Exercise 1 Symmetry in Nature and Observing Porifera

Part 1: Symmetry in Nature

1. Draw the lines of symmetry on each organism in Photos 1-5.

Note: The photo panels and data tables can be found in the Data tab. To access, select the “Data” box in the lower right-hand corner of the screen.

2.For each organism, list the type of symmetry it has in Table 1.

Part 2: Observing Porifera

3.Watch the two sponge animation videos linked here to get a better understanding of the internal anatomy of a sponge.

4.Watch the video “Sponges: Filter Feeding Made Visible.” While watching this video, closely observe the sponge being featured, species Neofibularia nolitangere. As you watch the video, draw the sponge to the best of your ability, and label all anatomical features you can. Try to be as detailed as possible, and refer back to the animation videos, your textbook, or an online resource if need be. Upload a picture of your drawing into Photo 6.