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- Describe the differences in both ingestion and digestion in cnidarians, like jellies, and an earthworm. (Complete vs. incomplete, type of body cavity, structures involved)Crustaceans, like annelids, are segmented animals. But crustaceans unlike annelids have tagmata. What are some advantages and disadvantages to this type of segmentation in comparison to annelids?What is the biggest, most obvious difference between the body structure of these two fish?
- Crustaceans, like annelids, are segmented animals. But crustaceans unlike annelids have tagmata. What are two advantages and two disadvantages to this type of segmentation in comparison to annelids?Which organs or respiratory adaptations do aquatic and terrestrial arthropods respectively present?What is the type of digestive system present in beings of the phylum Arthropoda? Are these animals protostomes or deuterostomes?
- What are advantages and disadvantages of asymmetrical body plan in animals?Label the external anatomy of a typical bony fish belowWhere are most of the internal organs located in an earthworm? a). along the dorsal surface b). along the ventral surface c). at the posterior end d). at the anterior end e). through the length of the longitudinal axis
- Spider Compare the spider to the clam and earthworm. What are the functions of the structures inside the spider? How are the internal contents of the cephalothorax compare to those of the abdomen? What is the ecological and economic importance of spiders?1. How many swimmerets does your crayfish have? 2. How many rows of gills does the crayfish have? 3. Where do the gills attach? 4. What does the stomach attach to directly? 5. Try to locate the green glands. What is the function of this structure?How does digestion in beings of the phylum Annelida work and which type of digestive system do they have?