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Vertebrate Diversity

Chapter 4 Lesson 5

TermDefinition
Cartilage A connective tissue that is more flexible than bone that protects the ends of bones and keeps them from rubbing together.
Mammary gland An organ in female mammals that produces milk for the mammal's young.
Monotreme A mammal that lays eggs.
Marsupial A mammal whose young are born at an early stage of development, and which continue to develop in a pouch on their mother's body.
Placental mammal A mammal that develops inside its mother's body until its body systems function independently.
Placenta An organ in most pregnant mammals, including humans, that links the mother and the developing embryo and allows for a passage of materials between them.
What are the five main groups of vertebrates? Fishes, amphibians, reptiles, birds, and mammals.
What are the characteristics of a fish? Lives in water, and use fins to move. Most are ectotherms. Have scales and use gills to obtain oxygen.
What are the characteristics of an amphibian? Ectothermic. Spends early life in water, and adult life on land.
What are the characteristics of a reptile? Ectothermic. Has scaly skin and lungs. Lays eggs on land.
What are the characteristics of a bird? Endothermic. Lays eggs. has four chambered heat. Most can fly. Lightweight. Bones are nearly hollow.
What are the characteristics of a mammal? Endothermic. Have skin covered in fur or hair. Has four chambered heart. Young are fed milk.
Created by: user-1915164
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