Biology Question

• • Slide 1: Title Slide – include the name and # of the lab, your name, date, course info. Please also include a credited image of your favorite plant in the Bryophytes, Pteridiophytes or Gymnosperm groups … so many beautiful choices.
  • Slide 2: Bryophyta – please include labeled micrographs of
    • protonema – just a pic is fine
    • antheridium – can you identify the spermatogenous tissue inside the sterile jacket?
    • archegonium – label the egg cell and neck canal
    • capsule – loculus (spores), peristome, operculum
    • be sure to be able to differentiate gametophyte from sporophyte in Bryophyta
  • Slide 3: Hepatophyta (Marchantia) please include labeled micrographs of
    • gametophyte (thallus) – Gemmae cups and rhizoids
    • Antheridia – spermatogenous tissue
    • Archegonia – egg cell
  • Slide 4: Pteridophyta I please include labeled micrographs of
    • pics of live specimen showing leaves, stems, roots or rhizoids and sporangia.
    • micrograph of prepared Psilotum showing (basic: xylem, and phloem; or intermediate: xylem, phloem, epidermis, outer cortex, middle cortex, inner cortex, and endodermis)
  • Slide 5: Pteridophyta II please include labeled micrographs of fern antheridia and archegonia
  • Slide 6: Pinus I – leaf showing vascular bundle w/ xylem and phloem, mesophyl cells, air cells, epidermis, cuticle, and stomata
  • Slide 7: Pinus II – stems
    • young (primary) stem – primary xylem, primary phloem, procambium
    • older (secondary) stem – primary and secondary xylem and phloem, periderm, pith
  • Slide 8: Pinus III – cones
    • ovulate cone – megaphyll, ovule (megasporangium and megaspore mother cell)
    • staminate cone – microsporophyll, microsporangium, developing pollen
  • Slide 9: Pinus III – reproduction
    • pollen (male gametophyte) – generative cell and tube cell
    • archegonium (containing female megagametophyte) – egg, synergids, polar nucleus, antipodals
  • Slide 10: Reflection on Evolution
    • Speculate on why the fossil record shows that insect diversity entered an adaptive radiation (rapid diversification of a taxa into many different clades/species) quickly after the evolution of the angiosperms in the Cretaceous period.
    • Your friend tells you, “Mosses are stupid. Plants are way better.” How do you respond? (Thoughtful question posed by Dr. Brem. Followup from Dr. Marrs: Can you really consider this person a friend? Kidding)

Submit when done

This assignment will be reviewed according to the rubric posted with this assignment.

NOTE: Depending on how the semester goes, your TA may ask you to turn this in at the end of Week 15, OR at the end of Week 16. Please note the due date shown!!

Rubiric for Lab 17

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