THE MOST EXTENSIVE PHYLUM IN THE ANIMAL KINGDOM
Phylum: Arthropoda
Spiders, ticks, scorpions,insects, crustaceans.
PHYLUM?
ARTHROPODA
NAME 6 CHARACTERISTICS IN COMMON WITH THE ANNELIDS
Bilateral symmetry External segmentation Nervous system (cephalization and dorsal brain) Three germ layers Organ systems Coelomic cavity
NAME 8 WAYS ARTHROPODS ARE DIFFERENT THAN ANNELIDS
Fixed number of segments in adults. Usually lack intersegmental septa. Segmented body divided into tagmata. Jointed appendages : often specialized.Coelomic cavity reduced; main body cavity is called the hemocoel and contains blood. Open circulatory system. Complex muscular system with striated muscles. Exoskeleton of cuticle containing chitin.
WHAT THE HELL IS TAGMATA AND WHO HAS IT?
ARTHROPODS. groups of fused segments that are specialized to perform a particular function 1)head, thorax, abdomen 2)cephalothorax, abdomen 3)head and trunk
NAME 3 JOINTED APPENDAGES OF ARTHROPODS
Chelicerae (ke-lis’-aray) anterior pr. of appendages with fangs connected to poison gland for defense and food gathering Pedipalps - have parts for chewing Walking legs - 4 pair for walking
LOCATE THE Chelicerae & Pedipalps
Phylum: Arthropoda
RESPIRATION
Body surface Book lungs : air pocketsGills Trachea (air tubes)
IN ARTHROPODA, Excretory glands are modified nephridium called
WHAT AND LOCATION?
coxal. open at 1st and 3rd walking legs.
malpighian tubules DRAIN INTO THE ----- -----
THAT REABSORB K+ & H20.
rectal glands
LABEL
Phylum: Arthropoda
REPRODUCTION
DIOECIOUS. SOME METAMORPHSIS.
WHEN A BUTTERFLY IS IN A COCOON, WHAT STAGE IS IT?
PUPAL OR CHRYSALIS STAGE
ANOTHER NAME FOR ECDYSIS
MOLTING OF EXOSKELETON.
BEES AND ANTS,
WHAT PHYLUM?
ARTHROPODS
MOST OF THE BUTTERFLY LIVE IS IN THE LARVAL STAGE.
True False
TRUE. Egg, larva, pupa, adult.
Trilobites probably had their beginnings before the ------ period, in which they flourished.
They have been extinct for ------- years.
CLASSIFICATION OF A SPIDER
PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDAORDER : ARANEAE
giant water scorpion
CLASSIFICATION
PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDA
Class: Arachnida
WHAT SUBPHYLUM?
Subphylum Chelicerata Ke-lis’e-ra’ta
Subphylum: Chelicerata
Class: Arachnida
ORDER: ARANEAE
ANATOMY?
2 tagmata =cephalothorax and abdomen
ONE of a pair of the most anterior head appendages on the members of the subphylum
Chelicerata, NAME IT.
They were among the first arthropods to move into terrestrial habitats.
Subphylum : ChelicerataClass : Arachnida
WHAT THE HELL IS A CEPHALOTHORAX AND WHO HAS IT?
fused head and thorax. PHYLUM ARTHROPOD Subphylum : ChelicerataClass : Arachnida
ARACHNID FEEDING PROCESS
Arachnids typically feed by releasing digestive enzymes over or into their prey and then sucking the predigested liquid.
IN ARACHNIDS, THE COXAL GLAND IS ALSO KNOWN AS A ....
AND OPENS AT WHAT SEGMENTS?
modified nephridia. opens at segments 1&3
SPIDER RESIPRATION
WHERE AND WHAT?
BLACK WIDOW VENOM IS WHAT TYPE?
NEUROTOXIN.
BROWN RECLUSE VENOM TYPE?
HEMOLYTIC.
Scorpions.
CLASSIFICATION.
PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDAORDER : Scorpiones
SOME SAY most ancient of terrestrial arthropods and comprise about 1400 species worldwide.
WHO
SCORPIONS. PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDAORDER : Scorpiones
CLASSIFICATION OF A HARVESTMAN SPIDER.
DADDY LONG LEGS. PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDAORDER : Opiliones
PHYLUM ARTHROPOD
Subphylum Chelicerata (Ke-lis’e-ra’ta)
CLASS: ARACHNIDA
ORDER : Opiliones
WHO?
DADDY LONG LEGS
THE ONE FEATURE THAT SPIDERS DON'T HAVE BUT Opiliones DO?
DADDY LONG LEGS Abdomen and cephalothorax widely joined and abdomen shows external segmentation – features that spiders do not have.
THE SISTE GROUP TO THE SCORPIONS IS?
THE ORDER OF Opiliones. DADDY LONG LEGS.
PHYLUM ARTHROPOD
Subphylum Chelicerata (Ke-lis’e-ra’ta)
CLASS: ARACHNIDA
ORDER : ACARI
WHO?
TICKS & MITES
TICKS & MITES
CLASSIFIFCATION
PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDAORDER : ACARI
Are the most medically and economically important arachnids.
PHYLUM ARTHROPOD Subphylum Chelicerata (Ke-lis’e-ra’ta) CLASS : ARACHNIDAORDER : ACARITICKS & MITES
PHYLUM ARTHROPOD
Subphylum Chelicerata (Ke-lis’e-ra’ta)
CLASS: ARACHNIDA
ORDER : ACARI
1 SPECIAL BODY CHARACTERISTIC
Exhibit complete fusion of cephalothorax and abdomen (differ from all other arachnids).
THE LARVAL STAGE OF A MITE?
CHIGGER.
ROCKY MTN SPOTTED FEVER IS CAUSED BY ------ THAT CARRY --------.
The sharing of derived characters between annelids and arthropods gives strong support to the hypothesis that both phyla originated from a line of
WHAT?
coelomate segmented protostomes
Arthropods are advanced over the annelids because?
3 REASONS
1)Specialized appendages 2)Tagmatization with specializations 3)Diversity of forms in arthropods