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A section in the Vertebrate Study Guide

What are some defining characteristics for mammals? Hair or fur, birth to live young, mammary glands for sweat & oils & milk, lungs, 4 appendages, warm-blooded; 3 inner ear bones
What must mothers do for their mammalian young? What is the part called involved in this? Nurse their young mammary glands.
What do mammals use to breathe? lungs
Where can mammals live? land
Are mammals ectotherms or endotherms? endotherms
How many chambers do mammalian hearts have? 4
What is covering the skin and what is its purpose? hair that insulates the body from cold, heat, wind, water
What are modified forms of hair? “Wool, spines, quills, and certain horns are modified hair.”
What is a carnivore? Only eats meat
What is an herbivore? Only eats plants
What is an omnivore? Eats plants and animals
How are jaws and teeth adapted? According to their specialized diets. Know canines, incisors, molars
What are the 3 types of mammals? Monotremes, Marsupials, Placentals
Describe monotremes. Examples? Lay eggs with leathery shell. Mammary glands not concentrated, all over the body. Duck-billed Platypus
Describe marsupials. Examples? Born not fully developed. Young attach themselves to mammary glands to fully develop. Pouch. Kangaroo, koalas
Describe placentals. Examples? Largest group of mammals. Humans, cats, whales
What is the gestation period? Development from fertilization to birth
What is exchanged through the umbilical cord? Food, oxygen are exchanged through the umbilical cord
*Pick a beak you feel is most advantageous! Swiss Army Knife because they are multipurpose
Created by: GwendolynetheOC
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