Title: Week 8 overview
Course: BIO-182 RTZ > Section: week 8 - Protostome Animals

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TO DO before [Date/Time selected here]:

- Read Chapter 32 (Protostome Animals)
- Complete: LaunchPad Learning Curve (Chapter 32)
- Complete: LaunchPad Learning Activities (Chapter 32)
- Review for and complete all three sections of Exam #2 (Chapters 25 - 29)
- Begin and maybe complete lab activity.
- Optional: LaunchPad Sumamry Quiz (Chapter 32)

This week we continue our examination of the transition to land by animals by looking at an overview of the Protostomes (Chapter 32). Protostomes are one of the two major clades of triploblastic animals. In this group, as the zygote/embryo develops, the embryonic blastopore, or first opening created during gastrulation of the animal embryo, becomes the mouth. Also, they are all bilaterally symmetrical animals who have an anterior brain surrounding the entrance tot he digestive tract and a ventral nervous system consisting of paired longitudinal nerve cords.

- The first section of this chapter (32.1) describes the traits of the protostomes in greater detail. Skim most of this section but focus on the first column on page 652, the phylogenetic tree on page 653, and the discussion about the ecdysozoans beginning on page 654. Skim the rest of this section.Be able to answer the questions in RECAP 32.1 (pg 656).
- The following section (32.2) describes the features of the lophotrochozoans in greater detail. We have looked at some of these organisms in lab already ( specifically the flatworms). Focus your attention on the readings pertaining to the Flatworms (pages 656 and 657), the annelids (page 659 - 660), and the mollusks (pages 662 - 664). Read these parts of the section carefully. Be sure you are able to answer the questions in RECAP 32.2 (pg 664).
- Section 32.3 describes the features the distinguish the major groups of ecdysozoans. Skim this section.
- Arthropods are the most successful group of animals on the planet. Section 32.4 tells you why. Read this section carefully and make sure you are able to answer the questions in the RECAP 32.4 on page 672. This group is the first to successfully colonize land, to sever the ties with water by carrying their water around with them. Pay special attention to the adaptations that allowed for this successful transition!

SUPPLEMENTAL MATERIAL:

- Dr. DiClonius  (50 second lecture on difference in early embryonic developement between deuterostomes and protostomes)

http://www.youtube.com/watch?v=8ULc9AWcmy4

- Bozeman Biology - animal development beginning around minute 4:00

http://www.youtube.com/watch?v=wd-QnKlfZHI

- JasonWalker Lecture (2012)

http://www.youtube.com/watch?v=xLTQufqnPNs

- In-depth tutorial

http://what-when-how.com/category/protostomes

INTERESTING ARTICLES:

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