Extra Ectotherm Short Answers Flashcards
(16 cards)
What are the 4 Critical Innovations in the Gnathostomes?
Jaws and mineralised skeleton, scales and teeth, paired fins, lateral line.
Who are the 5 Members of the Superclass Gnathostoma?
Chonrichthyes, osteichthyes, amphibia, reptiles, mammals.
What are the 4 Identifying Features of the Tuatara?
2 bony arches at back of skull, teeth fused to jaw bone, no earhole or penis, developed parietal organ.
What are the 4 Identifying Features of the Lizard?
1 bony arch at back of skull, teeth attached to inner jawbone and replaceable, has earhole and penis, simple parietal lobe.
What is the Optimum Ratio for Fish Swimming?
4.5 (length/height).
What is a Poikilotherm?
Interval temperature varies greatly.
What is a Homeotherm?
Interval temperature is non-variable.
What are 5 Characteristics of Chondrichthyes?
Heterocercal caudal fin, rough skin, two chambered heart, cartilaginous endoskeleton, no swim bladder.
What are 3 Advances of Chondrichthyes over Agnatha?
Jaws and teeth, paired fins, enlarged brain-case.
What are 5 Characteristics of Osteichthyes?
Specious, bony skeleton, scaled skin, 2 chambered heart, swim bladder.
What are 5 Reptilian Characteristics?
Horny epidermal scales, paired limbs, lungs not gills, 3 chambered heart, ossified skeleton.
What is the Identifying Feature of the Reptilian Order Crocidylia?
Tail is swimming organ.
What is the Identifying Feature of the Reptilian Order Sarcosuchus?
Large.
What is the Identifying Feature of the Reptilian Order Testudines?
Fusion of ribs and vertebrae for shell.
What is the Identifying Feature of the Reptilian Order Tuatara?
Temperature determines sex.
How did the Pentadactyl Limb Develop?
Change from propulsion to support, different portions, extensor and flexor muscles to generate force.
