Unit four discussion questions Flashcards
The three types of fish and their characteristics
Cartilaginous fish- gristly/bony bodies, jawless fish- laphrys, bony fish- skeleton scales
How do fish get excess water from their bodies
Urine
How do fish reproduce
Eggs
What is a lateral line, and what is its purpose
It detects changes in water pressure
How do fish breathe under water
Fish swallow water, press it through the gills that suck the oxygen from the water
What are the three characteristics of amphibians
They are cold blooded, they start off in the water, they are the smallest group of vertebrates
What are the three main groups of amphibians
frogs\toads, newts\salamanders, caecilians
Four main reptile groups
Alligators/crocs Tortoise/turtles, snakes, lizard
What do some snakes and lizards do that most reptiles do not
Give birth to live young
What allow birds to be so good at flight
Feathers, hollow bones, strong breast muscles
What is the syrinx and what’s its purpose
it produces the birdsong
Two adaptions birds have for flight
Hollow bones, four chambered heart
Three groups of mammals
Marsupials, monotremes, placentals,
How do the three groups of mammals reproduce
Marsupials give birth to partially developed young, monotremes lay eggs, placentals give birth to fully developed young.
