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Gen Bio II (yr1sem2) > Lab 5 (Arthropoda) > Flashcards

Lab 5 (Arthropoda) Flashcards

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Biology 101 flashcards
1
Q

phyla

A

arthropoda

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2
Q

arthropoda

A

largest animal group

  • have a jointed foot that is segmented, and used for different things
  • has an exoskeleton that molts
  • have joined appendages
  • compound and simple eyes (can have both)
  • open circulatory system
  • coelomates
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3
Q

specialized segments

A

head, thorax and abdomen

  • can either have a cephalothorax (head fused to thorax)
  • they have a brain with body segmented ganglia connected by a ventral nerve chord
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4
Q

respiratory systems

A

have gills, book gills (outside), book lungs (internal) and trachae

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5
Q

GI tract regionalization

A

regionalized into

  • foregut: pharynx, esophagus, and crop
  • midgut: ceca and midgut
  • hindgut: intestine, rectum and anus
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6
Q

GI tract

A

lined with peritrophic membrane to protect it and localize digestive enzymes
- have nephridia if aquatic or Malpighian tubules if terrestrial

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7
Q

Class Merostomata SUBPHYLA CHELICERATA

A

horseshoe crabs

  • have a carapace covering the dorsal side (underside) of the gills
  • have a tail thing that helps them maneuver water currents called a telson
  • have a pair of degenerate legs called chilaria
  • have book gills
  • have pedipalps for prey
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8
Q 
class arachnida
SUBPHYLA CHELICERATA
A

scorpions, ticks, mites and spiders

  • have four pairs of legs
  • spiders have their chelicerae modified into fangs
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9
Q

SUBPHYLA CRUSTACEA

A

two body regions

  • cephalothorax
  • abdomen
  • box shaped heart that is surrounded by a pericardial sac on dorsal surface
  • have a gastric mill and a gland that functions as a liver pancreas
  • THEY SWIM BACKWARDS
  • barnacles, mantis shrimp, crabs, krill shrimp, crayfish etc.
  • have double branched appendages
  • compound eyes, two pairs of antennae
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10
Q

analogous

A

similar functions but different embryologic origins

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11
Q

Homologous

A

not similar functions from the same body region

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12
Q 
SUBPHYLA MYRIAPODA
class chilopods
A

1 pair of legs/ segment

- centipedes are venomous!

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13
Q 
SUBPHYLA MYRIAPODA
class diplopoda
A

2 pairs of legs per body segment

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14
Q 
SUBPHYLA Hexapoda
class insecta
A
  • head with antennae, compound eyes, and simple eyes (ocelli)
  • thorax is in three parts (pro, miso, meta- thorax)
  • abdomen
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15
Q

SUBPHYLA MYRIAPODA

A

have complete metamorphosis or can have incomplete where it just grows but looks the same

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16
Q

look at the images

A

okay

17
Q

which thing is most deadly to humans?

A

mosquito

18
Q

exoskeleton is made of

A

chitin (if hard, it is infused with calcium carbonate)

19
Q

SUBPHYLA CHELICERATA

A
  • characterized by cephalothorax (fused head and thorax), and pincers called chelicerae
  • have a second pair of appendages called pedipalps for catching prey
20
Q

anatomy of a crustacean

A

have first antennae, second antennae, mandibles, maxillae, and maxillipeds

  • mandible to cheeped are used for feeding
  • swimmerets or pleopods are smaller appendages. - in a male crayfish, each of the first pair of swimmerets has an odd shape, modified to transfer packets of sperm to a female during reproduction. The most posterior pair of appendages are broad, flat uropods.
21
Q

analogous structures of a spider and crayfish

A

chelicerae of a spider to the mandibles of a crayfish because similar functions but not same body segment

22
Q

homologous structures of spider and crayfish

A

chelicerae and anterior pair of antennae of crayfish.

- have similar development origin but not same function

23
Q

crayfish anatomy

A
  • have a diamond shaped heart with a thin pericardial sac
  • blood enters the heart through ostia
  • gonads (testes are white, ovaries are orange)
  • stomach is a continuous membrane
  • has a digestive gland
  • have a ventral nerve chord, brain and ganglia
24
Q

grasshopper parts

A
  • look at the diagram
25
Q

spiders vs insects

A

spiders have two body regions and eight legs, insects have three body regions and six legs

26
Q

gills attached to legs of crayfish

A

move water over gills

27
Q

how many legs are chelate in crayfish

A

chelate is pincers, three pairs

28
Q

subphyla uniramia

A

single branched appendages

chilopods, diplopods and insects

29
Q

trachae

A

respiratory system in grasshopper

Gen Bio II (yr1sem2) (18 decks)

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