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Review for Lab Quiz 1

Review for Lab Quiz 1. BIO 201: Botany. Lab 1 - Taxonomic Keys. Typically use the dichotomous format Two parallel statements Make a choice of one over the other With six petals ….. With eight petals ….. Leads to another set of paired statements. Example Taxonomic Key to Shrubs.

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Review for Lab Quiz 1

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  1. Review for Lab Quiz 1 BIO 201: Botany

  2. Lab 1 - Taxonomic Keys Typically use the dichotomous format • Two parallel statements • Make a choice of one over the otherWith six petals …..With eight petals ….. • Leads to another set of paired statements

  3. Example Taxonomic Key to Shrubs 1. Leaves scale like, very small (1-2 mm wide) . . . . . . . . Juniper 1. Leaves large (10 mm or more wide) and flat . . . . . . . . . . . . . 2 2. Leaves alternate on stems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Leaves opposite on stems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Leaf margins with thorns . . . . . . . . . . . . . . . . . . . . . . . . . Holly 3. Leaf margins smooth . . . . . . . . . . . . . . . . . . . . . . Crape Myrtle 4. Leaf surface waxy, smooth . . . . . . . . . . . . . . . . . . . . . Aucuba 4. Leaf surface hairy . . . . . . . . . . . . . . . . . . . . . . . . Beauty Berry

  4. 1 - Taxonomic Keys • Need to know your audience* use terms they will know • Don’t use relative terms* large, small • Use absolute terms* 10-15 cm long

  5. Getting started • Look at what you have and notice differences* write down 3-5 features that vary • Group similar things together • Think of ways to split object into two groups(groups do not need to be of equal size) • Split remaining objects into two groups again • Start key with a diagrammatic flow chart

  6. 2 - Angiosperm Reproduction • Reproductive structure = flower- sepals- petals- stamen- carpel

  7. Anther development

  8. Anther development

  9. Pollen tubes

  10. Ovary

  11. Ovary

  12. Seeds

  13. Seeds

  14. Lab 3 - Fruits • General fruit names - four categories • Number ovaries/flowers (single, aggregate, multiple) • Parts other than ovary (simple, accessory) • Fleshiness (fleshy, dry) • Dehiscence (dehiscent, indehiscent)

  15. Fruits • Each fruit then grouped by it’s four words.

  16. Fruits

  17. Fruits • Also categorize by specific fruit name (usually 1-2 words)Examples:capsule, nut, berry, false berry, legume

  18. Fruit components • Pericarp, seed, endosperm, embryo

  19. Lab 4 - Algae • Morphological forms:unicellular, filamentous, colonial, thallose

  20. Ectocarpus • Division • Growth form

  21. Spirogyra - vegetative • Filamentous • Chloroplast • Cell wall • Pyrenoid

  22. Spirogyra – conjugation • Gamete type • Life cycle • Dark greencircles • Connectionbetween cells

  23. Fucus • Division • Growth form • Oval structures

  24. Fucus reproduction • Sphericaltips?

  25. Fucus reproduction • Male vs female?

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