Test #8 (0ver lab 7)

Question 1

Earthworm class name

Answer 1

Oligochaeta

Question 2

Leech class name

Answer 2

Hirudinea

Question 3

Members of phylum Mollusca

Answer 3

Classes: Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda

Question 4

Nudibranch class name

Answer 4

Gastropoda

Question 5

chitons class name

Answer 5

Polyplacophora

Question 6

Snail/ Slug Class name

Answer 6

Gastropoda

Question 7

What is an adaptive function of the shell of chitons?

Answer 7

defense

Question 8

How many plates in chitons (polyplacophora) shell?

Answer 8

8

Question 9

why are nudibranchs so brightly colored?

Answer 9

to warn predators that they are dangerous

Question 10

What organs lie within the visceral mass?

Answer 10

heart, digestive organs, excretion organs, and reproductive organs

Question 11

How is the foot modified in Class Cephalopoda (squid)?

Answer 11

The foot is modified into tentacles

Question 12

What is the siphon used for?

Answer 12

jet propulsion

Question 13

How can you distinguish parapodia from setae?

Answer 13

Setae hang off the parapodia tubes

Question 14

What classes are in Phylum Annelida?

Answer 14

Classes: Polychaeta, Oligochaeta, and Hirudinea

Question 15

Sandworm class name

Answer 15

Polychaeta

Question 16

what organs are suspended within the coelom?

Answer 16

Intestine, nephrostome, dorsal vessel, and metanephridium

Question 17

What type of sexuality do leeches (class Hirudinea) have?

Answer 17

Hermaphroditic

Question 18

How does Class Cephalapoda (Phylum Mollusca) defend itself?

Answer 18

use chromatopores to mimic color and texture of surroundings, spraying ink to surprise and temporary blind predators

Question 19

How do Class Gastropoda (Phylum Mollusca) defend themselves?

Answer 19

nudibranchs sting predators, hard exterior shell gives protection

Question 20

How do Class Bivalvia (Phylum Mollusca) defend themselves?

Answer 20

hinged shell clamps shut to avoid predators

Question 21

How do Class Polyplacophora (Pylum Mollusca) defend themselves?

Answer 21

8 calcareous dorsal plates, suction to rocks, protecting soft tissue

Question 22

2 classes from lab 7 that filter feed?

Answer 22

Class Bivalvia and Class Polychaeta

Question 23

Previous class that filter feeds?

Answer 23

Porifera

Question 24

4 adaptations that Class Ceohalopoda has for hunting

Answer 24

Siphon (jet propulsion)
Chromatophores (camouflage)
Stratocysts (sense sound and gravity)
Cephalization (most intelligent invertebrate)

Question 25

polyplacophora feeding method

Answer 25

herbivores, algae from rocks

Question 26

Gastropoda feeding method

Answer 26

fungi

Question 27

Bivalvia feeding method

Answer 27

filter feeding

Question 28

What structure defines Phylum Annelida?

Answer 28

segmented body

Question 29

Foot use in Polyplacophora/ Gastropoda/ Bivalvia

Answer 29

``` Polyplacophora= Slow movement Gastropoda= movement Bivalvia= digging ```

Question 30

Two types of muscles that allow annelids to contract and lengthen bodies?

Answer 30

Circular and longitudinal

Question 31

What is segmentation's function in class Polychaeta, Oligochaeta, and Hirudinea?

Answer 31

Polychaeta=movement, defense (poisonous), and filter-feeding Oligochaeta=movement and friction Hirudinea=no setae

Question 32

What is the function of the parapodia?

Answer 32

Swimming, respiration,

Question 33

Do you see the bodies of nematodes contract?

Answer 33

no

Question 34

What type of muscles do nematodes lack?

Answer 34

Circular

Question 35

4 Characteristics that Phyla Mollusca, Annelida, Platyhelminthes and Nematoda share?

Answer 35

Triploblastic, heterotrophic, eukaryotic, and bilateral symmetry

Question 36

What body plan does Platyhelminthes have?

Answer 36

Acoelomate

Question 37

What body plan does Nematoda have?

Answer 37

Pseudocoelomate

Question 38

What body plan do Annelida and Mollusca have?

Answer 38

Coelomate