amphibians and reptiles chapter 18 section 2 6 th grade chapter 18 section 2 6 th grade
TRANSCRIPT
Amphibians and Reptiles
Chapter 18 Section 2
6th Grade
Do Now…
If fish were to live on land, what adaptations would they need to survive?
Do Now…
Complete another mealworm observation. Work on lab questions and draw a picture if possible.
Objectives
Students will…Describe how amphibians have adapted to live in water
and on landIdentify the adaptations that allow reptiles to live on land
Amphibians
Definition: animals that spend part of their lives in water and part on land
Origin of the word “amphibian”- from the Greek word amphibious which means “double life”
Examples: Frogs, Toads, Salamanders
Amphibian Adaptations (ectotherms)
HibernationCold climatesPeriod of inactivityBury themselves in
mud or leaves
Estivation Hot, dry climatesPeriod of inactivityBurrow underground
Amphibian Characteristics
Have endoskeletonsYoung have gills, adults have lungsHave 3 chambered heartsAdults exchange oxygen and carbon dioxide
through skinHave ear drums
Reptiles---Unique Characteristics pg. 538
TurtlesCrocodiles and
Alligators
Lizards Snakes
Reptiles
Reptile Adaptations pg. 539
Characteristic Purpose
Skin
Neck
Lungs
Internal Fertilization
Amniotic eggs
Videos
Reptiles and Amphibians part 1Reptiles and Amphibians part 2Reptiles and Amphibians part 3Reptiles and Amphibians part 4
For Next Time…
Read pgs. 535-539
Frog Metamorphosis and Reptiles and Amphibian Review
Chapter 18 Section 2
6th Grade
Do Now…
What is the difference between hibernation and estivation?
Objectives
Students will
Create a foldable to learn model the metamorphosis of an amphibian
Amphibian Metamorphosis (Frogs)
Create a foldable according to teacher instructions1) Eggs- are laid by adult amphibian in the water2) Young Larva-are dependent on water. They have no legs
and breathe through gills.3)Older Larva- body structures are developed that are
necessary for life on land including legs and lungs. 4) Adult- have lungs, legs, breathe through skin and can
reproduce. They require water for external reproduction.
Practice Worksheet
With your lab group—complete Reinforcement worksheet on Amphibians and Reptiles
For Next Time…
Read pgs. 541-544Define contour feather and down
feather on index cards.