Lab 3 (Emily)

Question 1

Repeated, homologous body segments are called _______________.

Answer 1

Metameres

Question 2

The formation/repetition of metameres is called ________________.

Answer 2

Metamerism

Question 3

What does this display?

Answer 3

Metameres/Metamerism

Question 4

Annelids’ coeloms are divided by _____________.

Answer 4

Septae

Question 5

Annelids have a _______________ skeleton.

Answer 5

Hydrostatic

Question 6

A hydrostatic skeleton allows for the movement of __________________.

Answer 6

Each independent body segment.

Question 7

What are the three classes under the phylum Annelida?

Answer 7

1. Polychaeta
2. Oligochaeta
3. Hirudinida

Question 8

What are septae formed from?

Answer 8

Peritoneum

Question 9

What phylum and class do clamworms belong to?

Answer 9

Phylum: Annelida
Class: Polychaeta

Question 10

Clamworms have a thick _________ covering their bodies.

Answer 10

Cuticle

Question 11

What purpose(s) does the cuticle serve in clamworms?

Answer 11

Structural support and protection from the environment.

Question 12

Clamworm heads are comprised of ____ regions. What/where are they?

Answer 12

2 regions.

Prostomium) Anterior region of the head. Four eyes, palps, antennae between the palps, and tentacles can be found here.

Peristomium) Posterior region of the head. Mouth, jaws, and pharynx can be found here.

Question 13

The last segment of clamworms has the __________.

Answer 13

Anus