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- Nutrition and Digestion Identify the different modes of feeding mechanisms found in the Animal Kingdom, describe each and give 2 example animals for each mode. Why do Cnidarians, Flatworms and Protists have simple or no extensively developed digestive system? (clue: mention their digestive structure and their mode of feeding) What are the structural adaptations of snakes that allowed them to eat and digest a whole prey? Why do insects of one species have a changing diet requirement during their life history? Different birds have varying food habits, discuss the structural and physiological adaptations that allow them to process these foods. What are the four stages of the digestive process, describe each stage/step and indicate what are the products/substances produced and their fate? Discuss the role of the endocrine system in controlling digestion. (no plagiarism pls, thank u!)Discuss the processes involved in the digestion of food in vertebratesWhich of the following not only increases surface area for nutrient absorption, but also slows down passage of food through the digestive system to allow for a longer time for absorption? the glomerulus the endostyle the amphibian typhlosole the spiral valve the columella O the pneumatic duct
- What is the difference between pre-gastric and post-gastric fermenters? Give examples of animals that are herbivores but not ruminants. How is the degradation of fibrous feed materials being accomplished?Earthworms move through coordinated and peristaltic contractions of their body wall muscles. When the circular muscles within a segment contract... the coelom gains volume the segment gets narrower the segment gets shorter the worm moves backward the coelom reduces in volumeCompare the following animals in terms of their digestive tracts (centerpoint only needed in the graph (similarities))
- compare the scypha, hydra, dugesia to ascaris and earthworm Do you see a body cavity aside from the intestinal cavity? You may also look at dissected Ascaris and earthworm. Is there a mesentery that suspends the intestine from the body wall in these animals?Why is it important that fish rapidly eat their feed?Suspension feeding is one of the most important methods of feeding among animals. Explain the characteristics, advantages, and limitations of suspension feeding, and name three different groups of animals that are suspension feeders.