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invert zoo > lab exam #2 > Flashcards

lab exam #2 Flashcards

(52 cards)

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1
Q

mollusk body plan

A

coelomate

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2
Q

coelomate

A

a true body cavity lined with mesoderm and the organism is surrounded in tissue derived from the mesoderm

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3
Q

visceral mass

A

body cavity/location of organs within a mollusk

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4
Q

mantle

A

thin layer of tissue surrounding the visceral mass

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5
Q

mantle cavity

A

space between visceral mass and mantle

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6
Q

open circulatory system

A

blood does not stay within vessels; pumped out of heart through arteries but makes its way back through body cavity

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7
Q

hemolymph

A

hemocoel of mollusk is filled with blood so it is not just blood

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8
Q

classification of chiton

A

phylum Mollusca, class polyplacophora

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9
Q

what does class gastropod include

A

snails and slugs

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10
Q

classification of northern quahog

A

phylum mollusca, class bivalve, ex. mercenary mercenaria

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11
Q

name of squid from lab

A

long-finned squid
doryteuthis pealeii
class cephalopoda
phylum mollusca

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12
Q

classification of shorten squid

A

phylum mollusca, class Cephalopoda

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13
Q

characteristics of phylum arthropoda subphylum chelicerata

A

mouthparts = chelicerae (first appendage) (pincher parts for grabbing/eating), no antennae, 2nd appendage is pedipalps (grabbing/mating/sensory functions), and 2 tagmata

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14
Q

tagmata

A

regions of arthropod body - can be 2 or 3

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15
Q

tagmatization

A

fusion of tagmata

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16
Q

classification of horseshoe crab

A

phylum arthropoda, class merostomata, limulus polyphemus

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17
Q

classification of sea spider

A

phylum arthropoda class pycnogonida

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18
Q

examples of phylum arthropoda, class arachnida

A

spiders, ticks, scorpions, whip scorpions, and mites

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19
Q

characteristics of subphylum crustacea

A

jaw-like mandibles
biramous appendages
2 pairs of antennae
2 or 3 tagmata
mostly aquatic/marine

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20
Q

general characteristics of phylum arthropoda

A

coelomate protostomes
segmented bodies
jointed appendages
exoskeleton

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21
Q

characteristics of horseshoes crab

Study These Flashcards
A

2 body regions
rounded carapace
posterior telson
book gills

22
Q

characteristics of sea spiders

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A

chelicerae
pedipalps
4 pairs of legs
2 tagmata

23
Q

characteristics of arachnids

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A

2 tagmata
chelicerae and palms
4 pairs of walking legs

24
Q

characteristics of class brachiopoda

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A

feathery legs because of gills
ex. fairy shrimp/brine shrimp
*daphnia is an important example

25
characteristics of class Copepoda
planktonic/benthic/ectoparasite larva = nauplius
26
characteristics of class cirripedia
ex. barnacles stalked/sessile/parasitic exoskeleton 6 pairs of modified legs nauplius and capris larval stages
27
classification of crab in lab
Jonah crab cancer borealias phylum arthropods order decapods
28
characteristics of subphylum hexapoda class insects
3 body regions 1 pair of antennae 2 compound eyes 3 ocelli for sensing light 2 pairs of wings
29
classification of grasshopper in lab
eastern lubber grasshopper romalea microptera phylum arthropoda order orthoptera
30
entero- development of echinoderms
form a coelom that has mesodermal out pockets, creating a primitive gut in blastopore, and then the pockets separate and pinch out during gastrulation phase
31
deuterostome development
anus forms first and mouth forms second
32
characteristics of phylum echinodermata
bilateral larva radial adults typically pentamerous not much cephalization exclusively marine endoskeleton external fertilization
33
4 classes of echinoderms we looked at
Asteroidea Ophiuroidea Echinoidea Holothuroidea
34
characteristics of class asteroidea
ex. starfish pentamerous radial symmetry central disk not easily demarcated movement using tube feet brightly colored can eject cardiac stomach to catch and eat prey
35
characteristics of class Holothuroidea
ex. sea cucumber cylindrical elongated along aboral/oral axis tube feet in 5 rows along sides of body no arms can eviscerate internal organs as a defensive mechanism
36
characteristics of class Ophiuroidea
ex. brittle stars long arms sharply demarcated central disk 5 arms movement by wriggling arms
37
characteristics of class Echinoidea
ex. sea urchins rigid test covered by a ciliated epidermis (spines) no arms 2 groups
38
regular sea urchins
traditional sea urchins with perfect pentaradial symmetry, globular, and long defined spines
39
irregular sea urchins
ex. sand dollar/sea biscuit biracial symmetry flattened short/fuzzy/velvety spines covering the test
40
name of sea star from lab
asterias sp.
41
characteristics of phylum chordata
all vertebrates and related organisms dorsal notochord dorsal tubular nerve chord tail posterior to anus pharynx with paired gill slits
42
characteristics of subphylum tunicata (Urochordata)
ex. seq squirt (ciona intestinalis), larvaceans, and salts marine soft bodied u-shaped gut body covered in tunic
43
class ascidiacea
ex. sea squirts bag shaped 2 siphones solitary or colonial
44
other name for branchiostoma
amphioxus
45
how do bivalves eat
water current enters inhalant chamber via inhalant siphon, enters ostia, and leaves the exhaling chamber food is filtered out of the current vis ostia and moved to food grooves then transported to mouth
46
flow of open circulatory system
blood pumped out of heart through arteries, enters the hemocoel which surrounds the organs, blood returns to heart through ostia
47
purpose of 2 branchial hearts in squid
considered accessory hearts supply gills with unoxygentaed blood so that it can become oxygenated
48
purpose of 1 systemic heart
supplies the rest of the body with oxygenated blood once received from branchial heart
49
how do squids use jet propulsion
water enters mantle via inhalant siphon circular muscles contract in mantle forces water within mantle cavity out of the funnel
50
extinct arthropod we discussed
trilobites subphylum trilobitomorpha
51
how many ostia does the crab heart from lab have
3 pairs 2 dorsal 1 lateral
52
Malpighian tubes of grasshopper
found where mid and hindgut meet excretory organs empty waste through urine

invert zoo (3 decks)

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