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45 Cards in this Set

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Protostomes


determinate


spiral cleavage


blastopore forms mouth


list 3 examples


Mollusca


Arthropoda

Deuterostomes

indeterminate


radial cleavage


blastopore forms anus


list 2 examples

Echinodermata

Chordata

Phylum Echinodermata

10,000 species


deuterostomes


have tube feet


water vascular system


open circulatory system


dermal gills: absorb oxygen through skin



Phylum Echiodermata

Classes:


-Asteriodea (starfish/seastars) Asterias


-Ophiuroidea (brittle stars) Gorgonocephalus


-Echinoidea (sea urchins/sand dollars) Mellita


-Holothuroidea (sea cucumbers/sea slugs) Cucumaria




Class Asteriodea


Genus Asterias


starfish / sea stars


thick arms, tube feet with suckers


Pedicellaria remove algae from their skin


Class Ophiuroidea


Genus Gorgonocephalus


brittle stars


long thin arms


no suckers on tube feet


filter feeders


mouth but no anus


regeneration


have mutualistic bacteria protects them from infection

Class Echinoidea


Genus Mellita (sand dollar)


sea urchins and sand dollars


no arms


Aristotles lantern: sand dollar jaw area


sea urchins: longest lived animals (200yrs) and share 7000genes w humans

Class Holothuroidea


Genus: Cucumaria (sea cucumber)


no arms/spine


tubular body (5 rows of tube ft)


cuvier sticky feet protection


eviscerate themselves


respiratory tree near anus

Phylum Chordata

50,000 species


coelomate


deuterostomes




List 4 characteristics



1. notochord: long flexible rod bw the digestive system and nerve cord (in vertebrates this is replaced by vertebrae)


2. dorsal nerve cord: spinal cord and brain


3. pharyngeal gill slits: in embryo


4. tail that extends beyond anus: at least in embryo



Phylum Chordata

Subphylums:


-Cephalochordata (Brachiostoma)


-Urochordata (Molgula / Trididemnin)


-Vertebrata (classes: Agnatha, Chondrichthyes, Osteichthyes, Amphibia, Anura)



Phylum Chordata

Subphylum Cephalochordata


Genus Brachiostoma


Evolved 500million yrs ago


Invertebrates


common name: lancelets


no head or brain


thin, fish like


filter feeders


cilia and gill slits to move water


burrow tail first

Phylum Chordata

Subphylum Urochordata


Genus Molgula / Trididemnin


Invertebrates


common name: Tunicate / sea squirt


filter feeders


outer layer (tunic) made from carbohydrate tunicin


poisonous


hermaphrodite


simple heart pumps in both direction


trididemnin is the source of anticancer drug Didemnin





Phylum Chordata

Subphylum Vertebrata


Classes: Agnatha, Chondrichthyes, Osteichthyes, Amphibia, Anura


oldest fossil vertebrate (500 million yrs old)


50,000 species


cephalization (strong head) cranium


closed circulatory system


dioecious

Phylum Chordata

Subphylum Vertebrata


Class: Agnatha (jawless fish)


cartilage skeleton


no fins, long and eel like body, no jaw


fill ouches empty through pores (instead of slits)


Genus: Petromyzon (marine lamprey)


Genus: Myxine (hagfish) feed on dead or decaying fish. located by smell, produces slime to deter predators.



Phylum Chordata

Subphylum Vertebrata


Class: Chondrichthyes (cartilaginous fish)


have jaw and skeleton of cartilage


Sharks and rays


-paired fins for swimming


-oily liver gives them buoyancy


-hard skin with placoid (backwards) scales


-good sense organs: eyes, chemoreceptors, lateral line (detects water currents), can detect electrical field from buried prey


-internal fertilization


Genus: Torpedo (ray)

Phylum Chordata

Subphylum Vertebrata


Class: Osteichthyes (bony fish)


30,000 species {largest class of vertebrates}


hard bones


can move gill so they can breath while stationary


color vision


swim bladder: buoyancy


external fertilization


used for biomonitoring (detect toxins in water)


Genus: Bothus (flounder)



Phylum Chordata

Subphylum Vertebrata


Class: Osteichthyes (bony fish)




3 types of scales:


Ganoid: thick, not overlapping


Cycloid: thin, overlapping


Ctenoid: thin, overlapping with teeth to reduce drag

Phylum Chordata

Subphylum Vertebrata


Class: Amphibia


"two lives" tadpole then adult


external fertilization


first land vertebrates: fossils date back 350million yrs


tetrapod: 4 legs


gas exchange through skin and lungs


skin produces: magainins (antibiotics), fungicides, and toxins


Order: Anura (Frogs and toads)





Phylum Chordata

Subphylum Vertebrata


Class: Amphibia


Order: Anura (frogs and toads)


4 toes on front feet 5 on hind feet


Poison arrow (Dendrobates) brightly colored warning of toxicity.


Pipa: Pprotect eggs under skin of females back


Rhinoderma: males protect young in their vocal sacs


declining due to: habitat loss, predators, fungal infection





Phylum Chordata

Class Reptilia


lay eggs on land


internal fertiliztion


dry skin hardened w keratin (protein)


3 chambered heart (crocodilians have 4)


lungs use negative pressure


good sense organs: eyes , ears (detect vibrations) smell (Jacobsons organs in snakes)


pit vipers detect infrared (heat)





Phylum Chordata

Class Reptilia


skulls:


Anapsid (no temporal openings) turtles


Diapsid (two temporal openings) snakes





Phylum Chordata

Class Reptilia


turtles are endangered due to over harvesting


lizards due to increasing temperatures

Phylum Chordata

Class Reptilia


Orders:


Squamata (snakes)


Crocodilia (crocodiles and alligators)

Phylum Chordata

Class Reptilia


Order: Squamata (snakes)


less than 15% are venomous


streamlined body


sea snakes / boas are viviparous (give birth to live young)

Phylum Chordata

Class Reptilia


Order: Crocodilia (crocodiles and alligators)


4 chambered heart


most acidic stomach of any animal


Integumentary sense organs (ISO): detect pressure in water


Palatal valve: keeps water out of lungs when submerged


communicate using sound

Phylum Chordata

Class Aves (birds)


Evolved from reptiles 150million years ago


internal fertilization


diapsid skull ( 2 temporal openings)


feathers for flying and insulation


light weight: hollow bones, no teeth, reduced # of organs (one ovary)


4 chambered heart


endothermic (warm blooded)



Phylum Chordata

Class Mammalia


Subclasses:


-Prototheria (monotremes)


-Metatheria (marsupials)


-Eutheria (placental mammals) {5 orders of placental mammals}

Phylum Chordata

Class Mammalia


evolved 200 million yrs ago


endothermic


synapsid skull (one temporal opening)


internal fertilization

Phylum Chordata

Class Mammalia


Subclass Prototheria (monotremes)


lay eggs


feed young milk but have no mammary gland or breast


found in New Guinea and Australia


ex: Platypus

Phylum Chordata

Class Mammalia


Subclass Metatheria (marsupials)


give birth to underdeveloped young and raise them in a pouch (marsupium)


Genus Thylacine: evolved in southern hemisphere (Australia and S. America) but have spread to N. America (Genus: Didelphis [possum])

Phylum Chordata

Class Mammalia


Subclass Eutheria (placental mammals)


{5 orders of placental mammals}


Orders:


Carnivora


Cetacea


Chiroptera


Sirenia


Primates



Phylum Chordata

Class Mammalia


Subclass Eutheria (placental mammals)


Order Carnivora


carnivores


bears, cars, dogs, wolves


Genus Canis

Phylum Chordata

Class Mammalia


Subclass Eutheria (placental mammals)


Order Cetacea


whales, dolphins


Right Whales breed new Jacksonville


whales are either toothed or baleen (filter feed)


Genus Megaptera (humpback whale)

Phylum Chordata

Class Mammalia


Subclass Eutheria (placental mammals)


Order Chiroptera (bats)


feed on insects and fruit


echolocation


Genus Lasiurus (seminole)

Phylum Chordata

Class Mammalia


Subclass Eutheria (placental mammals)


Order Sirenia


slow moving aquatic herbivores


Genus Trichechus (manatee)



Phylum Chordata

Class Mammalia


Subclass Eutheria (placental mammals)


Order Primates


monkeys, apes, humans


oldest fossils about 60 million yrs ago


binocular vision: is vision in which creatures having two eyes use them together


opposable thumb: A thumb that can be placed opposite the fingers of the same hand.


large brain


one birth at a time



-Prosimians (oldest primates) (includes lemurs)



-American monkeys separated from African monkeys 40 million yrs ago




-Humans, chimps and gorillas separated 6 million yrs ago





humans



cloaca
in vertebrates, common chamber and outlet into which the intestinal, urinary, and genital tracts open. It is present in amphibians, reptiles, birds, elasmobranch fishes (such as sharks), and monotremes. A cloaca is not present in placental mammals or in most bony fishes.
how do echinoderms get oxygen?
through dermal cells
how old are the oldest fossil primates?
60 million years


What sense organs do crocodilians have to detect the waves of pressure caused by swimming fish?
ISO

Integumentary sense organs

Starfish have ___ symmetry, usually in ____parts
Starfish have radial symmetry, usually in 5 parts
give a genus name of cephalochordata
Brachiostoma (lancelets)
What is the name for the class of cartilaginous fish, such as sharks and rays?
Chrondrichtyes
The largest class of vertebrate is ___ with ____ species
The largest class of vertebrate is bony fish with 30,000 species
name 4 characteristics of chordates
1. notocord

2. dorsal nerve cord


3. pharyngeal gill slits


4. talk extends beyond anus

Gill pouches that empty through pours, not slits, are typical of___.
Agnatha
Name a genus of a marsupial mammal.
Didelphis
pedicellaria are found in ___.
echinoderms
The genus Trichechus is in the order ____ and subclass _____
Order Sirenia

Subclass Eutheria

What subclass of mammal lays eggs?
prototheria
What two areas of the world would you expect to find native marsupials?
S. America and Australia
Three types of scales
3 types of scales:

1. Ganoid: thick, not overlapping


2. Cycloid: thin, overlapping


3. Ctenoid: thin, overlapping with teeth to reduce drag

Which human was the first to use fire?
Homo erectus
2 types of skulls
Anapsid: no temporal openings

Diapsid: 2 temporal openings

birds and cartilaginous fish have what kind of fertilization?
internal


Whish anti cancer drug is extracted from tunicates?
Didemnin
The hagfish is in the class ___ and the genus ___.
class Agnatha

genus Myxine

true or false:

Swim bladders of bony fish evolved from the lungs in early fish.

true
The fishing in the Great Lakes was devastated by
lampreys
In what genus of frog, do the makes protect the young?
Rhinoderma