Bio 108 - Lecture 23 Flashcards Preview

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Flashcards in Bio 108 - Lecture 23 Deck (15):
1

Cladogram Definition of Bony Fishes

Paraphyletic

2

Class Osteichthyes

Original class that made up bony fish

3

Some Characteristics of Bony Fish

Ossified Endoskelton
Bony Scales
Swim Bladder
Flexible Fins
External Fertilization

4

Operculum

Gill openings covered by a single protective flap

5

3 Classes of Bony Fish

Actinopterygii
Actinistia
Dipnoi

6

Class Actinopterygii

Actin = Ray
Flexible rays that support fins

7

Class Actinistia

Lobe-finned fishes
Pectoral and Pelvic Fins

8

Class Dipnoi

Lungfishes
Pneu = air/breath
Gills and Lungs
Two modes of gas exchange

9

Tetrapods

two pairs of sturdy skeleton-supported limbs with digits
- Terrestrial
- 5 Digits per limb

10

Tiktaalik rosea

- Intermediate between fishes and tetrapods

11

Two groups of Tetrapods

Amphibia
Amniota

12

Class Amphibia

Monophyletic Group
Thin permeable skin
Use buccal pump to inflate lungs

13

Life cycle of Amphibia

- Eggs lack shell
- internal fertilization
- Aquatic larvae
- amphi = both

14

Order Anura

Living order of amphibia
- hind legs for jumping
- lack tail
- toads have poisen glands behind eyes

15

Order Urodela

Has tails as larvae and adults
Salamanders
Paedogenetic