PBIO 1210 Study Guide - Midterm Guide: Anemophily, Nectar Robbing, Plant Reproductive Morphology
11 Dec 2016
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The linnaean system: every species has a unique name, all names follow a 2 word (binomial) convention, generic name (noun, specific epithet (adj. , names are in latin, not changing, universally known. Plant libraries stored in herbaria as dried, pressed plants. Q: which types of structures do you think would be most useful for classifying species: leaves, roots, flowers, stems. Theophrastus (father of botany) and the origin of classification. Problem was that these groups didn"t always reflect relatedness. There are related plants with dissimilar leaves. More strongly influenced by fit to habitat than relatedness. Adapted to similar changes (drought, shade, etc. ) Reproductive characters are more stable/reliable because changes could. Evolution and classification impair ability to leave offspring. Cladistics: classification based on shared, derived characters (synapomorphies) Clade: group of related organisms defined by at least one synapomorphy. Monophyletic: indicates that all are derived from a common ancestor. Can be based on dna, biochemical compounds, morphology, etc.
