Solved MCQs on Fishes
1. Adaptive radiation in fishes started about number of million
years ago:
(a)
1200
(b)
500
(c)
1000
(d) 1500
(b)
500
2. Bony armor fishes are:
(a) Placoderms
(b) Ostracoderms
(c) Elasmobranchs
(d) None
(b) Ostracoderms
3. The fish remained buried in the mud and sand is:
(a) Ostracoderms
(b)
Lamprey
(c) Hag Fishes
(d) Sharks
(c) Hag Fishes
4. Sucking mouth and rasping tongue is present in :
a) Ostracoderms
(b) Hag fishes
(c) Lampreys
(d) Sharks
(c) Lampreys
5. The larva of Lamprey is:
(a)
Trochophore
(b)
Tadpole
(c)
Ammocoete
(d) Tonaria
(c)
Ammocoete
6. The number of semicircular canals in Gnathostomes are:
(a) 2
(b)
3
(c)
4
(d) 5
(b)
3
7. The armored fishes are:
(a) Chondrichthyes
(b) Osteichtliyes
(c) Placoderms
(d) Acanthodians
(c) Placoderms
8. The extinct body fishes are:
(a) Chondrichthyes
(b) Osteichthyes
(c) Placoderms
(d) Acanthodians
(d) Acanthodians
9. Cartilaginous fishes are:
(a) Placoderms
(b) Acanthodians
(c) Chindrichythyes
(d) Osteichthyes
(c) Chindrichythyes
10. Placoid scales are present in:
(a)
Salmons
(b)
Lamprey
(c)
Sharks
(d) Hag Fishes
(c)
Sharks
11. Rat fishes are:
(a)
Salmons
(b)
Lamprey
(c) Sharks
(d) Chimeras
(d) Chimeras
12. Number of species of Osteichthyes are:
( a) 10,
000
(b) 15,
000
(c) 20, 000
(d) 25,000
(b) 15,
000
13. The lung fish found in tropical Africa is:
(a)
Neoceratodus
(b) 15,
000
(c)
Lepidosiren
(d) None
(b) 15,
000
14. The fish live in stagnant water is:
(a)
Lepidosiren
(b)
Protopterus
(c)
Neoceratodus
(d) None
(c)
Neoceratodus
15. Which fish of the following aestivate?
( a)
Neoceratodus
(b)
Protopterus
(c)
Lepidosiren
(d) None
(c)
Lepidosiren
16. Which fish is important for
caviar?
(a)
Lepidosiren
(b)
Protopterus
(c)
Neoceratodus
(d) Sturecons
(d) Sturecons
17. The number of species of teleosts fishes are:
(a)
10.000
(b)
15.000
(c )
20.000
(d) 25.000
(c )
20.000
18. Large rostrum is found in:
(a) Paddle
fishes
(b)
Lamprey
(e)
Sharks
(d) Chimeras
(a) Paddle
fishes
19. The number of chambers in the
heart of fishes are:
(a)
1
(b)
2
(c)
3
(d) 4
(b)
2
20. Number of afferent vessels are:
(a)1
(b)
2
(c)
4
(d) 5
(d) 5
21. Which of the followings aortic arches form pulmonary artery in
lung fishes?
(a)
(b)
IV
(c)
V
(d) VI
(d) VI
22. The major osmoregulatory organ in fishes is:
(a)
Gills
(b)
Kidney
(c)
Liver
(d) Stomach
(b)
Kidney
23. Elasmobranchs remove sodium chloride through:
(a)
Gills
(b)
Kidney
(c)
Liver
(d) Rectal glands
(d) Rectal glands
24. Some elasmobranchs have modified pelvic fin for copulation
called:
(a)
Penis
(c) Cloaca
(c)
Clasper
(d) None
(c) Clasper
25. Which of the following fishes is viviparous?
(a)
Salmons
(b)
Lamprey
(c)
Sharks
(d) Chimeras
(c)
Sharks
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