Mod 11 (tbc; classifications)

Question 1

____ = little rings

Answer 1

annelus

Question 2

Phylum Annelida (Level of complexity)

Answer 2

Organ-system grade

Question 3

Segmented worms: displays a metameric body plan

Answer 3

Phylum Annelida

Question 4

Part of 1st segment. It is in front of (but does not include) the mouth, usually a small lip-like extension over the mouth. Sometimes bear sensory palps or tentacles.

Answer 4

Prostomium

Question 5

1st True body segment. Directly behind prostomium and contains the mouth. Predatory/parasitic forms may contain jaws or teeth.

Answer 5

Peristomium

Question 6

Head Portion (2 parts) of an Annelida

Answer 6

1. Prostomium
2. Peristomium

Question 7

The last segment of an Annelida; also bears the anus.

Answer 7

Pygidium

Question 8

Tiny bristles made of chitin found in epidermis. Usually

Answer 8

Setae

Question 9

Has a true body cavity, with peritoneum which holds organs in place.

Answer 9

Eucoelomate

Question 10

Acts like in expanding storage compartment. Absent in some earthworms.

Answer 10

Crop

Question 11

Strong, muscular organ. For grounding food and minerals.

Answer 11

Gizzard

Question 12

Phylum Annelida (Circulatory System)

Circulatory system is a _____

Answer 12

Closed type

Question 13

Primitive kidney but better than protonephridia

Answer 13

Metanephridia

Question 14

Terminal opening where waste and water is excreted out the body; Found near the ventral row of setae in each segment

Answer 14

Nephridiopore

Question 15

Thickened glandular, nonsegmented section of the body wall near the head in earthworms and leeches that functions in the storage of eggs

Answer 15

Clitellum

Question 16

Classification of Phylum Annelida

Answer 16

1. Class Polychaeta
2. Class Oligochaeta
3. Class Hirudinida

Question 17

Largest class of annelids

Answer 17

Class Polychaeta

Question 18

___ = many + ____ = long hair

Answer 18

poly, chaite

Question 19

Setae is less numerous than polychaetes and only found on the ventral surface of the first several segments

Answer 19

Class Oligochaeta

Question 20

More specialized than oligochaetes. Setae are absent.

Answer 20

Class Hirudinida