Evolution Flashcards
What is similar in fishes, salamanders, lizards, birds, cats and humans?
embryonic development
shallow external molds left by an animal or plant tissue with little or no organic materials present.
Imprint or Impression
the other side with more organic material
Compression
method used to determine the age of the rocks by comparing them with the rocks in the other layer.
Relative Dating
first and oldest organisms that lived on Earth
invertebrates
method used to determine the age of rocks using the decay of radioactive isotopes present in rocks.
Radiometric dating
used to tell the age of organic materials. Art collectors use this to determine if a piece of artwork is genuine
Carbon Dating
What do all organisms have?
Decaying Carbon-14
Structures from different species which have similar internal framework, position and embryonic development
Homologous
same origin (structure) but different functions
Homologous
similar functions but different origin (structure)
Analogous
The presence of homologous structures is a strong indicator that the organisms evolved from common ancestors. This type of evolution is called?
Divergent
splitting of an ancestral population into two or more sub populations that are geographically isolated from one another.
Divergent
increase in similarities among species derived from different ancestors as a result of similar adaptation to similar environment
Convergence
In this kind of evolution, analogous structures of unrelated organisms from different ancestors develop similar function such as butterfly wings and bird wings.
Convergence
the first evolutionist to believe that organisms change over time. Developed Theory of Need, Use and Disuse, Acquired Characteristics
Jean Baptiste de Lamarck
states that organisms change in response to their environment. Their ability to survive helped them develop characteristics necessary for them to adapt in a given environment
Theory of Need
organs not in use will disappear while organs in use will develop.
Theory of Use and Disuse
is a theory that physiological changes acquired during an organism’s lifetime can be passed down to the offspring. Example is long necks of giraffes.
Theory of Acquired Characteristics
Charles Darwin suggested the Theory of Natural Selection after his voyage in?
Galapagos Island in HMS Beagle
An invertebrate, it lived in a shallow marine environment during Ordovician and Silurian periods.
Trilobite
look like plants but are actually animals related to modern day starfish, They belong to Phylum Echhinodermata and lived during Triassic Period.
Crinoid Stem
Fossilized leaf that is once part of an early vascular plant during Carboniferouis Period
Vascular Plant
