Animals II

Question 1

All Bilaterans are _______(diplo/triplo)blastic

Answer 1

Triploblastic

Question 2

True/False. All Bilaterans have true HOX Genes

Answer 2

true

Question 3

In segmented animals, HOX genes control what else in addition to anterior to posterior development?

Answer 3

The type of appendages formed by each segment

Question 4

What are the two groups of Bilaterans?

Answer 4

Protostomes and Deuterostomes

Question 5

Eumetazoans are sister to what group?

Answer 5

Sponges

Question 6

Name the 3 groups of Protostomes

Answer 6

Arrow worms, lophotrocozoan, and ecdysozoans

Question 7

Lophos are characterized by

Answer 7

filter feeding structure known as a lophophore and/or cilia bearing larvae known as trocophores

Question 8

Arrow worms are protostomes but their embryology is much like ______________

Answer 8

Deuterostromes

Question 9

Describe the body cavity of Arrow worms

Answer 9

acoelmate

Question 10

T/F Arrow worms are hermaphroditic

Answer 10

true

Question 11

T/F Lophos are monophyletic

Answer 11

False

Question 12

Name the 7 groups of Lophos

Answer 12

Bryozoans, Flatworms, Rotifers, Ribbon worms, Brachiopods, Annelidsn Mollusks. BAE FLY ROGERS ROVER BEFORE ANNAS MEETING

Question 13

T/F flatworms are acoelmate

Answer 13

true

Question 14

Name the 4 major groups of flatworms

Answer 14

Turbellaria, Monogenea, Trematoda, Cestoda

Question 15

T/F all four major flatworm groups are parasitic

Answer 15

False. Turbellaria are mostly free living predators and scavengers.

Question 16

Name an example species of Terbellaria

Answer 16

Planaria

Question 17

Describe all you know about Rotifers.

Answer 17

Complete gut, pseudocoelmate, corona captures prey, sexual/asexual, genetic recombination.

Question 18

Describe all you know about Ribbon Worms (Nemertea)

Answer 18

complete gut, circulatory system, coelmate. Regenerative.

Question 19

What is the only group of Bilaterans that are acoelmate?

Answer 19

Flatworms

Question 20

T/F All molluscs have a radula

Answer 20

False, only some do.

Question 21

T/F Mollusks have a visceral mass, foot, and mantle

Answer 21

true

Question 22

T/F Mollusks are segmented

Answer 22

false

Question 23

T/F Tapeworms and flukes have a body cavity

Answer 23

false

Question 24

T/F tapeworms and flukes have a mouth that opens into a blind sac

Answer 24

true