Tuesday: More Plants!

Test Corrections are due Tuesday, April 12th (right after break)

1. We took our second Vocabulary Quiz today.  If you missed this quiz you must make it up as soon as you return.
2. In pairs you completed the four plant life cycle diagrams which we then went through together in class.
3. We then turned our focus back to the Ch. 29 Reading Guide and the Plant Diversity table.  We recorded that

•  The bryophytes are the only plant group that has a dominant gametophyte stage; the others have a dominant sporophyte stage. 
• Sporophytes are dependent on the gametophyte only in the bryophyte group (although both Lycophytes and Pterophytes have dependent sporophytes at the earliest stages, they then become fully independent). 
• The sporophyte and gametophyte are independent structures in Lycophytes and Pterophytes.
• Gametophytes are dependent on the sporophyte (in fact they are fully internal to it!) in Gymnosperms and Angiosperms.

4.  At the very end of class we began discussing the evolutionary advancements made as we compared different groups of plants, moving from Charophyceans (protist ancestor) to Bryophytes, to Lycophytes, to Pterophytes, to Gymnosperms, to Angiosperms.  We will complete this conversation tomorrow.