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Zoology > Phylum Annelida > Flashcards

Phylum Annelida Flashcards

1
Q

Phylum Annelida

A

Segmented worms
“the ringed ones”

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2
Q

Shared traits

A

Metamerism (true segmentation)
Bilateral, triploblastic
Cephilization (Not clear, but present)
Eucoelomates
Closed circulatory system
Organs system (complete digestive system)
Ventral nerve core

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3
Q

Key morphology

A

Presence of clitellum (surrounding saddle)
Setae/Chaetae near epidermis
Parapodia (like fiberglass with venom)

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3
Q

Ecology and reproduction

A

Marine, Freshwater, Terrestrial
Monoecious (cross fertilization)
Dioecious (poly)
Asexual/fragmentation (poly)

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4
Q

Polychaeta

A

the polychaetes
“many hairs”
1/2 annelid diversity

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5
Q

Polychaeta Characteristics

A

Parapodia
Mostly marine
Deep sea hydrothermal vents
Free-living

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6
Q

Clitellata

A

“saddle bearing”
Earth worms & leeches

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7
Q

Clitellata Characteristics

A

Monoecious
Freshwater, Terrestrial
Free-living
Ectoparasites

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Zoology (21 decks)

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