Bootlace and Annelid Worms Flashcards

1
Q

What phyla do bootlace worms belong too?

A

Nemertea

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2
Q

What phyla do annelid worms belong too?

A

Annelida

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3
Q

A few characteristics of the phylum nemertea- Greek nymph.

A

Bootlace or Ribbon worms
Stretchy
Marine, freshwater, some terrestrial environments
Feed with hollow muscular PROBOSCICS EVERTS FROM RHYNCHOCOEL .
Carnviores
Mouth and anus
Protonephridia

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4
Q

What is the name of the giant bootlace worm?

A

Lineus longissimus

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5
Q

Examples of Annelida - Little ring.

A

Lumbricus, Hirudo, Nereis, Arenicola

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6
Q

Featured of Annelid worms

A

22,000 species
Metameric segmentation divided internally by septa
Nephridium
Flatworms can undulate and swim

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7
Q

What are the ways in which annelids move?

A

Earthworms- burrow and crawl
Ragworms- swim lateral undulations
Lugworms- irrigate in burrows
Leeches- swim by up-down undulations

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8
Q

Classes of Annelids

A

Oligochaeta - earthworms
Hirudinea- leeches
Polychaeta- all marine

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9
Q

Oligochaeta features

A

4 bundles chaetae
Sac for eggs at front of citellum
Cocoon forms round citellum and shed
Two worms lie side by side head to tail and exchange sperm

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10
Q

Hirdudinea

A

Leeches
No chaetae
3 jaws
Secrete hirudin

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11
Q

Polychaeta

A

Many bristles
Some carnivorous with toothed jaws
Some filter prey with feathery tentacles
BEAR PARAPODIA

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12
Q

Environmental sex determination

A

Isolated female, chemical from larger female triggers change to male

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13
Q

Eptioky

A

Segments swell and fill with gametes

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