: B
20. Most important factor in aquarium fish culture is constant supply of
(A) High temperature
(B) Live food organisms
(C) Presence of aquatic weeds
(D) Pelleted food
Ans: B
21. Itai ltai disease may be caused due to intake of fish contaminated with
(A) Cadmium (B) Zinc
(C) Mercury (D) Lead
Ans: A
22. Optimum pH range for carp fish culture is
(A) 6.5 —7.0 (B) 7.0—7.5
(C) 7.5 - 8.5 (D) 8.5 — 9.5
Ans: C
23. Pituitary gland in fishes is situated in a cup like structure in the cranium, which is known as
(A) Sella turcica
(B) Scylla serrata
(C) Temporal fossae
(D) Acetabulum
Ans: A
24. The inducing agents with salmon gonadotrophin and domperidone is
(A) Ovatide
(B) Ovaprim
(C) Ovapel
(D) Ovapil
Ans: B
25. The optimal level of dissolved oxygen in fish ponds is
(A) 1 -3 ppm
(B) 5 - 12 ppm
(C) 9 - 10 ppm
(D) 12- 15 ppm
Ans: B
26. The submerged aquatic weed is
(A) Pistia
(B) Marsilia
(C) Typha
(D) Vallisneria
Ans: D
27. In the pond construction, the gley technique is used for
(A) construction of dyke
(B) arrangement of outlet
(C) sealing of pond bottom
(D) arrangement of filters
Ans: C
28. The scientific name of brine shrimp is
(A) Acetus
(B) Artemia
(C) Parapenaeus
(D) Penaeus
Ans: B
29. The larval stage of Scylla serrata is
(A) Mysis
(B) Megalopa
(C) Zoea
(D) Kentrogen
Ans: B
30. Name the fish which is cultured widely in cold environment like Jammu and Kashmir
(A) Trouts
(B) Major carps
(C) Minor carps
(D) Murrels
Ans: A
31. Torsion is found in
(A) Lamelli branchiata
(B) Polyplacophora
(C) Cephalopoda
(D) Gastropoda
Ans: D
(A) Rohu
(B) Catla
(C) Grass carp
(D) Common carp
Ans: D
2. Ideal slope of pond made by clayey soil is
(A) 2: 1
(B) 1 :2
(C ) 1 : 1
(D) 1: 3
Ans: C
3. Transparency in ponds is measured by
(A) pH meter
(B) Colorimeter
(C) Spectrophotometer
(D) Sechhi Disk
Ans: D
4. Secondary sexual characters are prominent in carps during
(A) Rainy season
(B) Winter season
(C) Summer season
(D) Throughout the year
Ans: A
5. _____ concentration of ammonia is toxic to fish.
(A) 5 ppm
(B) 1 ppm
(C) 0.1ppm
(D) 0.01 ppm
Ans: C
6. Which type of soil is suitable for fish culture ponds?
(A) Sandy (B) Loamy
(C) Clayey loam (D) Alluvial
Ans: C
7. Which fish can survive in muddy puddles?
(A) Mrigal
(C) Rohu
(B) Catla
(D) Magur
Ans: D
8. In a productive soil, what should be the level of phosphorus?
(A) 6 -12 mg/g
(B) 3—6 mg/g
(C) 0 - 2 mg/g
(D) 12 — 15 mg/g
Ans: A
9. Leaves and twigs falling on the pond surface contribute as ________in due course of time.
(A) Phytoplankton
(B) Periphyton
(C) Zooplankton
(D) Detritus
Ans: D
10. Organisms of same species in a particular locality constitute
(A) Community (B) Population
(C) Flora (D) Fauna
Ans: B
11. Liming efficiency is highest in
(A) Quicklime
(B) Limestone
(C) Dolomite
(D) Hydrated lime
Ans: A
12. The percentage of water in sewage is
(A) 99 %
(B) 85 - 90%
(C) 50—60%
(D) 40%
Ans: A
13. Which is not a predatory fish among the following ?
(A) Clarias (B) Wallago
(C) Mystus (D) Puntius
Ans: D
14. In sewage treatment plant, use of duckweeds to absorb excessive nutrients, exhibits the phenomenon of
(A) Bio-remediation
(B) Phyto-remediation
(C) Eutrophication
(D) Oxidation
Ans: B
15. Greater productivity can be achieved in
(A) Long food chain
(B) Short food chain
(C) Detritus food chain
(D) Benthos food chain
Ans: B
16. At which time dissolved oxygen level in ponds is maximum?
(A) 4.00 AM (B) 12.00 AM
(C) 4.00 PM (D) 12.00 PM
Ans: C
17. Dark black coloration of pond bottom mud, shows the presence of
(A) High organic load
(B) High hydrogen sulphide
(C) High pH
(D) Ammonia
Ans: A
18. Which is the largest river of India ?
(A) Mahanadi
(B) Brahmaputra
(C) Ganga
(D) Sindhu
Ans: C
19. Inland fisheries includes
(A) Fishes only from fresh water
(B) Fishes both from brackish water and fresh water
(C ) Fishes only from sea water
(D) Fishes only from brackish water
Ans: B
20. Most important factor in aquarium fish culture is constant supply of
(A) High temperature
(B) Live food organisms
(C) Presence of aquatic weeds
(D) Pelleted food
Ans: B
21. Itai ltai disease may be caused due to intake of fish contaminated with
(A) Cadmium (B) Zinc
(C) Mercury (D) Lead
Ans: A
22. Optimum pH range for carp fish culture is
(A) 6.5 —7.0 (B) 7.0—7.5
(C) 7.5 - 8.5 (D) 8.5 — 9.5
Ans: C
23. Pituitary gland in fishes is situated in a cup like structure in the cranium, which is known as
(A) Sella turcica
(B) Scylla serrata
(C) Temporal fossae
(D) Acetabulum
Ans: A
24. The inducing agents with salmon gonadotrophin and domperidone is
(A) Ovatide
(B) Ovaprim
(C) Ovapel
(D) Ovapil
Ans: B
25. The optimal level of dissolved oxygen in fish ponds is
(A) 1 -3 ppm
(B) 5 - 12 ppm
(C) 9 - 10 ppm
(D) 12- 15 ppm
Ans: B
26. The submerged aquatic weed is
(A) Pistia
(B) Marsilia
(C) Typha
(D) Vallisneria
Ans: D
27. In the pond construction, the gley technique is used for
(A) construction of dyke
(B) arrangement of outlet
(C) sealing of pond bottom
(D) arrangement of filters
Ans: C
28. The scientific name of brine shrimp is
(A) Acetus
(B) Artemia
(C) Parapenaeus
(D) Penaeus
Ans: B
29. The larval stage of Scylla serrata is
(A) Mysis
(B) Megalopa
(C) Zoea
(D) Kentrogen
Ans: B
30. Name the fish which is cultured widely in cold environment like Jammu and Kashmir
(A) Trouts
(B) Major carps
(C) Minor carps
(D) Murrels
Ans: A
31. Torsion is found in
(A) Lamelli branchiata
(B) Polyplacophora
(C) Cephalopoda
(D) Gastropoda
Ans: D
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