Protostomes (ch. 34)

Question 1

What is the biggest phylum for protostomes?

Answer 1

Anthropoda

Question 2

What is a protostome?

Answer 2

“first mouth” blastopore becomes mouth

Question 3

How would you describe schizocoely? The embyronic ____ splits to form coelom in protostomes.

Answer 3

mesoderm

Question 4

How would you describe enteroceoly? Fold of the _____ form coelom in deuterostomes.

Answer 4

archenteron

Question 5

How big are rotifers?

Answer 5

less than 1mm

Question 6

Rotifers are ___ feeders and have ____ (corona).

Answer 6

suspension; cilia

Question 7

Rotifers are motile or sessile?

Answer 7

sessile

Question 8

What is the common name for Platyhelminthes?

Answer 8

Flatworms

Question 9

Flatworms have ___ germ layers.

Answer 9

3

Question 10

Flatworms are ____coelomate.

Answer 10

a…coelomate

Question 11

_____ are an example of flatworms.

Answer 11

Planarians, Liver flukes, Blood flukes, Tapeworms, etc

Question 12

Annelids are _____ worms.

Answer 12

segmented

Question 13

Definition: repeated body structures, i.e., vertebrates

two types: vertebrates and invertebrates

Answer 13

Segmentation

Question 14

Name some annelids…3 classes: Oligochaeta (___), hirudinea (___), polychaeta (____).

Answer 14

Oligochaeta (earthworm), hirudinea (leeches), polychaeta (Bristle worms)

Question 15

What do you know about Earthworm anatomy? They have ___ pair of “hearts” and ____ridia.

Answer 15

5; neph…ridia

Question 16

Leeches (Hirudinea) are ____ and have saliva that contains a anesthetic and ____coagulant.

Answer 16

parasitic; anti…

Question 17

Mollusks have ____ symmetry.

Answer 17

Bilateral

Question 18

Mollusks have a foot, ____ mass and a mantle.

Answer 18

visceral

Question 19

What are the 4 lineages of mollusca: bivalves, ___pods, chitons and ___pods.

Answer 19

gastro, cephalo

Question 20

Polyplacophora (poly-placo-phora) refers to the …

Answer 20

Chiton

Question 21

Name some cephalopods: octopus…

Answer 21

squid, nautilus, cuttlefish, etc.

Question 22

Cephalopods have a complex ____ system, and they are ___.

Answer 22

sensory; predators

Question 23

Bivalves have ___ closeable shells. They are ___ feeders.

Answer 23

2, filter

Question 24

Examples of bivalves are …

Answer 24

clams, scallops

Question 25

Gastropods "stomach-foot" makes you think of what animal?

Answer 25

snails and slugs

Question 26

Gastropods eat with ____ula.

Answer 26

Rad..ula

Question 27

Roundworms are considered ____.

Answer 27

Nematodes (phylum Nematoda)

Question 28

Nematodes have a ___coelom. They lack segmentation.

Answer 28

pseudo

Question 29

Definition: A system of body support involving a body wall in tension surrounding a fluid or soft tissue under compression. Hydro.....

Answer 29

Hydrostatic skeleton

Question 30

Nematodes can also be ____. Examples include intestinal roundworms, elephantiasis and heartworms.

Answer 30

Parasitic

Question 31

Soil nematodes are _____ and can be plant parasites.

Answer 31

decomposers

Question 32

Anthropods have an _____ made of chitin.

Answer 32

exoskeleton

Question 33

There are more than ___ million species of anthropods.

Answer 33

1

Question 34

True or False: Trilobites are almost extinct, so some remain still today.

Answer 34

False! They are ALL extinct!

Question 35

Name an anthropod in the subphylum Hexapoda ("six-legs).

Answer 35

Grasshopper

Question 36

The three body regions of the hexapods are head, ___, and abdomen.

Answer 36

thorax

Question 37

Definition: Transition from one developmental stage to another, such as from larval to the adult form of an animal.

Answer 37

metamorphosis

Question 38

Spider crabs and the monarch _____ go through metamorphosis (larva --> adult)

Answer 38

butterfly

Question 39

Arachnids have ___ legs and include spiders, scorpions, ticks, mites, etc. These and the horseshoe-crabs make up the subphylum ____.

Answer 39

8, chelicerata

Question 40

Centipedes (2 legs/segment) and millipeds (4 legs/segment) make up the subphylum ____.

Answer 40

Myriapoda

Question 41

These have ten legs and include crabs, shrimp, crayfish, lobsters and isopods. These are all in the subphylum _____.

Answer 41

Crustacea