1.___________________________ 2.___________________________ | The 2 major requirements for flight in any organism. |
3.___________________________ | 1 piece of evidence supporting the arboreal hypothesis for the origin of bird flight. |
4.___________________________ | A characteristic shared by only a small number of bird species is known as a ______ characteristic. |
5.___________________________ | Avian order with totipalmate feet. |
6.___________________________ | The percentage of total body mass made up of pectoralis muscle in flying birds. |
7.___________________________ | Large heavy birds have ____ (lower or higher) wing loading than small birds. |
8.___________________________ | One example of a large flightless avian predator filling the bipedal carnivore niche in the Tertiary Period. |
9.___________________________ | Dominant muscle fiber type in the pectoralis of the chicken. |
10.__________________________ | Muscle powering the upstroke of the wing. |
11.__________________________ | Tibial extension of knee joint in divers providing oar-like leverage from the leg muscles. |
12.__________________________ | Type of shivering in birds where opposing muscle groups work against each other. |
13.__________________________ | One problem with trying to establish phylogenies based solely on morphological evidence. |
14.__________________________ | The selective factor leading to the evolution of flight according to the cursorial hypothesis. (Hint: I'm looking for the advantage provided by the intermediate stages). |
15.__________________________ 16.__________________________ | 2 primitive features not present in modern birds that Archaeopteryx shared with reptiles. |
17.__________________________ | Name one adaptation to reduce weight in birds. |
18.__________________________ | Aerodynamic structure producing lift. (Hint: a bird wing is one). |
19.__________________________ | The most direct type of biochemical evidence used for establishing bird phylogenies. |
20.__________________________ | The reason why the musculature is shifted ventrally in birds. |
21.__________________________ | What skeletal feature allows the musculature to be shifted ventrally? |
22.__________________________ | Structures acting to fuse the rib cage together in modern birds. |
23.__________________________ 24.__________________________ | The 2 functions of muscles in birds. |
25.__________________________ | Normal range of body temperatures in birds. |
26.__________________________ | Feather attached to 1st digit acting as a wing slot. |
27.__________________________ 28.__________________________ | 2 modifications associated with flightlessness. |
29.__________________________ 30.__________________________ | The 2 specific groups of reptiles that are potential ancestors to the birds. |
a) Passerines | b) Ichthyornithiformes | c) Enantiornithes |
d) Hesperornithiformes | e) all were present in the Cretaceous |
a) Gaviiformes | b) Procellariiformes | c) Charadriiformes |
d) Passeriformes | e) Sphenisciformes |
a) scapula | b) coracoid | c) furcula |
d) synsacrum | e) all are parts of the pectoral girdle |
a) relatively high aerobic enzyme activities | b) relatively high glycolytic enzyme activities | c) fatigue-resistant |
d) high mitochondrial numbers | e) all are properties of FOG fibers |
a) elliptical | b) high load bearing | c) high speed |
d) high aspect ratio | e) high lift |
a) thrust | b) drag | c) stalling |
d) loss of aspect ratio | e) all of the above |
a) 2500 | b) 5700 | c) 8200 |
d) 9600 | e) 12,800 |
a) mid-Jurassic | b) early to mid Tertiary | c) Pleistocene |
d) late Cretaceous | e) early Pliocene |
a) Passeriformes | b) Apodiformes | c) Coraciiformes |
d) Psittaciformes | e) Charadriiformes |
a) neoteny | b) taxonomy | c) convergence |
d) adaptive radiation | e) cladistics |
Living Species | Derived Characters |
Species A = C,Z,0,B | C = crest |
Species B = 0,0,F,0 | Z = zygodactyl feet |
Species C = C,Z,F,0 | F = forked tail |
Species D = C,0,0,0 | B = decurved bill |