2 Name the major characteristic that distinguishes vertebrates between lancelets and tunicates.
3 A backbone distinguishes vertebrates between lancelets and tunicates.
4 Vertibrates have a well developed brain protected by a????
6 Are vertebrates warm or cold blooded?
7 Vertebrates can be warm or cold blooded.
8 What is a vertebrae?
9 Vertebrae are strong bones that form together to form the backbone. They also surround the spinal chord, and help support the rest of the body.
10 When most vertebrates grow, what is the cartilage in their body replaced by?
11 The cartilage in their body is replaced by bone.
12 Name two body parts that help fish swim.
13 Fish use fins to help them steer and stop, they have scales to help protect them, and gills to help them swim.
14 Most fish usually have a??????????? system that helps them detect vibrations in the water.
15 Most fish have a lateral line system.
16 This organ is found in fish, and it helps remove oxygen from the water. They are also used to remove carbon dioxide from the blood.
17 A gill helps fish to remove oxygen from the water, and to remove carbon dioxide from blood.
18 How do most fish reproduce? (externally or internally)
19 Most fish reproduce by external fertilization.
20 Name the three types of fish, and an example of each type.
21 The first type of fish is the jawless fish, which includes Hagfish and Lampreys. Cartilaginous fish include sharks, stingrays, and skates. Finally, bony fish include Lungfish, Masked Butterfly fish, Pikes, ect.
22 Describe what the skin of an amphibian is like.
23 An amphibian has thin, smooth, and moist skin that can absorb water and oxygen.
24 What does the word amphibian mean.
25 Amphibian means double life.
26 Name two groups of amphibians.
27 There are four groups of amphibians: caecilians, salamanders, frogs, and toads.
28 Describe the process of metamorphasis for amphibians.
29 The amphibian eggs are fertilized and waiting to hatch. Once they hatch, a tadpole comes out. This tadpole feeds on yolk stored in it s body, and has gills. Then the tadpole begins to feed on other things, and it starts to grow legs. The tail and lungs on the tadpole then disappear, and the lungs become fully functional.
30 Why are amphibians said to have a double life?
31 Amphibians are said to have a double life because they spend one stage of their life in the water, and the other stage of their life on land.
32 Describe the skin of a reptile.
33 Because a reptile s skin helps reduce water loss, it is thick and dry.
34 Describe an amniotic egg.
35 An amniotic egg is an egg that holds fluid and protects the embryo. The amniotic eggs that reptiles lay have a shell, which helps prevent the loss of fluid inside the egg.
36 What part of an amniotic egg provides water and protein to the embryo.
37 The albumen provides water and protein to the embryo.
38 What type of fertilization do reptiles usually use to reproduce.
39 Reptiles usually use internal fertilization to reproduce.
40 Name the four groups of reptiles.
41 The four groups of reptiles are tuataras, turtles and tortoises, crocodiles and alligators, and snakes and lizards.
42 What is a tadpole?
43 A tadpole is an aquatic, fish-shaped larva of a frog or toad.
44 What is a lung?
45 A lung is a saclike organ that takes oxygen from the air, and gives it to the blood.
46 What is a swim bladder?
47 A swim-bladder is a sac filled with gas that is used to control buoyancy in a fish. It can also be called a gas bladder.
48 What is a lateral line system?
49 A lateral line system is a faint line that can be seen on both sides of a fishes body. It is many rows of tiny sense organs that sense vibrations in the water.
50 What is an allantois?
51 An allantois is the part of the amniotic egg that stores the embryos waste. It also helps pass oxygen to the embryo from pores in the shell.
52 What part of the amniotic egg is filled with fluid and surrounds and protects the embryo?
53 The amniotic sac surrounds and protects the embryo.