Phylum Chordata

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Chordata examples

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Like, a bunch of fish

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Chordata four characteristics

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Notochord

Dorsal hollow

Post anal tail

Pharyngeal gill slits

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Chordata; what comes together to form a spinal column. All chordata have this.

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Notochord

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Chordata : the three subphyla are

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Cephalochordata

Urochordata

Vertabrata

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Chordata : subphylums are cephalochordata, urochordata, and vertabrata. Which are invertabrate?

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Cephalochordata and urochordata

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Chordata : a weird animal that looks like a bag of plasma but has the four characteristics of chordata

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Tunicates

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Chordata : jawless fish : is the most ___ group

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Primitive

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Chordata : jawless fish : have a true head. Meaning they have

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Cephalization

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Chordata : jawless fish; attached to host. Predatory and parasitic. This is called

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Lamprey

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Chordata : jawless fish - example?

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Hagfish. Waits for organism to die

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Chordata : a jaw developes in

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Gnathostomes

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Chordata ; gnathostomes include ___ and bony fish

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Cartilaginous

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Chordata ; chondrichytes : include which organism?

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Sharks, Ray's, sting rays

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Chordata : chondrichytes : are made of cartilage or bone?

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Cartilage

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Chordata : chondrichytes : have a ___ system. Such as the ampullae of lorenzini and lateral line

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Sensory

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Chordata : chondrichytes: a sensory system that detects electrical and chemical signals through pores

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Ampullae of lorenzini

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Chordata : chondrichytes: sensory system that is a series of cells sensing pressure waves

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Lateral line

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Chordata : chondrichytes : roughly how many species?

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1000 and 800 shark species

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Chordata : osteichthyes : cartilage? Bone?

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Bony and no cartilage

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Chordata : osteichthyes : have a sac inside that inflates and deflates for boyouncy. This is called

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Swim bladder

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Chordata : osteichthyes : what are the two types?

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Ray finned fish and lobe finned fish

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Chordata : osteichthyes : Ray finned fish examples

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Trout, goldfish, catfish, tuna

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Chordata : osteichthyes : a type of fish that venterally orientated. Can walk on the bottom of the ocean.

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Lobe finned fish

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Chordata; osteichthyes : you start to see lungs develop in

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Lobe finned fish

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Chordata : osteichthyes: how many species?

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29000

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Chordata : amphibians : are possibly related to

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Lobe finned fish

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Chordata : amphibians: have four developed limbs meaning that they are

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Tetrapods

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Chordata : amphibians : urodela is to

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Salamandera

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Chordata : anura is to

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Frogs and toads

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Chordata : amohibians : caeclilians are ___ they do respiration through ___

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Legless. Sometimes you find a stub or a little limb ; skin

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Chordata : amphibians : we see the development of ___ to keep the eye moist

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Eyelids

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Chordata : amphibians : we see the develoment of the ability to make ___

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Noise

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Chordata : amphibians : difference between fish?

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Bigger brain. went from 2 chamber heart to 3 chamber