Fish

Question 1

1. It is called the age of the Fish
2. An aquatic vertebrate with gills, limbs (if present) in the forms of fins, and usually with a skin covered
   in scales of dermal origin
3. They have no jaws and include extinct ostracoderms and living hagfishes and lampreys

Answer 1

Devonian Period
Fish
Agnathans

Question 2

4. Fishes that lost the heavy dermal armor and adopted cartilage as skeleton
5. Presented in Devonian but became extinct by the lower Permian and they resemble bony fish but
   have heavy spines

Answer 2

Cartilaginous Fishes
Acanthodians

Question 3

6. Contains the coastal tiger and bull sharks and the hammerhead

Answer 3

Carcharhiniformes

Question 4

7. Join tetrapod as a monophyletic lineage of ___________
8. The __________ became extinct in the Carboniferous and left no direct descendants
9. These are the dominant fishes today that has two distinct lineages: the ray-fined and the lobe-finned
   fishes

Answer 4

Gnathostomes
Placoderms
Bony-Fishes

Question 5

10. What class do Hagfishes belong and are entirely marine
11. What class do Lampreys belong and are anadromous wherein they live in salt water and spawn in
    freshwater
12. The larva of Lampreys are __________ until it metamorphosis into an adult

Answer 5

Class Myxini
Class Cephalaspidomorphi
Suspension-Feeder

Question 6

13. The Cartilaginous Fishes and have well-developed sense organs, powerful jaws and predaceous habits
14. Contains large, pelagic sharks such as the white and mako shark
15. Dogfish sharks are belonging to order _______

Answer 6

Class Chondrichthyes
Order Lamniformes
Order Squaliformes

Question 7

16. What do you call the pointed body of sharks
17. What do you call the pattern wherein the front of the ventral mouth is the pointed rostrum and the
    tail has a longer upper lobe
18. In male shark it is modified to form a clasper used in copulation

Answer 7

Fusiform
Heterocercal
Medial part of pelvic fin

Question 8

19. Common sensory organ of fishes that consist neuromasts
20. Kidney of sharks
21. T or F. All chondrichthyans have internal fertilization

Answer 8

Lateral Line
Opisthonephric Kidney
True

Question 9

22. Some oviparous sharks and rays lay a capsule or ________ that catches onto the kelp with tendrils
23. Members of this small subclass are remnants of a line that diverged from the earliest shark lineage
    wherein there are 31 extant species
24. Constitute 96% of all living fishes and half of all vertebrates

Answer 9

Mermaid’s purse
Subclass Holocephali
Teleosts

Question 10

25. They are the ray-finned fishes. Over 23,600 species constitute the most familiar bony fishes
26. It maintains the buoyancy of fish
27. The ______ tail allowed greater speed and buoyancy
28. Only seven species are alive today; six species of lungfishes and the coelacanth

Answer 10

Class Actinopterygii
Swim Bladder
Homocercal
Class Sarcopterygii

Question 11

29. Tail became symmetrical with a continuous fin known as ______
30. Scale of teleost fishes
31. Scale of cartilaginous fishes
32. Scale of non-teleost bony fishes

Answer 11

Diphycercal
Cycloid and Ctenoid
Placoid
Ganoid

Question 12

33. They are the living fossils that arose during Devonian period
34. The shark liver has _______, a fatty hydrocarbon that acts to keep sharks a little buoyant
35. It is movable flap that covers the pharyngeal cavity of fish’s gill

Answer 12

Coelacanth
Squaline
Operculum

Question 13

36. Are a third group, and a crop the abundant microorganisms of the sea
37. Represent ovoviparous fish that develop in the ovarian cavity
38. T or F. Growth is temperature dependent; warmer fish grow rapidly

Answer 13

Suspension-feeders
Guppies and Mollies
True

Question 14

39. It is the most economical form of motion because water buoys the animal
40. Includes skates, sawfish rays, electric rays, stingrays, manta rays and others

Answer 14

Swimming
Order Rajiformes