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Biology 2 - PPT - 03

🧬📗1️⃣ Module 4 - POWERPOINT SLIDES - SET 3

QuestionAnswer
What is an incomplete digestive tract? A digestive system with one opening for both ingestion and waste.
What is a complete digestive tract? A system with separate mouth and anus.
What is ingestion? Taking in food or substances into the body.
What are herbivores? Animals that eat plants exclusively.
What are carnivores? Animals that eat other animals.
What are omnivores? Animals that eat both plants and animals.
How does dentition differ in herbivores? Incisors for clipping and molars for grinding.
How does dentition differ in carnivores? Sharp incisors, large canines, slicing molars.
How does dentition differ in omnivores? Mixed dentition for both plant and animal diets.
Why do birds lack teeth? They grind food in the gizzard.
What is the gizzard? A muscular organ that pulverizes food using grit.
What is mechanical digestion? Physical breakdown of food by chewing and grinding.
What is partial chemical digestion? Saliva and amylase begin chemical breakdown in the mouth.
What is chemical digestion? Enzyme-mediated hydrolysis of food molecules.
Where does most chemical digestion occur? In the stomach and small intestine.
Where does most nutrient absorption occur? In the small intestine.
What is elimination? Removal of undigested material as feces.
What is a monogastric digestive system? A single-chambered stomach system found in humans and dogs.
What is a ruminant digestive system? A four-chambered stomach system for foregut fermentation.
What are the four chambers of a ruminant stomach? Rumen, reticulum, omasum, abomasum.
What is the function of the rumen? Microbial fermentation of fibrous plant material.
What is a nonruminant herbivore digestive system? Single stomach with enlarged cecum and colon for hindgut fermentation.
What are volatile fatty acids? Energy molecules produced by microbial fermentation.
What is the avian digestive system? A bird digestive system with crop, proventriculus, gizzard, and cloaca.
What is the crop? A storage pouch for food before digestion.
What is the proventriculus? The glandular stomach of birds that secretes enzymes.
What is the cloaca? A chamber where digestive, urinary, and reproductive systems empty.
Created by: francisslavin002
 

 



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