IF YOU MISSED CLASS ON 10/14

IF YOU MISSED CLASS ON 10/14
October 14, 2009
Mr. Ong’s B2-B4. Please me nice to Ms. Freeman. Watch the video and answer the following questions. Please stay on task because this assignment is worth 50 points. It is due the next time we meet (so please finish it up as homework if necessary). For Zoology: Work on your stem cell paper over the break! If you don’t know about the stem cell paper, you can find a blue paper at the front or go to my blog. For Biology: For homework, define: symbiosis, mutualism, commensalism, and parasitism (use our online book or the Internet). Find 3 examples of each (so there will be a total of 12 examples). Remember spelling and grammar is important! Use complete sentences. It is due the next time we meet. This assignment is worth 60 points.

IF ABSENT SPEND 1 HOUR AT http://www.pbs.org/kcet/shapeoflife/episodes/origins.html AND ITS ASSOCIATED LINKS TO ANSWER THE FOLLOWING QUESTIONS OR SPEND ONE HOUR DESIGNING AN EXPERIMENT FOR THE UPCOMING DISTRICT SCIENCE FAIR.
Mr. Ong
Episode 1:“Origins”(Sponges)
1) What was the first animal group?
What is the evidence for this
c o n c l u s i o n ?








2) How long ago did the first animal
appear on Earth?



3) How are scientists currently defining
the group called “animal”?




4) Should protozoans be considered
animals? Why or why not?








5) What does “multicellular” mean?
What is meant by “specialized” cells?









6) What do sponges eat?






1) What do you think the first animal
looked like?






2) How do you think that first animal
differed from today’s representatives?








3) Why do you think there would even
have been a first animal?








4) What do you think “evolution”
means?








5) What were the little organisms
that were flying along the sponge
tunnels? Learn more about
them by first exploring what
“plankton” means.








5.5) Please be skeptical and question at least two of the conclusions or inferences that were made in this video. How would you debate with the scientists or the videomakers? Write at least 8 good sentences.











6) How have relationships between
animal groups been determined
in the past? How is molecular
and genetic research influencing
our classification of animals into
related groups?