Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Life Science
Animal and Biomes Basics Theme Unit
Five Kinds of Vertebrates

Life Science
Life Science


Five Kinds of Vertebrates
Print Five Kinds of Vertebrates Reading Comprehension with Sixth Grade Work

Print Five Kinds of Vertebrates Reading Comprehension


Reading Level
     edHelper's suggested reading level:   grades 6 to 8
     Flesch-Kincaid grade level:   6.89

Vocabulary
     challenging words:    chordates, endoskeletons, life-cycles, phylum, endothermic, characteristic, internal, hard-shelled, further, undergo, reproduce, covering, ectothermic, vertebrate, metamorphosis, efficient


Five Kinds of Vertebrates
By Cindy Grigg
  

1     Vertebrates are all animals that have a backbone. Vertebrates are in the phylum Chordata. Chordates (or vertebrates) have internal skeletons called endoskeletons made of bone or cartilage. They each have a nerve cord that runs down their backs, known as a central nervous system. They have specialized body systems for the jobs of digestion, circulation, and respiration. The Chordata phylum is further divided into five classes. These five classes are fish, amphibians, reptiles, birds, and mammals.
 
2     Fish (including sharks) make up the largest group of vertebrates. Nearly half of all vertebrates are fish. Fish have been swimming in Earth's water for more than five hundred million years- longer than any other kind of vertebrate has been on Earth. Fish are ectothermic animals, which means that they cannot control their body temperature internally. If they get cold, they move into warmer water. If they get too warm, they go into deeper water. We say they are "cold-blooded." Fish live in water. Fish have fins which are structures used for moving. Most fish get oxygen through gills and have scales as a body covering. Scales are thin, overlapping plates that cover the skin of fish. They are made of a hard substance like your fingernails. Fish have skeletons of bone or cartilage. Their circulatory system features a two-chambered heart. Most fish lay jelly-like eggs in water to reproduce.
 
3     Amphibians (frogs, toad, and salamanders) are also cold-blooded, ectothermic animals. Their name comes from a word that means "double life." This refers to their life cycle that is partly spent in the water, breathing with gills, and partly spent on land, breathing with lungs. Most amphibians lay jelly-like eggs in water. The larvae that hatch swim and have gills for breathing. As they undergo metamorphosis and become adults, most amphibians acquire lungs and lose their gills. Adult amphibians also get oxygen through their thin, moist skin. They do not have scales. Their circulatory system uses a three-chambered heart. Amphibians were the first vertebrates to live on land.

Paragraphs 4 to 6:
For the complete story with questions: click here for printable



Weekly Reading Books

          Create Weekly Reading Books

Prepare for an entire week at once!


Feedback on Five Kinds of Vertebrates
Leave your feedback on Five Kinds of Vertebrates  (use this link if you found an error in the story)



Life Science
             Life Science


Animal and Biomes Basics Theme Unit
             Animal and Biomes Basics Theme Unit


More Lessons
             Frog Activities, Worksheets, Printables, and Lesson Plans


Science
             Science


    Careers in Science  
 
    Caring for Earth  
 
    Clouds  
 
    Dinosaurs  
 
    Earth's Land  
 
    Earth  
 
    Earthquakes  
 
    Electricity  
 
    Energy  
 
    Erosion  
 
    Food Pyramid  
 
    Food Webs and Food Chain  
 
    Forces and Motion  
 
    Fossils  
 
    Health and Nutrition  
 
    How Things Work  
 
    Landforms  
 
    Life Science  
 
    Light  
 
    Magnets  
 
    Matter  
 
 
    Moon  
 
    Natural Disasters  
 
    Photosynthesis  
 
    Plant and Animal Cells  
 
    Plants  
 
    Rocks and Minerals  
 
    Science Process Skills  
 
    Scientific Notation  
 
    Seasons  
 
    Simple Machines  
 
    Soil  
 
    Solar System  
 
    Sound  
 
    Space and Stars  
 
    Sun  
 
    Tsunami  
 
    Volcanoes  
 
    Water Cycle  
 
    Water  
 
    Weather  
 



Copyright © 2017 edHelper