Low plants, lacking vascular tissue:
Mosses
One of the first plant groups to have vascular tissues and true roots:
Ferns
Larger plants with vascular tissue, fronds, and sperm that swim:
Ferns
Produce flowers and seeds:
Angiosperms
Produce naked seeds in cones:
Gymnosperms
Sepals and petals are present:
Angiosperm
Require water for fertilization to occur:
Fern and Moss
Produce spores for reproduction:
Fern and Moss
Produce naked seeds:
Gymnosperm
Able to conduct water up through the stem, often called conifers:
Gymnosperm
Pollination occurs:
Angiosperm
Contain a stigma, style, and ovary:
Angiosperm
One of the tallest plants living:
Gymnosperm
Adaptation that protects a living embryo:
Angiosperm
Cotyledons provide energy for the newly developing organism:
Angiosperm
Classified as nonvascular plants:
Moss
Liverworts and mosses belong to this group:
Moss
Group of plants that produce flowers:
Angiosperm
Fruits are produced by this plant group:
Angiosperm
Plants in this group have a symbiotic relationship with algae:
Moss
The bones labeled in the figure above are both:
Vestigial body parts
Fossils found in the lowest geological strata are generally the most:
Primitive
Critical to the theory of evolution, Darwin needed to include an idea that was not generally accepted by the scientists of society at that time. That idea was:
That the Earth must be very old
Urban rats have resisted effects to poison them out because they:
Breed rapidly and evolve by natural selection
Which of the following evolve?
-Population
-Genera
-Kingdoms
-Individuals
Populations
Wings of insects and birds are result of convergent evolution. This means that:
Insects and birds have each independently evolved structures that serve the same function (flight) but have done so in very different ways
The presence of vestigial organs supports evidence of evolution because:
The vestigial organ is similar to a functional organ in a related species, having been passed down from a common ancestor.
The wing of a bird and the wing of an insect are:
Homologous structures
When comparing chick and pig embryos, the similar eyes, pharyngeal pouches, and post-anal tails are evidence of:
Common ancestry
Natural selection results in:
Offspring being better adapted to their current environment
According to Darwin, natural selection is based on the ______ found in populations:
Variations
The fossil record is incomplete because:
-Very few organisms were preserved as fossils
-Organisms tend to decay before becoming a fossil
-Geological processes may destroy fossils
The forelimbs of early mammals were similar in all features except:
Function
New alleles arise by:
Mutation
If the frequency of a recessive allele is 36 percent, the frequency of the dominant allele would be what percent?
64
A species is composed of:
Organisms that have the potential to interbreed and produce fertile offspring
Which of the following does not generate genetic variation within a population?
Adaptation
All of the genes and all of their associated alleles within a population represent the population's:
Gene Pool
Dominance causes an allele to become more common:
False
In random mating, individuals choose the most attractive mate:
False
In the process of natural selection, individuals that are most fit are the ones that are most likely to reproduce:
True
Microevolution is the term that applies to small-scale changes over a long period of time:
False
Although Lamarck hypothesized that adaptations to the environment did occur, he also believed that offspring inherited characteristics acquired by their parents during their lifetime:
True
Lamarck's hypothesis has since been discredited by Darwin's theory of natural selection:
True
The observation that different geographical areas sometimes exhibit plant and animal communities of similar appearance, even though the individual plants and animals are not closely related, is called:
Convergent Evolution
The key point in Darwin's proposal is that the ______ imposes the conditions that determine the direction of selection:
Environment
Natural selection, as a mechanism of evolution that, acts on variants within populations and ultimately leads to the evolution of different species was proposed by:
Darwin
Darwin proposed that natural selection occurs in an environment by:
Favoring heritable features that make the organism better suited to survive and reproduce
An insect population that becomes resistant to a commonly used insecticide is an example of ______
Natural Selection