Phylum Annelida Flashcards Preview

Marine Biology and Ecology > Phylum Annelida > Flashcards

Flashcards in Phylum Annelida Deck (43):
1

Parapodia

"Feet" on either side of a worm

2

Coelom

The gut cavity surroundin the intestines

3

Longitudinal muscles

Muscles running along the length of an Anne lid that allows locomotion

4

Circular muscles

Muscle that surrounds the body of the Anne lid that work in conjuction with the longitudinal muscles to allow locomotion

5

Pharynx or probosis

Organ that connects the mouth with the esophagus

6

Prostomium

Unsegmented preoral portion of the head

7

Peristomium

Unsegmented portion if the head that is located between the prostomium and charter 1

8

Chaetiger 1

First segment with parapodia

9

Pygidium

The unsegmented tail region of the worm

10

Epitoky

Process of reproductiom in polychaetes referring to the growth of a reproductive epitome that is released during a specific time in the lunar cycle

11

Swarming

Reproductive behavior in time with the lunar cycle when certain polychaete swarm at the surface

12

Anterior

Head region

13

Posterior

End or tail region

14

Ventral

Belly side

15

Dorsal

Back side

16

Dioecious

Having reproductivery organs of one gender or another

17

Trocophore

Planktonic larval stage of the polychaete

18

Example of polychaete

Nereis

19

Example of oligochaeta

Earthworms

20

Example of hirudinea

Leeches

21

Example of pogonophora

Tube worm

22

Example of echiura

Spoon worm

23

What are the general characteristics of thus phylum?

They are segmented worms, good crawlers, burrowers, have a coelum, and live in various tropic habitats.

24

What kind of feeders are in this phylum?

Carnivorus, scavengers, deposit feeders, and filter feeders

25

Most Anne lids are members of what class

Ploychaeta

26

What type of feeders are polychaeta?

Carnivores

27

What structures does the needs use to capture prey?

Pharynx and jaws

28

What are the jaws made of

Protein and zinc

29

What is another name for the pharynx?

Probosis

30

What happens to the body before epitoky?

The anterior portion becomes the atone and begins to produce reproductive copies of itself called epitoke

31

What are the pals and tentacle cirri used for?

Sensory and feeling

32

What is the cuticle and what does it do

Covers the worm for moisture control

33

How many eyes does the mere is have?

4

34

What is the name for the simple, invertebrate eyes?

Singular - ocellus

Plural - ocelli

35

What structure does the nereis use to evert it's pharynx?

The protractor muscles

36

What's the major difference between oligochaetes and polychaetes?

Oligochetes have no parapods, are hermaphroditic, no larval stages, and are terrestrial while polychaetes are marine

37

How are leeches used in medicine?

They bring fresh blood to the skin.

After microsurgery or limb reattachment.

To add an anticoagulant to the area to prevent blood from clotting.

38

Is prostomium anterior

Yes

39

Is pygidium anterior

No, it's posterior

40

Is the pharynx anterior

Yes

41

Is the peristomium anterior

Yes

42

Is the anal cirri anterior

No, it's posterior

43

Is the ocelli anterior

Yes