Test 2 Prep Flashcards
Differences in courtship behavior are an example of post zygotic barriers to mating.
F. Prezygotic
A small isolated population is more likely to change into a new species than a large population.
T.
The most metabolically diverse organisms are the prokaryotes
T.
Reptiles represent a polyphyletic phylogeny
F. Paraphyletic
A phylogeny is constructed using analogous characters
F. Homologous
Flatworms have a true body cavity or coelom
F. No Coelom / Acoelomate
The prezygotic barrier where gametes are unable to recognize each other due to different molecular receptors is called mechanical isolation
F. gametic isolation
Allopolyploidy is a form of sympatric speciation that involves errors in meiosis and hybridization between two different species of organisms
T.
Sponges are the first animals with true tissues
F. No tissues. Cnidarians or Jellyfish Okay
birds and mammals independently evolved a high metabolism
T
One of the 4 characteristics of all chordates is extreme cephalization.
F. Notochord, dorsal nerve cord, muscular tail, gill/ pharyngeal slits- give any one of these chordate characteristics. Vertebrates may have extreme cephalization, but it is not a defining character- more primitive
When a horse and donkey mate, they produce mules that are sterile. This is an example of postzygotic isolation
T.
Homeotic genes contribute to evolutionary novelty by altering an organisms body plan.
T.
Viruses (e.g. influenza ) are subject to natural selection processes.
T.
After the demise of dinosaurs, the process by which mammals diversified into new species as they filled newly opened ecological niches is called adaptive radiation.
T.
A recent view of early prokaryotes states they obtained their energy from inorganic sources and their carbon from CO2. Thus they are called photoautotrophs.
F. Chemoautotrophs ( no organic sources for early prokaryotes) Lithotrophs okay too
Changes in the timing or rate of developmental events, such as sexual maturation are generally known as serial homologies.
F. Heterochrony
Protists alive today are the closest relatives to both animals and plants
T.
The concept of “species” has changed over time. What is this essential aspect of the Biological Species Concept (BSC)?
a. individuals of a species occupy identical ecological roles
b. all members of the same genus are able to mate successfully
c. individuals with a genus share behaviors and appearance.
d. Individuals of a species are able to mate and produce fertile offspring in the wild.
D.
Which of the following is the most successful (abundant) of the animal phyla?
a. annelids
b. anthropods
c. vertebrates
d. prokaryotes
B.
The predominant generation in the life cycle of angiosperms is the?
a. seed
b. sporophyte
c. gametophyte
d. sperm
b. sporophyte
What defines a chordate?
a. ability to live on land
b. development of an anus from the blastopore
c. presence of a well-developed circulatory system
d. presence of four specific morphological traits.
D. presence of four specific morphological traits
One of the techniques developed by Willi Hennig for reconstructing the phylogenic histories of organisms is…
a. cladograms
b. punctuated equilibrium
c. parsimony
d. anagenesis
c. parsimony
Which of the statements below about the Fungi is correct?
a. all fungi are heterotrophs, but are able to switch to photosynthesis when stressed or the food supply is depleted
b. all fungi are saprophytic
c. all fungi receive their nutrients through absorption
d. most fungi are parasitic in their feeding methods
e. all the statements above are true
c. all fungi receive their nutrients through absorption
Which animals are protostomes? sponge earthworm roundworm arthropod liver fluke sea urchin
earthworm
roundworm
arthropod
liver fluke
Which are characteristics of chordates? notochord muscular tail pharyngeal slits 3-bone middle dorsal nerve cord
notochord
muscular tail
pharyngeal slits
dorsal nerve cord
Which organisms have amniotic eggs (amniotes)? lamprey snakes duck-billed platypus zebra frogs penguins
snakes
duck-billed platypus
zebra
penguins
Which of the following land plants have vascular tissue? Bryophytes (mosses) ferns gymnosperms angiosperms
ferns
gymnosperms
angiosperms
