1. Cephalization is associated with: a. Metamorphosis b. Radial Symmetry c. Bilateral Symmetry d. Segmentation (Metamerism)...
1. Cephalization is associated with: a. Metamorphosis b. Radial Symmetry c. Bilateral Symmetry d. Segmentation (Metamerism) e. A complete digestive tract 2. One of the most unusual features of members of the phylum Rotifera not found in most animals is: a. They have a one-way digestive tract b. They can reproduce parthenogenetically c. They are triploblastic d. During development, the blastopore becomes the mouth e. All of the above are unusual features not typically found in any other animals 3. Corals living on the Great Barrier Reef undergo mass spawning during the month of November each year. Hybridization between the different species does not occur because sperm from one species cannot fertilize eggs from other species. This is an example of: A postzygotic isolating mechanism A prezygotic isolating mechanism Allopolyploidy The Ecological Species Concept Temporal Isolating Mechanism e. 4. The hybrid offspring of Xiphophorus fish show no effect of hybridization in the F1 generation, but the F2 generation develops melanoma (skin cancer) when exposed to UV light. This was used in class as an example of a. Autopolyploidy Allopolyploidy Hybrid Inviability Hybrid Sterility Hybrid Breakdown