Explain how vertebrates are distinguished from invertebrates.

You decide that the organism is a therian rather than a monotreme. How do you know based on its morphology/anatomy?

4. Below are some vestigial structures found in humans. For each, hypothesize what its function may havebeen. Structure Possible function? Wisdom teeth Appendix Muscles for moving the ear Body hair Little toe Tailbone

1. Compare and contrast the efficiency of the different organ systems and adaptations between cnidarians and ctenophorans. Which is more efficient overall and why? 2. What are the major adaptations and characteristics present in free-living flatworms that are absent in their parasitic counterparts? Discuss how these characteristics support their lifestyles.

Zoology Name the designated structure & class of the animal.

Part 3: Explain how protostomes are distinguished from deuterostomes.

Part A Which of the following statements regarding the diversification of animals is supported by the current available evidence? sponges are a paraphyletic group of organisms ctenophores are basal metazoans most animals belong to the clade Bilateria animals descended from multiple ancestors Submit Provide Feedback Request Answer

Compare the body of a flatworm tha a sponge and jellyfish. How are they similar and how are they different?

What are the structures and functions of animals?

Advantages and disadvantages of each type of body plan of animals?