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Zoology 2040 > Quiz #2 > Flashcards

Quiz #2 Flashcards

1
Q

Secondary Cavity

A

Internal cavity surrounding the gut that provides a “tube inside a tube” arrangement to the body

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2
Q

A-Coelomate

A

Organisms with no secondary cavity

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3
Q

Psuedocoelomate

A

Animals with a secondary cavity that is not entirely lined with a mesoderm layer

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4
Q

Coelomate

A

Animals with a true coelom. Fully lined with mesoderm layer

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5
Q

Characteristics of Psuedocoelomates

A
  • Most have a pseudocoelom
  • Most have an external cuticle
  • Most have adhesive glands
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6
Q

Nematatoda

A
  • Pseudocoelomate
  • Roundworms
  • No proto-nephrida
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7
Q

Rotifera

A

-Pseudocoelomate
-Wheel animals
Has protonephridia

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8
Q

Early development is related to 4 phenomena

A
  1. Pattern of cleavage
  2. Determinism of development
  3. Type of coelom formation
  4. Blastopore orientation
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9
Q

Two types of cleavage

A

Radial & Spiral

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10
Q

Radial cleavage

A

Non-determinant
Entrocoelus
Deutersomes

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11
Q

Spiral cleavage

A

Determinant
Schyzo-coelus
Protosomes

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12
Q

Annelids

A
  • Segmented worms
  • Prostomium and pygidium
  • Complete digestive system
  • Blood through dorsal and ventral vessels
  • Dorsal brain
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13
Q

Oligochaeta

A 
Earthworms
Lack parapodia
Uniform segments
Deposit feeders
No jaws/palps
Hermaphroditic 
Cocoon with eggs
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14
Q

Hyrudeinea

A 
Leeches
Ecto-parasite
Partially lost segmentation
Hermaphroditic 
Cocoon and clitellum
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15
Q

Polychaeta

A

Unjointed appendages
chitin rods and setae
Palps, tentacles

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16
Q

Phyla closely related to Annelids

A

Sipuncula (peanut worms)
Echyura (spoon worms)
Pogonophora (beard worms)

17
Q

Two unique characteristics of mollusks

A
  • Radula

- 3 layer shell

18
Q

Mollusc body plan

A
  1. mantle (& 3 layer shell)
  2. mantle cavity
  3. Head-foot + visceral mass
19
Q

Molluscs

A

Open digestive system
Open circulatory system (except squid)
Meta nephridia
Gills or lungs in mantle cavity

20
Q

Classes in annelids

A

Oligochaeta
Hyrudeinea
Polychaeta

21
Q

Classes in Molluscs

A

Bivalvia
Gastropods
Cephalopoda

22
Q

Bivalvia

A 
clams, mussels
Sedentary
THESE DO NOT HAVE A RADULA
nervous system underdeveloped
trochophore larvae
23
Q

Gastropoda

A

Snails, slugs
radula
internal fertilization
egg cases

24
Q

Cephalopoda

A 
squids, octopus, nautilus 
jet propulsion
radula
separate species
external or internal fertilization
highly developed nervous system
25
Q

Arthropods

A 
Jointed appendages
exoskeleton
reduced coelom 
open circulatory system
no gills
insects: malpighian tubes
spiders: coxal glands
crustaceans: green glands
well developed nervous system
26
Q

subphylums in arthropods

A

Trilobita
Chelicerata
crustacea
uniramia

27
Q

Trilobita

A

trilobites
3 tagmata
1 pair antennae

28
Q

Chelicerata

A

cephalothorax
chelicerae
padipalps
walking legs

29
Q

3 classes in chelicerata

A

merostomata
picnogonida (sea spiders)
arachnida

30
Q

crustacea

A 
biramous appendages
2 pairs antennae
mandibles and maxillae
nauplius larvae
(zoea & megalopae also larvae)
31
Q

Myriapoda

A

centipedes, millipedes

2 part tagmata (head + trunk)

32
Q

Malacostraca

A 
class in crustacean
decapods (crab + shrimp)
5 pairs of legs
1 pair antennae
mandibles & maxillae
33
Q

Hexapoda

A 
uniramia
six legs
1 pair antennae 
compound eyes
malphigian tubes
well developed nervous sytem
34
Q

No metamorphosis

A

ametabolous
insects emerge egg looking like adult
wingless adults

35
Q

Incomplete metamorphosis

A 
hemi-metabolous
egg, nymph, adult
young lack wings
adults fully form wings
ex. dragonflies
36
Q

Complete metamorphosis

A

holo-metabolous
egg, larvae, pupa, adult
ex. butterflies

37
Q

adaptations in insects

A
  1. waxy cuticle
  2. most able to fly
  3. small size
  4. different mouthparts

Zoology 2040 (15 decks)

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