Arthropoda Flashcards

1
Q

Ecdysozoa

A

shedding organism

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2
Q

ecdysone

A

hormone that stimulates shedding

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3
Q

What is metamorphosis

A

changing shape brah

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4
Q

What does the sub phylum cheliceratea include?

A

arachnids, horse shoe crabs (merostomata), and sea spiders

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5
Q

what are the characteristics of chelicerata?

A

two tagmata, prosoma (head), opisthosoma(butt)
chelicerae(mouth fangs)
six pairs of appendages, four legs, chelicerae and pedipalps

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6
Q

What do chelicerae do

A

grab and stab

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7
Q

What are merostomata

A

a class of chelicerata
horse shoe crabs

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8
Q

What are arachnida and what do they include

A

a class of chelicerata
Includes spiders, scorpions, harvestmen, ticks & mites
pedipalps
good parents

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9
Q

What are pyncogonida and their characteristsics and what do they do

A

sea spiders
long legs and reduced bodies
marine
they eat soft invertebrates

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10
Q

what animals are in the myriopoda subphylum?

A

centipedes and millipedes

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11
Q

what are the classes of myriapoda?

A

chilopoda(centipedes) and diplopoda (millipedes)

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12
Q

what are the characteristics of chilopoda?

A

centipedes
mostly 1 leg per segemnt
terrestrial
flattened bodies
last segment has sensory function
first pair for poison claws
predators

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13
Q

What are the characteristics of Diplopoda?

A

millipedes
mostly 2 legs per segment
cylindrical
scavanegers

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14
Q

What classes are under the subphylum pancrustacea?

A

crustacea and hexapoda

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15
Q

What are the shared characteristics of crustaceans?

A

aquatic
cephalothorax
pleon
2 pairs of antennae
1 paid of mandibles
and 2 pairs of maxillae
one pair of appendages per tagmata
biramous appendages

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16
Q

What kind of circulatory system do crustaceans have?

A

open circulatory systems with haemolymph
the haemolymph fills the body cavity
is pumped by a heart in larger species
has haemoglobin or haemocyamin or oxygen transport

17
Q

What is the crustacean lifecycle like?

A

most brood eggs
have larvae
undergo metamorphosis

18
Q

What are the classes of crustacea

A

Maxillopoda, malascostraca, branchiopoda

19
Q

What is the class Maxillopda composed of?

A

barnacles, copeopods and ostracods

20
Q

Barnacle movement

A

They are the only sessile crucstaceans
their heads are stuck to the substrate and their legs “cirri” stick up

21
Q

What are castrator barnacles?

A

eg. sacculina barnacles
they sterilise and feminise male crabs
female or male crabs tend to the barnacle eggs because the barnacles control their hormones.
the free swimming larvae of barnacles find and infect new crabs

22
Q

What does the class malascostraca consist of?

A

crabs, lobsters, krill, prawns, crayfish, mantis shrimp, slaters, amphipods, and heaps more
have all the characteristics of crustaceans

23
Q

What are the orders of malascostraca?

A

Decapoda, isopoda and amphipoda

24
Q

What are the characteristics of decapoda?

A

10 legs (dec)
they are the ones we eat (crabs, lobsters, prawns)
only slightly terrestrial…
larval stages are strictly marine

25
Q

What is the only true terrestrial crustacean?

26
Q

What does the order isopoda include?

A

slaters and giant deep sea isopods

27
Q

what does the order amphipoda consist of?

A

free swimming or cyamids

28
Q

What are the subphlya of Arthropods?

A

Chelicerata, crustaceans, hexapoda and myriapoda

29
Q

Which classes does the subphylum Hexapoda include?

A

Entognatha and insecta

30
Q

what are the main characteristics of hexapoda?

A

3 tagmata
1 pair of antennae
uniramous appendages
usually have wings
head, thorax and abdomen

31
Q

What are the characteristics of the class entognatha?

A

six legs
enclosed entognathus
no wings

32
Q

what are the classes of entognatha?

A

collembolans, diplurans and proturans

33
Q

What are the main characteristics of the class insecta?

A

ectothagnus exposed, highly specialised mouthparts
six legs attached to thorax
one pair of antennae

34
Q

what is hemitabolous?

A

incomplete metamorphosis, so the insect kind of just grows

35
Q

what is holometabolous?

A

complete metamorphosis

36
Q

What are the subphyla of arthropods?

A

chelicerata, crustacea, myriapoda and hexapoda