Exam 4

Question 1

4 groups of Cnidaria

Answer 1

Hydrozoa
Scyphozoa
Cubozoa
Anthozoa

Question 2

3 classes of Platyhelminthes

Answer 2

Turbellaria
Trematoda
Cestoda

Question 3

Two classes of Radiata

Answer 3

Cnidaria

Cnetophora

Question 4

Basic anatomical/morphological features of molluscs

Answer 4

Visceral mass
Mantle
Radula
Foot

Question 5

4 classes of Molluscs

Answer 5

Polypacophora
Gastropoda
Bivalvia
Cephalopoda

Question 6

3 classes of Annelida

Answer 6

Polychaeta
Oligochaeta
Hirudinea

Question 7

4 unifying features of Arthropods

Answer 7

Segmented bodies
Jointed legs
Exoskeleton
Open circulatory system/ sensory organs

Question 8

4 main groups of Arthropods

Answer 8

Chelicerata
Myriapoda
Hexapoda
Crustacea

Question 9

General features characterizing Echinodermata

Answer 9

Radial symmetry
Endoskeleton
Water-circulatory system

Question 10

Three main groups of Chordates

Answer 10

Urochordata
Cephalochordata
Vertebrates (craniata)

Question 11

Two anterior appendages on spiders and scorpions

Answer 11

Pedipalps

Question 12

Two features insects have that contributed to their evolutionary success

Answer 12

Flight/wings

“Niche partitioning”

Question 13

Taxa that cause human illness

Answer 13

Cnidarians- produce toxins/poisons
Trematoda- Schistomiosis and Swimmers Itch
Cestoda- tapeworms

Question 14

Choanoflagellates

Answer 14

Nearest non-animal taxon

Question 15

Ediacarian Fauna

Answer 15

Late protozoic 635 million years ago

Question 16

Morphology

Answer 16

Body symmetry recognized as Bilateral or Radial

Question 17

Germ Tissue

Answer 17

Unspecialized tissues at gastrulation

Question 18

Diploblastsic

Answer 18

Ectoderm and endoderm are present in gastrula and separated by space

Question 19

Triploblastic

Answer 19

Blastocoel replaced my mesodermal tissue

Question 20

Coelomate

Answer 20

Body cavity lines by tissues derived from mesoderm

Question 21

Blastophore

Answer 21

Opening of archenteron develops anus in deuterostomes and the mouth in protostomes

Question 22

Blastula

Answer 22

Hollow ball of cells that marks the end of cleavage stage during embryonic development

Question 23

Gastrula

Answer 23

Embryonic stage encompassing the formation of three layers: ectoderm, mesoderm, endoderm

Question 24

Cleavage

Answer 24

Pinching of plasma membrane

Question 25

Gastrulation

Answer 25

Series of cell and tissue movements in which the blastula stage folds inward, producing a three layered embryo, gastrula

Question 26

Lophophore

Answer 26

Ciliates feeding structure

Question 27

Polyp

Answer 27

Cnidarian body orientation; sessile

Question 28

Medusa

Answer 28

Cnidarian body orientation: motile

Question 29

Hirudin

Answer 29

Anticoagulant in salivary secretions in leeches