Campbell Essential Biology with Physiology (6th Edition)
Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 17, Problem 13PS
Summary Introduction

To determine: The taxonomic groups that the vegetarians avoid eating and generalize about their diet. To determine: The consideration of the “meat “by those vegetarians, do they avoid eating vertebrates or eat invertebrates, whether they avoid only birds and mammals, do they eat fish, or eat dairy products or eggs.

Introduction: The humans are included in the group of omnivorous animals. They consume varieties of food including both the plant species and animal species. The animals that consume food of both the origin (plants and animals) are called omnivorous animals.

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Describe the main difference between the planarian and vertebrate digestive systems.   Question 13 options:   The planarian does not have digestive system.   The planarian digestive system is a branching gut sac that only has one opening to the environment.   The planarian digestive system has a body opening to the environment on both of its ends, but a vertebrate digestive system does not.   The vertebrate digestive system does not have as many highly specialized organs as that of vertebrates.
Ungulates Ungulates, such as deer, reindeer, and elk, are hoofed mammals. These animals have keen hearing, clear vision, supple, well-conditioned muscles, and razor sharp reflexes. The evolution of the four-chambered stomach in ungulates developed as a result of a need to eat quickly in the open and chew later in the safety of cover. This process is called ruminating or "chewing the cud." In other words, ungulates regurgitate and then re- chew their food. Which of the following would be considered a physiological adaptation of ungulates? A) their four-chambered stomach B) their long legs, which help them outrun predators C) their ability to stand perfectly still, which helps them avoid predators D) their ability to hibernate to avoid cold winters
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!)
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