Biology 204 - Study Questions (M. G. Simpson) Lectures 10: Green & Land Plants 1. What are two ways to answer the question: what is a plant? 2. What is the scientific name for the Green Plants? 3. What are the characteristics of the green plant chloroplast with respect to chlorophyll types, storage product, and membrane structure? 4. What is the major component of the green plant cell wall? 5. What is the chemical structure of this cell wall component? How does it differ from starch? 6. What is a microfibril? 7. Are the Green Algae a paraphyletic or monophyletic group? 8. Are "Green Algae" multicellular or unicellular? 9. What are the major differences between a haplontic, diplontic, and haplodiplontic life cycle? 10. What is oogamy and what was involved in its evolution? 11. What is the scientific name for the Land Plants? 12. Name an apomorphy of the Land Plants with respect to life cycle characteristics. 13. Draw the haplodiplontic life cycle, noting all structures and processes. 14. What is the ploidy level (n or 2n) of: gametophyte, sporangium, spore, sporophyte, archegonium, antheridium, egg, sperm, zygote, embryo. 15. Where does most cell growth occur in the Land Plants? 16. What is parenchyma? 17. What is the name of the protective layer on the outside of the epidermis that helps prevent water loss? 18. What is the name of the male gametangium of the Land Plants, what does it produce, and what is its function? 19. What is the name of the female gametangium of the Land Plants, what does it produce, and what is its function? 20. Name the 3 major groups of "bryophytes" (basal land plants) in phylogenetic order. 21. What are the two growth forms of the liverworts? 22. What do some liverworts have that function in gas exchange? 23. What are the asexual propagules of some liverworts called? 24. What apomorphy is possessed by all Land Plants, except for the liverworts? 25. What is the function of stomates? 26. What is the growth form of the gametophyte and sporophyte of Hornworts? 27. What is the growth form of the mosses? 28. What is the name of the filamentous, alga-like form of the moss gametophyte in its very early stage? 29. What reproductive structures are formed at the tips of moss gametophytes? 30. What is the name of the sporangium of a moss? 34. What does a sporangium produce and what process produces them? 35. How do the gametophytes and sporophytes of "bryophytes" differ with respect to longevity and nutrition. 36. Name the genus and common name of the most economically important moss. 37. What is distinctive about Sphagnum moss that enables it to absorb and retain water so well? 38. Sphagnum moss is a component of ___________ and acts to make the surroundings more ________. 39. What is peat? 40. What are the economic uses of peat?