Download ARTHROPODS - Bishop Shanahan High School

ARTHROPODS
A very successful group
CHARACTERISTICS
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SEGMENTED BODY
TOUGH EXOSKELETON – PROTEIN &
CHITIN
JOINTED APPENDAGES: LEGS;
ANTENNAE; MOUTH PARTS
COMPLEX ORGAN SYSTEMS
HIGH DEGREE OF CEPHALIZATION
OPEN CIRCULATORY SYSTEM
FEEDING
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HERBIVORE; CARNIVORE; OR OMNIVORE
RESPIRATION
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TERRESTRIAL ARTHROPODS
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TRACHEAL TUBES (TRACHEAE)
SPIRACLES
AIR SAC
BOOK LUNG – SPIDER
AQUATIC ARTHROPODS
gills
CIRCULATION
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OPEN CIRCULATORY SYSTEM
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BLOOD LEAVES BLOOD VESSEL AND DIRECTLY
SURROUNDS TISSUES
EXCRETION
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ELIMINATION OF NITROGENOUS
WASTES
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MALPIGHIAN TUBULES – INSECT
GREEN GLAND - CRUSTACEAN
NERVOUS SYSTEM
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WELL DEVEL0PED
BRAIN, VENTRAL NERVE CORD
COORDINATE MOVEMENTS
EYES, EARS
MOVEMENT
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MUSCLES PULL ON EXOSKELETON
REPRODUCTION
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SEPARATE SEXES
TERRESTRIAL ARTHROPOD: INTERNAL
FERTILIZATION
AQUATIC ARTHROPOD: INTERNAL OR
EXTERNAL FERTILIZATION
GROWTH & DEVELOPMENT
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EXOSKELETON DOES NOT GROW WITH
THE ORGANISM
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MOLT
GROUPS OF ARTHROPODS
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CLASSIFIED BY NUMBER AND
STRUCTURE OF BODY SEGMENTS AND
APPENDAGES
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CRUSTACEA
ARACHNID
INSECTS
CENTIPEDE
MILLIPEDE
CLASS CRUSTACEA
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AQUATIC
CRAB; SHRIMP; LOBSTER; CRAYFISH
EXOSKELETON HAS CALCIUM
2 PRS. BRANCHED ANTENNAE
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Antennule: touch, taste, equilibrium
Antenna: touch taste
CRUSTACEA (CONT’D.)
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2 OR 3 BODY REGIONS
CHEWING MOUTH PARTS: MANDIBLE –
BITE AND GRIND
CRAYFISH
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FRESHWATER
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2 BODY REGIONS: cephalothorax &
abdomen
CARAPACE – EXOSKELETON IN
CEPHALOTHORAX
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5 PAIRS OF LEGS
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CHELIPED: 1st pair of legs
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SWIMMERETS: ventral surface of abdomen
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TELSON & UROPOD: tail
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OPEN CIRCULATORY SYSTEM: dorsal
aorta
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RESPIRATION: GILLS
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EXCRETORY ORGAN: GREEN GLAND
ARACHNID
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2 BODY REGIONS
4 PAIRS OF LEGS
BOOK LUNGS: RESPIRATION
SPINNERETS: glands which produce web
CLASS INSECTA
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EVOLUTION OF FLIGHT ALLOWED
INSECTS TO SPREAD OUT
3 BODY REGIONS: head; thorax; abdomen
3 PAIRS OF LEGS ON THORAX: walking;
jumping; hold food
1 ANTENNAE
1 PAIR OF COMPOUND EYES: many
lenses
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2 PAIRS OF WINGS ON THORAX
TYMPANUM – EAR ; ON THORAX
MOUTH PARTS: labrum; labium; maxilla;
mandible
CIRCULATION: open
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Dorsal aorta
Does not use circulatory system to exchange oxygen
METAMORPHOSIS
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CHANGE IN FORM DURING DEVELOPMENT
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COMPLETE: EGG LARVA PUPA ADULT
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BUTTERFLY
INCOMPLETE: EGG NYMPH ADULT
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GRASSHOPPER