The Arthropods

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Arthropods

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joint footed

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Charteracteristics

Back 2

*exoskeleton: chitin, molting

* jointed appendages

* body segments: head and thorax make up the cephalothorax, abdomen

*open circulatory sytem: dorsal heart

*venteral nervous sytem: antennae, eyes (compound eyes and simple eyes)

Front 3

Subphylum crustacea

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lobsters, crawfish, shrimp, crabs, pill bugs,

barnacles

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life process of the crayfish

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*movement: muscles, legs, swimmerets, chilipods

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life process of the crayfish

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*nutrition: ingestion, digestion(esophagus, stomach, gasttic mill, digestive glans, intestine anus)

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life process of the crayfish

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*Circulation: open, dorsal heart, pericardial sinus, sternal sinus, green glands( filter out waste materials)

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life process of the crayfish

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*response: ventesal nervous system, sensory organs(compound eyes), sit atop movable stalks, antennae and antennules, statocyst, base of antenna for balance, molting 7 times the first year 2 a year

Front 8

Simmerets

Back 8

flipper like appendages

Front 9

chilipeds

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contain pincers

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subphylum chelicclta class arachida

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spiders, scorpions, stick bugs

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subphylum chelicclta class arachida charteracties

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* four pairs of walking legs

* two body parts cepharothrax, abdomen

* no atennae or monbibles

* respiration through book lungs

*usally four pairs of simple eyes

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class insecta characteristics

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* three pairs of walking legs

* wings usually presents: membranes, scale covered, colored, horny

*three body segments

* one pair of sensory antennae

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membranous wings

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thin, transparent, flying wings

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scale covered wings

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delicate, beautiful colored, russ off easily

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leather like wings

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covers membranous wings on grasshopper, protecting them

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horny wings

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thick shiled, covers membranous

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life process of insects

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*movement: jointed legs, wings

* mouthparts vary based on their particular food

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insects ingestion

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*variety of mouth parts : piercing, siphoning, sponging, chewing

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insects digestion

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*foregut: esophagus, crop, gizzard

*midgut: stomach, gastrio cecum

*hingut: intestine, rectum, anus

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insect resperation

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*trachee- throughout body

*spiracles-small pores along spiders

* high efficient- abdominal contractors pump air in and out

*criulation

*excretion

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pheromone

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a chemical released one animal that influences the behavior of another animal of the same species

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insect reproduction

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*sperate sexes

*testes/ovaries

*semial receptacle

*ovipositor

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orthoptera

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straight wing

Front 24

odonata

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thoothed

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coleopetra

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sheath wings ex: beetles weedles

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lepinoptera

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scale wings ex: butterfly

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hynenoptera

Back 27

membranouh wings ex: bees

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diptera

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two wings ex: mosquito