Show:
Chordates
Fish
Amphibians
Reptiles
Vocabulary
100
In humans, they disappear before birth.
What are gill slits or pharayngeal slits?
100
Most fish reproduce this way.
What is external fertilization?
100
Amphibians begin life in water, adulthood on land and this is where they reproduce.
What is in the water?
100
This is a land turtle?
What is a tortoise?
100
An internal gas-filled sac that helps the fish stay stable at different depths in the water.
What is a swim bladder?
200
Formed by bones called vertebra.
What is a backbone or spine?
200
Have this type of circulatory system.
What is a closed system?
200
Have this many chambers in their hearts.
What is 3?
200
These are ancestors of reptiles.
What are dinosaurs?
200
A flexible rod that supports a chordate's back.
What is notochord?
300
Three vertebrates that are ectotherms?
What are fish, amphibians, and reptiles?
300
This is located inside the swim bladder.
What is gas?
300
Obtain oxygen this way
What are lungs and thin, moist skin?
300
3 ways in which reptiles conserve water
What are kidneys, amniotic egg, and dry, tough skin with scales? Their kidneys excrete waste in a watery fluid called urine.
300
Are found mostly in sedimentary rock.
What is a fossil?
400
Give 3 benefits of an endoskeleton.
What is 1. protects internal organs 2. gives body its shape 3. does not need to be replaced 4. location for muscle attachment 5. allows greater growth
400
This is the path followed by blood after it leaves a fish's heart.
What is heart to gills to rest of body back to heart?
400
This is why amphibians are particularly sensitive to changes in the environment.
What is their skin is delicate?
400
This is how turtles obtain food.
What is a sharp-edged beak to tear food?
400
A tissue that is more flexible than bone.
What is cartilage?
500
These are 3 characteristics that at some point in their life cycle all chordates have.
What is a notochord, slits, and a backbone?
500
These are the 3 groups of fish and 1 example of each.
What is 1. jawless fish-hagfish and lamprey 2. cartilaginous fish-sharks, skates, rays 3. bony fish-most all fish
500
This is the path of blood in one loop 1. heart 2. gills 3. ??? 4. back to heart
What is the rest of the body?
500
Snakes move by contracting bands of ___________ connected to their ribs and backbone.
What are muscles?
500
The lower heart chamber that pumps blood out to the lungs and body.
What is the ventricle?