Ch. 13-17 Flashcards
Which is NOT a benefit of the understanding of evolution to understanding the field of biology
Understanding evolution helps us to understand why stars and galaxies change over time
The common house mouse species, Mus musculus, has the following taxonomic classification: Mus, Muridae, Rodentia, Mammalia, Chordata, Animalia, Eukarya. Which part of the name is the Family
Muridae
Natural selection can be defined as
A process in which organisms with certain inherited traits are more likely to survive and reproduce then individuals with other traits
During his trip on the Beagle, Darwin found that
Plants and animals living on a continent seemed more closely related to each other then plants and animals living in similar regions on other continents
Which is a component of the fossil record
Bones of dinosaurs
Homology is the evidence of
Common ancestry
Which is NOT a requirement of natural selection
Gene flow
Which statement is true
Natural selection works on variation already present in a population
Humans are considered what type of primate
Apes
A change is the gene pool due to chance results in
Genetic drift
The action of humans are having negative impacts on the environment at a global scale. Of the options listed, which impact is an EXCEPTION to this trend
Decrease in human cardiovascular disease
Biological species consist of groups of
Population
Under the biological species concept, what criterion is used to assign population of organisms to the same biological species
Ability to interbreed and produce fertile oppspring
The biological species concept cannot be applied to
Fossils
A reproductive barrier that prevents individuals from closely related species from interbreeding is an example of
A prezygotic barrier
Which type of reproductive isolating mechanism is described by a situation in which female fireflies’ mate only with males who emit light in a particular pattern
Behavioral isolation
The type of reproductive barrier that occurs when reproductive structures of different species are physically incompatible is referred to as
Mechanical isolation
When two frogs species, Rana pipiens and Rana sylvatica, mate, the offspring die early in embryonic development. This is an example of
Reduced hybrid viability
Which scenario describes allopatric speciation
A population of squirrels is separated by the Grand Canyon. The two subpopulation evolve into two distinct species
Sympatric speciation specifically EXCLUDES
Geographic isolation
What is the most diverse group of arthropods
Arachnids
All __ exhibit the arthropod characteristic of multiple pars of specialized appendages
Crustaceans
These arthropods are carnivorous, have one pair of legs per body segment, and a pair of poison claws used for defense and to paralyze prey
Centipedes
Which of the following would be considered an arthropod
Hermit crabs
Which animals have a cylindrical body that is tapered at both ends
Roundworms
Which of the following is not a bivalve
Squids
What name is given to the food-trapping cells of sponges
Choanocytes
__ was the first species to extend humanity’s range from Africa to other countries
Homo erectus
A characteristic of arthropods that has allowed for their great success is the presence of
Specialized segments
Radial symmetry is seen in a
Snowflake
