Kingdom Animalia Flashcards

(53 cards)

1
Q

Phylum Porifera

A
Sponges
Invertebrate
Asymmetrical
Lack true tissue/organs
Sessile.
Support: spicules, spongin
Osculum = opening for filtration
Spongocoel (central cavity) with choanocytes = pull in H2O for food collection
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2
Q

Phylum Cnidaria

A
Diploblastic
Radial symmetry
Gastrovascular cavity (food digestion)
No gills
Cnidocytes with nematocysts
Three classes: Hydrozoa, Scyphozoa and Anthozoa
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3
Q

Cnidocytes

A

Stinging cells containing nematocysts

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4
Q

Nematocysts

A

Stinging organelles

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5
Q

Class Hydrozoa

A

Polyps and medusae
Marine and freshwater
Hydra
Portuguese man-o-war (Physalia physalis)

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6
Q

Class Scyphozoa

A

True jellies
medusa stage only
marine and fresh water
moon jelly (Aurelia aurita)

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7
Q

Class Anthozoa

A

Corals
Sea anemones
marine only
polyp stage only

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8
Q

Phylum Ctenophora

A
Comb jellies
Invertebrate
Diploblastic
Biradial symmetry
8 rows of comb like plates (cilia)
Planktonic
Marine, predatory, simple nervous system, no nematocysts (but can steal them)
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9
Q

Phylum Platyhelminthes

A
Flatworms
Three Classes: Trematoda, Cestoda and Turbellaria
Invertebrate
Triploblastic
Bilateral
Acoelomate 
Protostome
One digestive opening (incomplete digestive tract)
No respiratory system
Free-living or parasitic
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10
Q

Class Trematoda

A

Flukes
Parasitic
Complex life cycles (multiple hosts)

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11
Q

Class Cestoda

A

Tapeworms

Intestinal parasites with proglottids and scolex

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12
Q

Class Turbellaria

A
Flatworms (Degusia)
Freshwater and marine
Moist environments
Planaria
2 eyespots and 2 auricles
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13
Q

Phylum Rotifera

A
Rotifers
Invertebrate
Triploblastic
Bilateral
Pseudocoelomate
Protostome
Freshwater, marine, interstitial
Complete digestive tract
4 regions: head, neck, trunk, foot
Corona: draws water in for feeding
Cryptobiosis: survive long periods in unfavorable conditions
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14
Q

Phylum Nemotoda

A
Nematodes, roundworms (Ascaris)
Invertebrate
Triploblastic
Bilateral
Pseudocoelomate
Protostome
Free-living and parasitic
Complete digestive tract
Cuticle
Lateral line
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15
Q

Phylum Mollusca

A
2nd largest phylum
Most complex phylum
Four classes: Polyplacophora, Gastropoda, Bivalvia, Cephalopoda
Invertebrate
Triploblastic
Bilateral
Eucoelomate
Protostome
Usually well developed head
Some with advanced vision
Complete digestive tract
Radula (scraping)
All have: foot, shell, mantle, visceral mass
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16
Q

Class Polyplacophora

A

Chitons
8 plates on shell
Curl into ball

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17
Q

Class Gastropoda

A

Snails, slugs, etc
Most abundant
Torsion during development
Operculum (protection)

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18
Q

Class Bivalvia

A

Oysters, mussles, clams, etc
Hinged shell (umbo)
Siphons
No radula

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19
Q

Class Cephalopoda

A
Nautilus, cuttlefish, squid, octopus
Most advanced
Tentacles
Most lack external shells
Well developed nervous system with large brain
Advanced vision
Beaks
Closed circulatory system
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20
Q

Phylum Annelidia

A
Earthworms
Two Classes: Oligochaeta and Polychaeta
Invertebrate
Bilateral
Eucoelomate
Protostome
Segmented
Setae/parapodia
Closed circulatory system
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21
Q

Class Oligochaeta

A

Earthworms (Lumbricus)
No parapodia
Few setae
Marine, terrestrial, freshwater

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22
Q

Class Polychaeta

A

Polychaetes, clam worms (Nereis)
Most abundant annelids
Mostly marine
Free-living or tube-dwelling

23
Q

Phylum Arthropoda

A

Largest phylum (1 million known species, mostly insects)
Invertebrates
Triploblastic
Bilateral
Protostomes
Found everywhere
All have: segmentation, an exoskeleton (protection, muscle attachment, prevent desiccation) and jointed appendages
Molting occurs
Cephalization with neural and respiratory development
Open circulatory system (hemolymph)

24
Q

Subphylum Trilobitomorpha

A

Phylum Arthropoda
Trilobites (extinct)
Possible ancestors to Subphylum Cheliceriformes

25
Subphylum Cheliceriformes
``` Phylum Arthropoda Chelicerae = feeding appendages 6 pairs of appendages Cephalothorax (head and thorax fused) Two Classes: Merostomata and Arachnida ```
26
Class Merostomata
``` Horseshoe crabs (Limulus) Marine Medically important Male/female dimorphism Book gills Telson = tail for steering ```
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Class Arachnida
``` Spiders, scorpions, ticks, mites, etc. One pair of chelicerae One pair of pedipalps Four pairs of legs Book lungs ```
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Subphylum Uniramia
``` Phylum Arthropoda Jaw-like mandibles One pair of antennae (sensory) One pair of compound eyes Unbranched appendages Three classes: Diplopoda, Chilopoda, Insecta ```
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Class Diplopoda
Millipedes Fused pairs of trunk segments Two paired appendages per segment
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Class Chilopoda
Centipedes One paired appendage per segment Flattened
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Class Insecta
``` Butterflies, moths, bees, flies, termites, etc. Largest class Wings Trachea system (gas exchange) Spiracles (prevent desiccation) Hemocoel Malpighian tubules (excretory) ```
32
Subphylum Crustacea
``` Phylum Arthropoda Crabs, lobsters, shrimp, barnacles, copepods, etc Most are marine Three or more paired appendages Biramous (claws) Two pairs of antennae ```
33
Class Malacostraca
Subphylum Crustacea Crabs, lobsters, shrimp, etc 60% of crustaceans Tripartite (3 segments: head, thorax, abdomen)
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Phylum Echinodermata
Sea stars, brittle stars, sea cucumbers, sea lilies, sea urchins, sea biscuits, etc Invertebrates Triploblastic Pentaradial symmetry as adults; bilateral as larvae Eucoelomate Deuterostomes
35
Class Asteroidea
``` Phylum Echinodermata Sea stars Gonads and digestive tracts in arms Regeneration Oral and aboral surfaces Dermal branchiae and pedicellariae (removal of debris from body) Water vascular system Madresporite (water intake) Tube feet ```
36
Phylum Chordata
``` 42,000 Known species HIghest diversity is coral reefs of south pacific and equatorial rain forests All share 5 characteristics: 1. Notochord 2. Post-anal tail 3. Pharyngeal gill pouches 4. Dorsal, hollow nerve chord 5. Endostyle/thyroid ```
37
Subphylum Hemichordata
Phylum Chordata Acorn worms Only possess pharyngeal gill slits
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Subphylum Urochordata
Phylum Chordata Tunicates, sea squirts Larval form = all characteristics Adults = gill slits and endostyle
39
Subphylum Cephalochordata
Phylum Chordata Amphioxus All characteristics throughout life Paedomorphic: larva reaches sexual maturity
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Subphylum Vertebrata
``` Phylum Chordata Cephalization Endoskeleton (segmented): protects nerve cord. Cartilage or bone 2 pairs of jointed appendages (exception: snakes and some amphibians) Outer protective tissue Pisces: all fish=like groups Tetrapods: terrestrial groups Agnathans: jawless Gnathostomes: jawed ```
41
Class Agnatha
``` Subphylum Vertebrata About 75 species Lamprey = freshwater or marine Hagfish = marine All jawless with cartilaginous skeletons No paired fins Single nostril 2 chambered heart ```
42
Class Chondrichthyes
``` Subphylum Vertebrata About 800 Species Sharks, skates, rays Mostly marine Paired fins and nostrils Heterocercal tails Placoid scales Lateral line Males with claspers Types of birth: viviparous, ovoviviparous, oviparous ```
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Viviparous
Live birth
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Ovoviviparous
Egg hatched internally, followed by live birth
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Oviparous
Hatched from an egg
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Class Osteichthyes
Subphylum Vertebrata Largest vertebrate class: about 24,600 species Bony fishes Streamlined and fusimorm (large in middle) Covered with dermal scales (except eels) Lateral line Swim bladder
47
Class Amphibia
``` Subphylum Vertebrata 4300 species Frogs, toads, salamanders, newts, caecilians Reproduction dependent on water Metamorphosis 3 types of respiration: lungs, gills, skin 3 chambered heart Ectothermic ```
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Class Reptilia
``` Subphylum Vertebrata About 6700 species Turtles, crocodilians, lizards, dinosaurs = sort of Amniotic egg Ectothermic 3 or 4 chambered heart Protective, dry scales ```
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Class Aves
``` Subphylum Vertebrata About 8800 species Birds Evolved from dinosaurs Endothermic 4 chambered heart Air sacs for respiration Large cerebellum = flight modifications 3 feather types: Flight, down, filoplumes ```
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Class Mammalia
``` Subphylum Vertebrata All have: Body hair Mammary glands Live birth (except monotremes) with placental development Endothermy 4 chambered heart diaphragm ```
51
Subclass Monotremata
Class Mammalia Platypus, echidna Oviparous with cloaca
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Subclass Marsupiala
Class Mammalia Kangaroos Pouched mammals; young born undeveloped
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Subclass Eutheria
Class Mammalia Placental animals Young born fully developed