Flashcards in LAB: Craniates Part 2 Deck (13)
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1
Craniates Part 2
- vertebrates that have limbs with digits
- arose from lobe-finned fish
- endoskeleton of bone
- 1. Axial - skull and vertebrate column
- 2. Appendicular - girdles
- 1. Axial - skull and vertebrate column
- 2. Appendicular - girdles
2
Amphibians
- transitional b/w water and higher land groups
-
Dual life cycle - water/land
-
Anamniotic eggs - lack shell
- Undergo metamorphosis
- Ectothermic
3
Frogs
lacks tails, vocalize
4
Toads
- Warty skin (glands)
-
parotoid gland produce defense chemicals
5
Salamanders and Newts
- Have elongated tails
6
Amniotes
- Embryos has extra embryonic membranes
- Has shell
- 2 groups
- 1. Reptiles
- 2. Mammals
- 1. Reptiles
- 2. Mammals
7
Reptiles
- Skin covered by scales/feathers
- Digits with claws
- Most have 3 chambered heart
- Ectotherms
8
Crocodilians
- Temperature of nest determines sex
9
Turtles
- Have 2 part shell:
- Carapace
- Plastron
- Carapace
- Plastron
10
Squamates
- includes lizards and snakes
-
Snakes
-
kill by constriction, suffocation, venom
- evolved from lizards
- kill by constriction, suffocation, venom
- evolved from lizards
11
Birds
- are now classified as reptiles
- evolved from theropod dinosaurs
- Archaeopteryx
- Archaeopteryx
12
Mammals
- Endothermic
- Hair
- Mammary glands, milk
- 4 Chambered hearts
- Most live birth with placenta
13
Frog ANATOMY
