Lab 6 Mulluska and Annelida

Question 1

What is the Umbo

Answer 1

Oldest section of a shell

Question 2

Which mollusca group has a CLOSED circulatory system?

Answer 2

Cephalopoda

Question 3

What is the process Gastropoda go through involving intestines and anus

Answer 3

torsion! their intestine and anal cavity twitst around towards their head

Question 4

Chitins are part of what Molluska class?

Answer 4

Polyplacophora

Question 5

Four anatomical features of Mollusca Phylum

Answer 5

Head, Foot, Shell, Mantle

Question 6

Most mullusca are dioecious or monoecious?

Answer 6

dioecious

Question 7

Name the Class earthworms belong to.

Answer 7

Oligochaeta

Question 8

Characteristics of earthworms

Answer 8

lack parpodia and setae, clitellum, not well developed head

Question 9

earthworms are monoecious or dioecious?

Answer 9

monoecious (hermpahroditic ) cross fertilize.

Question 10

Name the class leeches belong to in the phylum annelida

Answer 10

Leeches belong to the class Hirudinea

Question 11

What are leeches

Answer 11

ectoparasites

Question 12

Name the class of bristle worms and sandworms

Answer 12

Polychaeta

Question 13

Characteristics of Polychaeta

Answer 13

Lots of setae that attach at parapodia. well developed head region

Question 14

Phylum Annelida chracteristics

Answer 14

Closed circulatory system , segmented, hydrostatic skeleton, complete gut.

Question 15

what are setae?

Answer 15

hair-like bristles to anchor them in soil.