bio exam II study guide

bio exam II study guide - STUDY GUIDE EXAM II *gamete-...

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STUDY GUIDE EXAM II *gamete- sperm or egg *replicates: N N *reduces # of chromosomes Taxonomic Categories: Domain- 3: bacteria, archaea, eukarya Kingdom- 5: monera (bacteria), plantae, animalia, fungi, protista Phylum Class Order- ales Family- aceae Genus Species systematics- science of the classification and interpretation of biological diversity *scientific name= binomial genus + specific epithet Ex: Rosa multiflora capitalize lower case
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Red Algae  Plantae 1) chlorophyll B 2) starch in plastids 3) cellulose in cell wall *bacteria & archae don’t have nuclei
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Homoplasy 1) the structural similarity between two traits in two species without phyletic continuity 2) even though the traits are similar, the common ancestor of species A and B did not present the trait. 3) 2 different types of homoplasy: = convergence- the evolution of similar traits in response to similar adaptive pressures, but not to similar genes and developmental processes = reversal- instances of homoplasy in which a character appears, subsequently disappears, and later reappears along the descendants in one lineage. Bryophytes *mosses, liverworsts, horntails 1) lack vascular tissue 2) can’t grow very large b/c they have no strong supporting tissue to keep their bodies erect 3) must live in damp places b/c their rootlike rhizoids can’t penetrate deep into the soil to extract the moisture they need 4) photosynthetic parts above ground & the nonphotosynthetic parts below ground must be close 5) Mosses- male gametophyte produces flagellated sperm in the antheridia - the egg is in the archegonium - zygote grows into a new sporophyte and remains attached at the top of the female plant for nutrition since it is nonphotosynthetic - spores are formed in the capsule (sporangium) - foot = connects sporophyte to gametrophyte and transfers nutrients
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bio exam II study guide - STUDY GUIDE EXAM II *gamete-...

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