brown algae lack true roots, but have similar structures, called ____________
that anchor them to the substrate
~ holdfasts
the commercially important unicellular protest that are used in filters, polishes
and other industrial processes are the
~ Diatoms
green algae is thought to have g...
✓~ an evolutionary modification that improves an organism's chances of survival and
reproductive success
What are homeoplastic features (homoplasy)?
✓~ similarity in the characters in different species that is due to convergent evolution,
not common descent characters that exhibit similarities
What does natural selection allow a population to do?
✓~ evolve over time
Name two geological activities that are common in areas where tectonic plates
meet.
✓~ earthquakes and volcanoes
,Name the steps of Darwin's concept of natural selection
✓~ 1. variation
2. overproduction
3. limits on population growth or a struggle for existence
4. differential reproductive success
evolution is genetic chance in a(n) _________ that occurs over time
✓~ population
The islands where Charles Darwin observed variation among organisms and
compared them to those organisms found on the mainland were the:
✓~ Galapagos Islands
Bird wings and insect wings are both adapted for flight but they are from two
very separate ancestors; this is known as _________ structures
✓~ homoplastic/ homologous
, organs or parts of organs that are seemingly nonfunctional and degenerate,
often undersized or lacking some essential part, are referred to as:
✓~ vestigal
__________ is the evolutionary history of a group of related species.
✓~ phylogeny
who proposed that the Earth's geological features formed slowly over time,
creating long periods for evolution?
✓~ Lyell
__________ penned an essay stating the populations have the capability to
outgrow their food supply resulting in disease, famine and competition
✓~ Thomas Malthius
breeds of dogs, such as German Shepherds occur as a result of:
✓~ artificial selection
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