M6: Evidences Of Evolution Flashcards
(30 cards)
two types of EVIDENCES OF EVOLUTION
F________
B___________
fossil
biological
fossil evidence include
b____ fossils
t_____ fossils
body
trace
biological evidence include
- C_________ A______
- E__________
- M___________ Biology
- comparative anatomy
- embryology
- molecular biology
Microfossil and Macrofossil
Body Fossils -
Remains of tiny animals and plants found in rocks and sediments
Microfossils
Fossils of bacteria, foraminifera, diatoms, very small invertebrate shells or skeletons, pollen, and tiny bones and teeth of large vertebrates
Microfossils
A fossil large enough to be studied and identified without the use of a microscope.
Can be the actual remains of an organism
Macrofossils
Can be fossilized impressions of the organism onto its surroundings
Macrofossils
Can be hardened minerals that form the external features of an organism
Macrofossils
Can be made up of original material or original tissue
Macrofossils
is the preserve evidence of the activity of an organism.
Trace fossils
Example, foot imprints in mud made by walking on top or tracks made by organisms that burrow on sand or mud.
Trace fossils
two types of FOSSIL FORMATION
M___________
C______________
Mineralization
Carbonization
This happens when the remains of dead animals are buried in soil, mud, or sediment and minerals in water from the ocean, rain, or river replaced the organism’s original body structure. This mineral hardens into a fossils
Mineralization
A fossil forms when a dead organism is compressed overtime and pressure drives off the organism’s liquid and gases, only the carbon outline or film of the organism remains.
Carbonization
2 ways to DETERMINING A FOSSIL AGE
R____- age dating
A_________- age dating
Relative- age dating
Absolute- age dating
determines the relative order in which species have appeared on earth.
Relative- age dating
what rock is at the top? the youngest or the oldest?
youngest
measure the ratio of unstable isotopes and stable isotopes to find the age of igneous rocks
Radioactive decay
used in absolute age dating
Radioactive decay
are the body parts of organisms that are SIMILAR IN STRUCTURE and position but DIFF IN FUNCTION
Homologous structures
re the body parts of organisms that have the SAME FUNCTION, but DIFF IN STRUCTURE.
Analogous structures
are body parts that have lost its original function over time.
Vestigial structures
Comparison of Embryos
Embryos of different species resemble each other during embryological development.
Embryology