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- 1. Multiple Choice
This structure is present in all embryos and may or may not be present in adults.
Notochord
Vertebrates
Metamorphosis
Gnatho
- 2. Multiple Choice
This is the structure for which the phylum Chordata was named.
Notochord
Vertebrates
Metamorphosis
Gnatho
- 3. Multiple Choice
This is a rod-like structure that forms the supporting axis of the embryo and gives birth to the vertebral column in vertebrates.
Notochord
Vertebrates
Metamorphosis
Exothermic
- 4. Multiple Choice
Chordates are sometimes referred to as this because most possess a backbone with a vertebrae.
Vertebrates
Invertebrates
Exothermic
Endothermic
- 5. Multiple Choice
Which organisms are in the class Agnatha?
Lampreys
frogs
snakes
birds
- 6. Multiple Choice
What is a characteristic of the class Agnatha?
do not have jaws
go through metamorphosis
can fly
have feathers
- 7. Multiple Choice
Which organisms are classified in the class Amphibia?
Birds
Fish
Snakes
Frogs
- 8. Multiple Choice
Which of the following is a characteristic of the class Amphibia?
do not have jaws
goes through metamorphosis
can fly
have feathers
- 9. Multiple Choice
This term refers to the ability of an organism to maintain their body temperature through external means such as the sun or water.
Exothermic
Endothermic
Vertebrates
Invertebrates
- 10. Multiple Choice
Which organisms are classified into the class Aves?
Fish
Birds
Frogs
Snakes
- 11. Multiple Choice
Which of the following is a characteristic of the class Aves?
they are endothermic
they do not have jaws
they go through metamorphosis
they are exothermic
- 12. Multiple Choice
This term refers to the ability of an organism to control their body temperature from within (which means they are warm blooded).
Endothermic
Exothermic
Vertebrates
Invertebrates
- 13. Multiple Choice
Which organisms are classified in the class Chondrichthyes?
Frogs
Birds
Sharks
Snakes
- 14. Multiple Choice
Which of the following is a characteristic of the class Chondrichthyes?
They have a cartilage skeleton (not bone)
they have a bone skeleton
they do not have jaws
they go through metamorphosis
- 15. Multiple Choice
Which organisms are classified into the class Mammalia?
Humans
Snakes
Birds
Sharks
- 16. Multiple Choice
Which of the following is a characteristic of the class Mammalia?
They have mammary glands to produce milk.
They go through metamorphosis.
They do not have jaws.
They can fly.
- 17. Multiple Choice
Which organisms are classified into the class Osteichthyes?
catfish
sharks
snakes
birds
- 18. Multiple Choice
Which of the following is a characteristic of the class Osteichthyes?
This is the largest class of chordates.
They can fly.
They go through metamorphosis.
They lack jaws.
- 19. Multiple Choice
Which organisms are classified into the class Reptilia?
Birds
Sharks
Snakes
Catfish
- 20. Multiple Choice
Which of the following is a characteristic of the class Reptilia?
They are endothermic (warm-blooded).
They are exothermic (cold-blooded).
They go through metamorphosis.
They are invertebrates.
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