Abeka Biology Chapter 18 Flashcards Preview

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Flashcards in Abeka Biology Chapter 18 Deck (36):
1

What animals regulate their temperature by external factors, such as lying in the sun when their body temperature is too low or cooling off in the shade when their temperature is too high?

cold-blooded

2

What are animals whose body temperatures fluctuate with the temperature of their surroundings?

poikilotherms

3

What reptiles bear their young alive rom eggs?

ovoviviparous

4

What reptiles, which are elongated, four-legged reptiles have a tapered tail are the most numerous of the reptiles?

lizards

5

What kind of movement do most kinds of snakes move by?

lateral undulation

6

What snakes use rectilinear movement when stalking prey?

Thick-bodied snakes, such as puff adders and Asian pythons.

7

What movement do desert-dwelling snakes such as the North American sidewinder and the carpet viper and horned viper of Africa use?

sidewinding

8

What bone on the skull loosely attaches to the lower jaws of snakes?

quadrate bone

9

What tiny cavities in the roof of its mouth contain nerve endings that are extremely sensitive to odor?

Jacobson's organ

10

What are zoologists that study reptiles and amphibians called?

Herpetologists

11

What are the 3 largest snakes?

pythons, anacondas, and boas.

12

By what do scientists group poisonous snakes according to?

Their fangs. Hollow and grooved venom-ingesting teeth.

13

What snakes which have immovable fangs in the front of the upper jaw are poisonous?

Elapids

14

What is the largest venomous snake?

King cobra (18 ft)

15

What venomous snakes, which have long, movable fangs attached o the front of the upper jaw, live in the temperate regions of the world?

viperids

16

What toxin affects the nervous system, which controls the functioning of the heart, lungs, and muscles.

neurotoxins (nerve poison)

17

What toxin damages blood vessels and destroys red blood cells?

hemotoxin (blood poison)

18

What are antibodies that attach the toxin molecules and neutralize their effect?

antitoxoins or antivenins

19

What is a reptile with a shell and toothless jaw?

turtle

20

What is fused to the turtles ribs and thoracic vertebrae?

The carapace (upper shell)

21

What is fused to the clavicles of turtles?

plastron (lower shell)

22

What is a state of summer dormancy or limited activity?

estivation

23

What term refers to all the members of chelonia, whether aquatic or terrestrial?

turtle

24

What term is generally reserved for land turtles with feet and claws suitable for terrestrial life?

tortoise

25

What large, thick-skinned, long tailed, aquatic reptiles are the largest living reptiles?

crocodilians

26

What is the only species in a family and order of its own, and is commonly known as the tuatara?

sphenodon

27

What eye is situated on the top of the tuataras brain, that senses radiation?

parietal eye

28

What are probably the most famous of all extinct creatures?

dinosaurs

29

What group of cold-blooded vertebrates, live both in land and in water?

amphibians

30

How many heart chambers do all amphibians have?

3

31

What are leaping, tailless amphibians with smooth skin?

frogs

32

What are leaping, tailless amphibians which have rough, "warty" skin?

toads

33

What are the three types of branched pigment cells that control the skin coloration of amphibians as well as many reptiles and fish called?

chromatophores

34

What two additional teeth extend from the roof of the mouth of the frog?

vomerine teeth

35

What special membrane holds the pancreas of a frog in place?

mesentery

36

In what gelatinous structure does the male salamander deposit sperm on a leaf or stick?

spermatophore