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1.

1. Fish are aquatic animals that are characteristic of being:

a)

(A) Poikilothermic vertebrate

b)

(B) Heterothermic vertebrate

c)

(C) Homeothermic vertebrate

d)

(D) A&B

2.

2. Fish are aquatic vertebrate animals characterized by the presence of:

a)

(A) Fins

b)

(B) Gills

c)

(C) Scales

d)

(D) A, B&C

3.

3. Jawless fishes known as:

a)

(A) Cyclostomata

b)

(B) Cephalaspidomorphi

c)

(C) Agnatha

d)

(D) A, B&C

4.

4. Jawless fishes may be:

a)

(A) Freshwater species as lampreys

b)

(C) Anadromous species

c)

(C) Marine species as hagfishes

d)

(D) all answers are correct

5.

5. Jawed fishes known as:

a)

(A) Chondrichthyes

b)

(B) Osteichthyes

c)

(C) Gnathostomata

d)

(D) all answers are correct

6.

6. cartilaginous fish include:

a)

(A) Shark

b)

(B) Rays

c)

(C) Skates

d)

(D) A, B&C

7.

7. Bony fish include:

a)

(A) Sarcopterygii

b)

(B) Crossopterygii

c)

(C) Actinopterygii

d)

(D) all answers are correct

8.

8. Ray-finned fish include:

a)

(A) Chondrostei

b)

(B) Holostei

c)

(C) Teleostei

d)

(D) all answers are correct

9.

9. There is a gill cover “Operculum” on each side of the head in which of the following fish:

a)

(A) Chondrichthyes

b)

(B) Teleosts

c)

(C) Jawless fishes

d)

(D) Cyclostomes

10.

10. Rayfins are fish that belong to:

a)

(A) Sarcopterygii

b)

(B) Agnatha

c)

(C) Actinopterygii

d)

(D) Elasmobranchii

11.

11. Fertilization is carried out internally in which of the following fish:

a)

(A) Viviparous fish

b)

(B) Oviparous fish

c)

(C) Ovoviviparous fish

d)

(D) both A & C

12.

12. In any of the following fish, the sperm stimulates the egg to divide without sharing its genetic material and the resulting offspring is all female:

a)

(A) Grouper

b)

(B) Sea bass

c)

(C) Wrasse

d)

(D) Amazon Molly

13.

13. In any of the following fish, fertilization is external:

a)

(A) Oviparous fish

b)

(B) Viviparous fish

c)

(C) Ovoviviparous fish

d)

(D) both B & C

14.

14. In which fish do the fetus depend on yolk as the only food source:

a)

(A) Oviparous fish

b)

(B) Ovoviviparous fish

c)

(C) Viviparous fish

d)

(D) both A& B

15.

15. Which of the following patterns is the predominant reproductive pattern in fish:

a)

(A) Oviparous

b)

(B) Omnivorous

c)

(C) Ovoviviparous

d)

(B) Viviparous

16.

16. In which of the following reproductive patterns does the female lay unfertilized eggs, then the male fertilizes it in water:

a)

(A) Carnivorous

b)

(B) Omnivorous

c)

(C) Oviparous

d)

(D) Herbivorous

17.

17. In which fish does a female is a mouthbrooder:

a)

(A) Nile tilapia

b)

(B) Common carp

c)

(C) African catfish

d)

(D) Silver carp

18.

18. Which of the following fish are spawned once in their life and then die:

a)

(A) Anguilled eels

b)

(B) Rainbow trout

c)

(C) Common carp

d)

(D) Gray mullet

19.

19. Which of the following fish lay eggs several times in their lives, but only once in one spawning season:

a)

(A) Nile tilapia

b)

(B) New Zealand snapper

c)

(C) Catfish

d)

(D) Pacific salmon

20.

20. Which of the following fish lay eggs successively in one reproductive season:

a)

(A) Nile tilapia

b)

(B) Carp

c)

(C) Catfish

d)

(D) Mullet

21.

21. 13- Which of the following female fish does not have an oviduct:

a)

(A) Sturgeon

b)

(B) Lamprey

c)

(C) Carp

d)

(D) Mullet

22.

22. The eggs pass from the ovary cavity to the body cavity and outward in any of the following fish:

a)

(A) Salmon

b)

(B) Trout

c)

(C) Sharks

d)

(D) Catfish

23.

23. Which of the following fish are spawned once in their life and then die:

a)

(A) Mullet

b)

(B) Trout

c)

(C) Pacific salmon

d)

(D) Carp

24.

24. Which of the following aquatic chordate represent almost 50 % of total living vertebrates:

a)

(A) Aquatic Reptiles

b)

(B) Aquatic mammals

c)

(C) Amphibia

d)

(D) Pisces

25.

25. The term Pisces means:

a)

(A) Fishes

b)

(B) Crustacean

c)

(C) Mollusks

d)

(D) Whales

26.

26. Any of the following fish has no economic value:

a)

(A) Lampreys

b)

(B) Hagfishes

c)

(C) Clams

d)

(D) A&B

27.

27. Which of the following fish is characterized by the absence of a gill cover:

a)

(A) Sharks

b)

(B) Skates

c)

(C) Rays

d)

(D) A, B&C

28.

28. Examples of freshwater fish:

a)

(A) Tilapia

b)

(B) Catfish

c)

(C) Carp

d)

(D) A, B&C

29.

29. Examples of marine fish:

a)

(A) Sea bream

b)

(B) Sea bass

c)

(C) Grouper

d)

(D) A, B&C

30.

30. Fish that live in fresh water and then migrate to salt water for the purpose of spawning are known as:

a)

(A) Catadromous fish

b)

(B) Endemic fish

c)

(C) Anadromous fish

d)

(D) Detritivorous fish

31.

31. Fish that live in sea water and then migrate to fresh water for the purpose of spawning are known as:

a)

(A) Endemic fish

b)

(B) Detritivorous fish

c)

(C) Anadromous fish

d)

(D) Catadromous fish

32.

32. Fish that live in fresh water and then migrate to salt water for the purpose of spawning, such as:

a)

(A) Atlantic salmon

b)

(B) Anguilled eel

c)

(C) Hagfishes

d)

(D) Catfish

33.

33. Fish that live in sea water and then migrate to freshwater for the purpose of spawning, such as:

a)

(A) Catfish

b)

(B) Hagfishes

c)

(C) Anguilled eel

d)

(D) Atlantic salmon

34.

34. Fish are divided according to their feeding habits into:

a)

(A) Herbivores

b)

(B) Carnivores

c)

(C) Omnivores

d)

(D) all answers are correct

35.

35. Herbivorous fish are characterized by:

a)

(A) Constitute about 26% of the total fish

b)

(B) Long gastrointestinal tract

c)

(C) Extensively convoluted intestine

d)

(D) All answers are correct

36.

36. Carnivorous fish are characterized by:

a)

(A) Constitute about 12.5% of the total fish

b)

(B) Short gastrointestinal tract

c)

(C) Clear and defined stomach

d)

(D) All answers are correct

37.

37. Omnivorous fish are characterized by:

a)

(A) Constitute about 61.5% of the total fish

b)

(B) Feed on both animal and plant material

c)

(C) Clear and defined stomach

d)

(D) A & B

38.

38. Fish can also be classified according to their feeding habit into:

a)

(A) Euryphagous

b)

(B) Stenophagous

c)

(C) Monophagous

d)

(D) all answers are correct

39.

39. Fish feeding behavior Includes:

a)

(A) Predators

b)

(B) Grazers

c)

(C) Strainers

d)

(D) all answers are correct

40.

40. Fish can be divided according to the types of reproduction into:

a)

(A) Gonochoristic fish

b)

(B) Hermaphroditic fish

c)

(C) Parthenogenetic fish

d)

(D) all answers are correct

41.

42. The predominant type of reproduction is:

a)

(A) Gonochorism

b)

(B) Hermaphroditism

c)

(C) Parthenogenesis

d)

(D) all answers are correct

42.

43. Fish that start their lives as males and after one or more breeding seasons turn into females are known as:

a)

(A) Protogynous hermaphrodites

b)

(B) True hermaphrodite

c)

(C) Protandrous hermaphrodite

d)

(D) all answers are correct

43.

44. Fish that start their lives as females and after one or more breeding seasons turn into males are known as:

a)

(A) Protogynous hermaphrodites

b)

(B) True hermaphrodites

c)

(C) Protandrous hermaphrodites

d)

(D) all answers are correct

44.

45. Fish that start their life as females and before reproductive maturity become males known as:

a)

(A) Protogynous hermaphrodites

b)

(B) Juvenile hermaphrodites

c)

(C) Protandrous hermaphrodites

d)

(D) A & B

45.

46. Fish that start their life as males and before reproductive maturity become females known as:

a)

(A) Protogynous hermaphrodites

b)

(B) Protandrous hermaphrodites

c)

(C) Gonochoristic fish

d)

(D) B & C

46.

47. During the development of the indifferent gonad into an ovary or testis, which of the following differentiation takes place:

a)

(A) Anatomical differentiation

b)

(B) Cytological differentiation

c)

(C) Germ-Somatic cell development

d)

(D) all answers are correct

47.

48. Fish can be divided according to the patterns of reproduction into:

a)

(A) Viviparous fish

b)

(B) Ovoviviparous fish

c)

(C) Oviparous fish

d)

(D) all answers are correct

48.

49. The prevailing reproductive pattern in fish is:

a)

(A) Viviparous fish

b)

(B) Ovoviviparous fish

c)

(C) Oviparous fish

d)

(D) Omnivorous fish

49.

50. The group of fish that reproduce once in a lifetime is known as:

a)

(A) Semelparous

b)

(B) Synchrony

c)

(C) Iteroparous

d)

(D) A & B

50.

51. The group of fish that spawn more than once in their life but only once per season is known as:

a)

(A) Semelparous

b)

(B) Group Synchrony

c)

(C) Iteroparous

d)

(D) B & C

51.

52. The group of fish that spawn consecutive times per season is known as:

a)

(A) Asynchrony

b)

(B) Multiple group synchrony

c)

(C) Metachrone

d)

(D) all answers are correct

52.

53. The embryo depends on egg yolk as a source of food in which of the following reproductive pattern:

a)

(A) Oviparous fish

b)

(B) Ovoviviparous fish

c)

(C) Viviparous fish

d)

(D) A & B

53.

54. The embryo depends on maternal nutrients as a source of food in which of the following reproductive pattern:

a)

(A) Oviparous fish

b)

(B) Ovoviviparous fish

c)

(C) Viviparous fish

d)

(D) A & B

54.

55. If the oviduct does not merge with the ovarian capsule, it is known as:

a)

(A) Gymnoarian Condition

b)

(B) Cystoarian condition

c)

(C) Shell gland

d)

(D) A & B

55.

56. In the case of the merging of the oviduct with the capsule of the ovary, it is known as:

a)

(A) Gymnoarian Condition

b)

(B) Cystoarian condition

c)

(C) Shell gland

d)

(D) A & B

56.

57. Pregnancy in viviparous and ovoviviparous bony fish “teleost” may be either:

a)

(A) Follicular gestation

b)

(B) Intra-ovarian gestation

c)

(C) Intra-uterine gestation

d)

(D) all answers are correct

57.

58. Vitellogenic oocyte is surrounded by two basic layers of cells, namely:

a)

(A) Outer theca cell layer

b)

(B) Inner granulosa cell layer

c)

(C) Acellular zona radiata layer

d)

(D) A & B

58.

59. The egg membrane (Chorion) consists of several layer arranged from inside to outside as follows:

a)

(A) Zona radiata layer, Granulosa cell layer & Theca cell layer

b)

(B) Theca cell layer, Granulosa cell layer & Zona radiata layer

c)

(C) Granulosa cell layer, Theca cell layer & Zona radiata layer

d)

(D) Granulosa cell layer, Zona radiata layer & Theca cell layer

59.

60. Oocyte development in female fish undergo several phases include:

a)

(A) Primary growth phase (pre-vitellogenesis)

b)

(B) Secondary growth phase (vitellogenesis)

c)

(C) Maturational phase

d)

(D) all answers are correct

60.

61. Oocyte maturational phase is characterized by:

a)

(A) Germinal vesicle migration to the animal pole (GVM)

b)

(B) Massive coalescence of yolk granules

c)

(C) Germinal vesicle break down (GVBD)

d)

(D) all answers are correct

61.

62. Oocyte growth and maturation is controlled by:

a)

(A) Follicle-stimulating hormone (FSH)

b)

(B) Luteinizing hormone (LH)

c)

(C) Maturation-inducing hormone (MIH)

d)

(D) all answers are correct

62.

63. Synthesis of vitellogenin in fish liver is controlled by:

a)

(A) 17β-estradiol (E2)

b)

(B) Follicle-stimulating hormone (FSH)

c)

(C) Luteinizing hormone (LH)

d)

(D) A & B

63.

64. Environmental factors that play an important role in motivating female fish to enter the reproductive process include:

a)

(A) Water temperature

b)

(B) Photoperiod

c)

(C) Water column

d)

(D) all answers are correct

64.

65. The interstitial compartment of teleost testis is composed of:

a)

(A) Steroid-producing Leydig cells

b)

(B) Supportive Sertoli cells

c)

(C) Peritubular myoid cells.

d)

(D) all answers are correct

65.

65. The germinative compartment of teleost testis holds:

a)

(A) Germinal epithelium

b)

(B) Germ cells

c)

(C) Spermatocytes

d)

(D) all answers are correct

66.

66. Testicular tubular type in teleost is characterized by:

a)

(A) Restricted testis type

b)

(B) Spermatogonia are confined to the anterior end of the tubule

c)

(C) Absence of testicular lumen

d)

(D) all answers are correct

67.

67. Testicular germ cells that undergo mitosis division are: (A) Spermatogoni

a)

(A) Spermatogonia

b)

(B) Spermatocytes

c)

(C) Spermatids

d)

(D) A & B

68.

68. Testicular germ cells that undergo meiosis division are:

a)

(A) Spermatogonia

b)

(B) Primary Spermatocytes

c)

(C) Secondary Spermatocytes

d)

(D) B & C

69.

69. Testicular germ cells that undergo metamorphosis are:

a)

(A) Spermatogonia

b)

(B) Spermatids

c)

(C) Spermatocytes

d)

(D) B & C

70.

70. Testicular germ cells that undergo spermiogenesis are:

a)

(A) Spermatogonia

b)

(B) Spermatids

c)

(C) Spermatocytes

d)

(D) B & C

71.

71. Spermiogenesis is the process by which germ cells transformed into:

a)

(A) Diploid spermatocytes

b)

(B) Haploid spermatids

c)

(C) Haploid spermatocytes

d)

(D) Spermatozoa

72.

72. Stem cells self-renewal depends on:

a)

(A) 17β-estradiol (E2)

b)

(B) 11 Keto-testosterone

c)

(C) 17α, 20β-progesterone

d)

(D) all answers are correct

73.

73. During mitotic divisions of spermatogonia within each spermatogenetic cyst, the resulting daughter cells are:

a)

(A) Interconnected via cytoplasmic bridge

b)

(B) Form a clone of spermatogonia

c)

(C) Form cluster of spermatogonia in the same stage of development

d)

(D) all answers are correct

74.

74. The tubular type of testis is existed in:

a)

(A) Atlantic salmon

b)

(B) Killifish

c)

(C) Grouper

d)

(D) Sea bass

75.

75. The lobular type of testis is existed in:

a)

(A) Tilapia

b)

(B) Sea bream

c)

(C) Killifish

d)

(D) A & B

76.

76. The process of spermatogenesis can be divided into the following phases:

a)

(A) Mitotic proliferation & differentiation of spermatogonia

b)

(B) Meiotic division of spermatocytes to produce spermatids

c)

(C) Spermiogenesis (transformation of spermatids into spermatozoa)

d)

(D) all answers are correct

77.

77. The process of spermatogenesis is hormonally controlled by:

a)

(A) 11-ketotestosterone

b)

(B) 17β-estradiol

c)

(C) 17α, 20β-dihydroxypregn-4-en-3-one

d)

(D) all answers are correct

78.

78. Which of the following somatic cells produce hormones that regulate spermatogenesis in fish :

a)

(A) Myoid cells

b)

(B) Leydig cells

c)

(C) Sertoli cells

d)

(D) B & C

79.

79. Which of the following pituitary hormones stimulate Sertoli cells and Leydig cells in the fish testis to build sex steroid hormones:

a)

(A) FSH

b)

(B) LH

c)

(C) GnRH

d)

(D) A & B

80.

80. External environmental factors stimulate the brain to send signals to hypothalamus or secretion of:

a)

(A) GnRH

b)

(B) LH

c)

(C) FSH

d)

(D) B & C

81.

81. Of the benefits of artificial induce spawning in fish:

a)

(A) Obtaining live gametes outside the natural spawning season

b)

(B) Synchronize groups to spawn at specific times

c)

(C) Eliminating the excess death of gametes before ovulation

d)

(D) All answers are correct

82.

82. Some fish species of high economic value cannot spontaneously reproduce under captivity due to:

a)

(A) Cultivation of these species far from their natural environment

b)

(B) The absence of the pre-ovulatory surge of LH

c)

(C) General stress of Cultivation under captivity

d)

(D) All answers are correct

83.

83. An economical method of spawning is to place the broodstock in the right environment at the right time, such as in :

a)

(A) Tilapia

b)

(B) Common carp

c)

(C) Silver carp

d)

(D) A & B

84.

84. Tilapia fish can be divided into:

a)

(A) Substrate brooder

b)

(B) Maternal mouth brooder

c)

(C) Bi-parental mouth brooder

d)

(D) All answers are correct

85.

85. The most economic tilapia species for aquaculture are:

a)

(A) Nile tilapia

b)

(B) Tilapia aurea

c)

(C) Tilapia zilli

d)

(D) A & B

86.

86. Natural spawning is the method used for reproducing Nile tilapia due to:

a)

(A) Its lower fecundity

b)

(B) Easy to spawn in captivity

c)

(C) Difficult to spawn in captivity

d)

(D) A & B

87.

87. Which of the following ponds are suitable for spawning of Nile tilapia:

a)

(A) Earthen ponds

b)

(B) Concrete ponds

c)

(C) Fiberglass ponds

d)

(D) All answers are correct

88.

88. The optimal sex ratio for reproducing Nile tilapia is:

a)

(A) 3:1 male to female

b)

(B) 1:3 male to female

c)

(C) 1:3 female to male

d)

(D) B & C

89.

89. The incubation period of eggs and fry in the mouth of female tilapia can be reduced for the following purpose:

a)

(A) Returning the mother to spawn again within 10 days

b)

(B) Returning the mother to spawn again within 20-21 days

c)

(C) Returning the mother to spawn again within 21-28 days

d)

(D) All answers are false

90.

90. Fish farmers prefer the culture of mono-sex (all male) tilapia in order to:

a)

(A) Prevent the continuous reproduction

b)

(B) Avoid overcrowding in fish ponds

c)

(C) Take advantage of the higher growth rate of males

d)

(D) All answers are correct

91.

91. Breeding of tilapia as mixed sex (males and females) results in:

a)

(A) Small harvest weigh

b)

(B) Mixed sizes at harvest

c)

(C) Uniform size at harvest

d)

(D) A & B

92.

92. Breeding of tilapia as mono sex (all males) results in:

a)

(A) Large harvest weigh

b)

(B) Small harvest weigh

c)

(C) Uniform size at harvest

d)

(D) A & C

93.

93. Mono sex – male tilapia population can be produced by:

a)

(A) Visual selection

b)

(B) Hybridization

c)

(C) Sex reversal

d)

(D) All answers are correct

94.

94. Production of all male tilapia population by visual selection:

a)

(A) Exposes fish fingerlings to stress

b)

(B) High mortality rate

c)

(C) Required great effort for large population

d)

(D) All answers are correct

95.

95. The most common method of sex reversal is:

a)

(A) Hybridization

b)

(B) Hormonal Sex reversal

c)

(C) Genetic manipulation

d)

(D) All answers are correct

96.

96. By crossbreeding of pure female Nile tilapia with pure male tilapia aurea, the resulting offspring are:

a)

(A) All males

b)

(B) All females

c)

(C) 50 % Male: 50 % Female

d)

(D) All answers are correct

97.

97. By crossbreeding of pure female Mozambican tilapia with pure male hornorum tilapia, the resulting offspring are:

a)

(A) All males

b)

(B) All females

c)

(C) 50 % Male: 50 % Female

d)

(D) All answers are correct

98.

98. In the early stages of development, immediately after hatching, the sex in fish can be reversed by:

a)

(A) Feeding fish fry on diet containing the steroid hormone

b)

(B) Immersing fish fry in water containing the steroid hormone

c)

(C) Injection of fish fry with the steroid hormone

d)

(D) A & B

99.

99. The major factors affecting the success of hormonal sex reversal are:

a)

(A) Hormone dose

b)

(B) Feeding time

c)

(C) Start and end date of treatment

d)

(D) All answers are correct

100.

100. To produce all male population of tilapia, fry must be feed on diet containing:

a)

(A) 17α-methyl testosterone

b)

(B) Synthetized androgen

c)

(C) 17β-estradiol

d)

(D) A & B

101.

101. Tilapia breeders prefer to cultivate fry or fingerlings of fish:

a)

(A) All males’

b)

(B) All females’ population

c)

(C) Mixed-Sex population

d)

(D) All answers are false

102.

101. Salmon breeders prefer to cultivate fry or fingerlings of fish:

a)

(A) All males’ population

b)

(B) All females’ population

c)

(C) Mixed-Sex population

d)

(D) All answers are false

103.

102. Hormone dose of 17α-methyl testosterone used for producing all male tilapia is:

a)

(A) 60 mg/kilogram diet

b)

(B) 60 mg/kilogram fish

c)

(C) 20 mg/kilogram diet

d)

(D) All answers are false

104.

103. Using YY super-male to produce monosex all male tilapia population considered the best method because it is:

a)

(A) Safe method

b)

(B) Guarantee of getting 100 % males

c)

(C) Avoid using the hormone

d)

(D) All answers are correct

105.

104. The most complex method for producing mono sex all male tilapia is:

a)

(A) Hybridization

b)

(B) Producing YY super-male

c)

(C) Hormonal treatment

d)

(D) Visual selection

بنك العملي الجزء الاول اسماك

Total questions: 105

Worksheet time: 53mins

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