CNİDÀRİA Daphnia & Hydra observations: 1.What type of cnidae do hydra have? Describe how they interact with prey. (1 point) Observe and describe a Hydra’s feeding behavior? (0.5 point) Describe how the Daphnia are transferred to the mouth and coelenteron. (0.5 point) Hydra Anatomy: 4 How many ovaries are present? (0.5 point) How many testes are present (0.5 point) Why might an individual have many testes but only one ovary? (1 point) 6 Cassiopeia video: 7. upwards, unlike most other jellies which swim with their oral side facing downwards? (1 point) Why do you think Cassiopeia typically lay on the bottom of the ocean with their oral side facing Preserved Anemones & Corals: Sketch the differences between the anemone and coral. Label on the drawings where you think their cnidae are located? (2 points) ANNELIDA Living Earthworms: Note the setae on each segment and describe how the worm moves. (1 point) 10. Which direction do the ends of the setae face on the animal? (0.5 point) 11. Make a sketch of the earthworm’s external reproductive parts, and label the features that are in bold font. (2 points) Nereis slides: 12. Describe, or quickly sketch, the parapodia and chaetae. (0.5 point) PLATYHELMINTHES Living Planaria: 13. Describe how the planarian moves. (0.5 point) 14. Where do the adhesive cells seem to be located? (0.5 point) 15. Observe how the planarian responds, and record your observations below. (1 point) Adult Tapeworm Observation: 16. How long do you estimate this specimen is? (0.5 point) Scolex slide: 17. Draw a picture of the scolex and label the features in bold. (1 point) Gravid Tapeworm Proglottids slide: 18. Roughly how many eggs are in each proglottid? (0.5 point) NEMATODA Ascaris dissection: 19. List two or three features of Ascaris that are possible adaptations to parasitic life. (This will be easier to answer after you dissect the worm). (1 point) Ascaris drawing: 20. Make a sketch of your dissection on a separate piece of paper, including and labeling the following parts (as appropriate in your specimen) (4 points): Mouth, intestine, anus, lateral lines (2) -Female specimen: Ovaries (2), oviducts (2), uterus, vagina, genital pore -Male specimen: Testis, seminal vesicle, copulatory spicules (2)