BIO 1130 Study Guide - Midterm Guide: Phanerozoic, Paleozoic, Carboniferous

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BIO 1130 Full Course Notes

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Change in climate, vertebrates moving on land, decomposiion cycle for plant issues (by fungus), proper carbon cycling. One of the biggest exincion (95% of biodiversity disappear) Carboniferous (359 299 ma) & permian (299 245 ma) Period of ime, where plants start their diversiicaion. Animals and plants result in one coninental land. Mass so much similarity on early plant species. Photosyntheic apparatus up above them, root below them. Brand new connecive issue to support and hold everything together. *nothing can break down the lignin in plants at that period of ime result in carbon reserves carboniferous. True leaves, chloroplast dna inversion (true leaves replacing thallus) Leave: a piece of plant issue 100% dedicated for capturing light energy for. Photosynthesis, connected with the new vascular system (trachieds and sieve), *able to have a large photosyntheic surface to support the plant. *chloroplast dna inversion: no efect, but can tell the descendent of the inverted group of plants.

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Please help me I am stuck on my last question

You are the lucky student of a wacky professor who develops a time machine. He asks if you will test it with him. You get in and there is an immediate glitchâthe date readout fails so that when you land you are not sure what era you are in. As your time machine lands, you see an unusual landscape before you. As you open the door you realize you cannot breathe. You quickly shut the door, realizing you are in the _____.

1)	Archaean eon

2)	Cambrian period

3)	Cenozoic era

4)	Mesozoic era

violetoyster507

i) One of the causes of speciation is genetic isolation. Why isgenetic isolation important?

ii) You are an evolutionary biologist studying a species ofbeetle. You notice that over the last ten years, the colour ofthese beetles has begun to shift from primarily green to brown. Youbelieve it is related to the gradual change in climate, which hasresulted in a change of vegetation. Is this an example ofdirectional selection, diversifying selection, or stabilizingselection?

iii) Are the wings of bats and bees homologous characteristicsor do they represent homoplasy?

vi) Near the end of the Paleozoic era, a great mass extinctionknown as the Permian extinction occurred whereby 95% of all specieswere lost. Explain what may have happened to account for thisextinction.

v) Summarize the advantages and disadvantages in using fossilsfor the study of evolution.

lilacscorpion309

The Mesozoic era is nicknamed the Age of Reptiles and the Cenozoic era is nicknamed the Age of Mammals. What do these nicknames mean?


Answers:	They indicate that the two eras are about the same length, because one lineage dominates the fauna of Earth only for a set period of time.
	They identify the time of greatest diversity of these groups in the fossil record.
	They identify the point of origin of these groups in the fossil record.
	Both A and C are true.
	Both B and C are true.

pearcrab948

BIO 1130 Study Guide - Midterm Guide: Phanerozoic, Paleozoic, Carboniferous

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