PrepBharat

1. The class name ‘cyclostomata’ means
a) Marine, but reproduction takes place in fresh water
b) Mouth is anterio ventral, suctorial and circular
c) Ectoparasite of fishes
d) Jaws are absent

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2. The study of fishes is called
a) Ichthyology
b) Serpentology
c) Saurology
d) Chonchology

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3. (1) Marine with streamlined body
(2) Cartilaginous endoskeleton
(3) Mouth is ventral
(4) Caudal fin in Heterocercal
(5) Notochord is persistent throughout life
The above characters belong to which of the following organism (select the total number)?
Dog fish, Saw fish, Flying fish, Fighting fish, Angle fish, Jelly fish, Star fish, Trygon, Torpedo, Rohu, Catla, Magur
a) 3
b) 4
c) 6
d) 7

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4. The scales found in chondrichthyes is/are
a) Placoid
b) Cycloid
c) Ctenoid
d) All of these

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5. Which of the following is incorrect about cartilaginous fish?
a) Teeth are modified with placoid scales which are backwardly directed.
b) 5 to 7 pair of gills for respiration but without operculum (i.e., gill cover).
c) Air bladder is absent so they have to swim constantly to avoid sinking.
d) In males, the pelvie fins claspers are absent.

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6. Select the total number of organism which posses two chambered heart and are poikilothermal.
Scoliodon, Pristis, Clarias, Betta, Pterophyllum, Echinus, Devil Fish, Cuttle fish, Sea lily, Hyla, Labeo, catla, Torpedo, Trygon
a) 7
b) 9
c) 11
d) 13

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7. Select the difference which is wrongly written:
Cartilaginous fish                Bony fishes
a) Operculum is absent – Operculum is present
b) Fertilization is internal – Fertilization is external
c) Posses 5–7 pair of gills – Posses 4 pair of gills
d) Mostly oviparous – Mostly viviparous

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8. Which fish possess poison sting?
a) Scoliodon (dog fish)
b) Trygon
c) Torpedo
d) Pristis (saw fish)

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9. Which fish possess electric organs?
a) Scoliodon (dog fish)
b) Trygon
c) Torpedo
d) Pristis (saw fish)

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10. Males possess claspers in pelvic fins in class _____
a) Cyclostomata
b) Chondrichthyes
c) Osteicthyes
d) Amphibia

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11. Select the correct matching:
a) Petromyzon – Hagfish
b) Myxine – Lamprey
c) Carcharodon – Great white shark
d) Trygon – Torpedo

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12. (1) Stream-lined body
(2) Both marine and fresh water
(3) Mouth is terminal
(4) Caudal fin homocercal
(5) 4 pair of gills with operculum
Which class has the above characters?
a) Cyclostomata
b) Chondrichthyes
c) Osteichthyes
d) Amphibia

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13. Osteicthyes possess which kind of scales?
a) Placoid
b) Cycloid
c) Ctenoid
d) Both (b) and (c)

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14. External fertilization is found in
a) Sting ray
b) Flying fish
c) Saw fish
d) Dog fish

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15. Select the total number of bony fishes from the following:
Exocoetus, Hippocampus, Labeo, Catla, Clarias, Betta, Pterophyllum, Trygon, Torpedo, Pristis, Scolidon, Carcharodon.
a) 6
b) 7
c) 8
d) 12

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16. Air bladder which regulates buoyancy is present in
a) Cyclostomata
b) Cartilaginous fish
c) Bony fishes
d) Amphibians

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17. Select the correct matching:
a) Betta – Fighting fish
b) Hippocampus – Flying fish
c) Pterophyllum – Fighting fish
d) Clarias – Labeo

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18. Select the incorrect matching:
a) Scoliodon – Dog fish
b) Pterophyllum – Angel fish
c) Clarias – Magur
d) Trygon – Torpedo

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19. Select the correct matching:
a) Cyclostomata – gills (6–15 pairs)
b) Chondrichthyes – gills (5–7 pairs)
c) Osteichthyes – gills (4 pairs)
d) All are correct

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20.Which of the following is a marine bony fish?
a) Exocoetus (flying fish)
b) Hippocampus (sea-horse)
c) Both (a) and (b)
d) Saw fish (pristis)

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