Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 32, Problem 4WIO

Biologists estimate that carnivores assimilate 90% of the mass in their diet; in contrast, most herbivores assimilate only 30% to 60% of their food . How do these differences in assimilation efficiency re late to the structure of their digestive systems?

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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!)
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?
Which of the following is true about digestion and digestive tracts? Check all that apply. Intracellular digestion is common amongst herbivores because cellulose needs to be broken down. Intracellular digestion is common amongst herbivores because cellulose needs to be broken down. Animals with an incomplete digestive tract have a body cavity with one opening.Animals with an incomplete digestive tract have a body cavity with one opening. Carnivores have more digestive organs than do herbivores due to the need to break down meat. Carnivores have more digestive organs than do herbivores due to the need to break down meat. An animal that eats more plants likely has a larger cecum than an animal that eats fewer plants.An animal that eats more plants likely has a larger cecum than an animal that eats fewer plants. Extracellular digestion occurs in cnidarians, annelids, and vertebrates.Extracellular digestion occurs in cnidarians, annelids, and vertebrates. Animals…
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