Don’t write anything yet…. The Bellwork is on your notes I’m going to hand out…..

Bellwork: Tues. April 26, 2016 Can you answer these questions on your notes handout? Kingdom in which all vertebrates are classified: _______________________ Phylum in which all vertebrates are classified: ________________________ Subphylum in which all vertebrates are classified: ________________________

ALL VERTEBRATES BELONG TO THESE CATEGORIES: KINGDOM ANIMALIA PHYLUM CHORDATA SUBPHYLUM VERTEBRATA

First, another invertebrate: https://www.youtube.com/watch?v=pJf-2h2VpbM Now the start of the vertebrates: https://www.youtube.com/watch?v=Lkbq9RpLVUE

Have a backbone bilateral symmetry coelomate animals that have endoskeleton closed circulatory system (veins, arteries) efficient respiratory system complex brain and nervous system

Fish: 3 types 1.Jawless (ex.-Lamprey, hagfish) 2.Cartlaginous Fishes(ex.-shark) 3.Bony Fishes(ex.-tuna, jack) Ectotherms- body temperature is dependent on the surroundings. 2 chambered heart Have gills

Lampreys, jawless fish closely related to the first vertebrates, possess 41 types of a little-known genetic regulator called microRNA. Some biologists say microRNA answers the mystery of how backbones evolved. Read More http://www.wired.com/science/disc overies/news/2008/02/micro_rna#i xzz0neSEF176

Amphibians: “DOUBLE-LIFE” Frogs, Toads, Salamanders. As adults, live on land, but rely on water for breeding and egg development. All go through metamorphosis, in which the young gradually lose their tails and gills and develop legs, lungs, and other adult structures. Ectotherms- body temperature is dependent on the surroundings. 3 chambered heart

caecilians type of amphibians that superficially resemble earthworms or snakes. They mostly live hidden in the ground, which makes them one of the least known orders of amphibians. All extant caecilians and their closest fossil relatives are grouped as the clade Apoda.

Reptiles snakes, lizards, turtles, crocodiles and alligators. Ectotherms- body temperature is dependent on the surroundings. Most have 3 chambered heart, but crocodiles have a 4 chambered heart. Have lungs scaly skin reduces loss of body moisture on land. Have amniotic egg- embryo in amniotic fluid. https://www.youtube.com/watch?v=Qv-ETrzgOj8

Birds Have feathers. Forelimbs modified into wings. Have amniotic egg- embryo in amniotic fluid. Incubate eggs in nests. Endotherms-animals that maintain a constant body temperature. Have thin hollow bones enabling flight. Have lungs. Air flows in one direction https://www.youtube.com/watch?v=2TJaNDBI87s

Mammals 3 Types of Mammals Humans, Dogs, Cats, Kangaroo etc. Endotherms-animals that maintain a constant body temperature. 4 chambered heart Have mammary glands Have lungs Have hair for insulation 3 Types of Mammals

3 Types of Mammals Monotremes- lay eggs (example- platypus) https://www.youtube.com/watch?v=K5Y2h5zjpWU Marsupials- young develop in pouch of mother.(example-kangaroo, koala) https://www.youtube.com/watch?v=2lCKc8tURtc Placental-carry young inside the uterus until development is nearly complete. (example-humans, dogs, cats)

Bellwork: Wed. May 11, 2011 Characteristics that birds and mammals share: 2. 3 major differences between birds and reptiles:

Bellwork: Wed. April 27, 2016 About Phylum Mollusca: 1. Octopuses and Squids are__________________ hint think “head foot” look in your notes! 2. Snails and slugs are__________________ hint think “stomach foot” look in your notes! Clams and scallops are_________________ hint think “two shells” look in your notes!

http://boingboing.net/2010/07/27/octopuses-octopi- oct.html

Baby kangaroo birth http://www.youtube.com/watch?v=IloOJ3kc8us&featu re=related