LONG QUIZ Module 3

Question 1

Order of the clades:

Ecdyzoa (2)

Lophotrochozoa (6)

Deuterostomia (possess body cavity) (2)

Acoelomates (no coelom) (1)

Radiata (radial, diploblastic) (2)

Parazoa (no tissue) (1)

Answer 1

Arthropoda
Nematoda

Platyhelminthes
Rotifera
Ectoprocta
Brachiopoda
Annelida
Mollusca

Chordata
Echinodermata

Acoela

Cnidaria
Ctenophora

Porifera

Question 2

Phylum of flatworms:

layers:
symmetry:
coelom?:
segmented?:
reproduction?:
example (2)

Answer 2

Platyhelminthes

triploblastic
bilaterally symmetrical
acoelomate
unsegmented
monoecious
fluke, tapeworms

Question 3

Phylum Platyhelminthes:

What organs do flatworms use for osmoregulation?

What is the most popular free living flatworm?

What do they use to detect chemicals?

Answer 3

protonephridia

Planarians

Lateral flaps

Question 4

Phylum Platyhelminthes:

What is the popular parasitic flatworm?

What do these use?

Answer 4

Trematodes

Suckers

Question 5

Phylum Platyhelminthes:

What is the second large diverse group of parasitic flatworms?

Anterior end with suckers and a hook?

Posterior which is a long ribbon for sec organ sacs:

Answer 5

Tapeworms

Scolex
Proglottids

Question 6

Phylum of roundworm, threadworm, pinworm:

layers:
symmetry:
coelom?:
segmented?:
reproduction?:

Answer 6

Nematoda

triploblastic
bilateral
pseudocoel (not lined by mesoderm, parenchyma)
unsegmented
gonochoristic

Question 7

Phylum Nematoda:

The model organism from this group:

Two kinds of nematoda, one with phasmids one without

Answer 7

caenorhabditis elegans

Secementea
adenophorea

Question 8

Phylum Nematoda:

What are the sensory organs of nematodes?

Enlarged phasmids are called what?

Answer 8

Chemoreceptors

Mechanoreceptors

Question 9

Phylum of segmented worms:

layers:
symmetry:
coelom?:
segmented?:
reproduction?:

What does it have around its body?

Answer 9

Annelids

triploblastic
bilateral
schizocoelous (compartments by transverse septa)
Segmented
monoecious

Cuticle

Question 10

Phylum annelida:

They are ____ segmented, externally through: ____internally by:____

Each segment is called a segment or _____

Answer 10

metamerically
transverse grooves
septa

metamere

Question 11

Phylum annelida:

Annelida imeans ___ referring to the annelid’s resemblance to it

What are the four main groups of annelida?

Answer 11

little rings

Archiannellida
Polychaeta (bristle worms)
Oligochaeta (earthworms)
Hirudinea (leeches)

Question 12

Phylum annelida:

parts of a bristle worm:
1. Head
a. Antennae and palps, feeding appendages
b. regiona round mouth w proboscis
c. anterior part of digestive tract

2. Trunk
   a. flatlike projections for locomotion and gas exchange
   b. chitinous bristle
3. Tail

Answer 12

1. Head
   a. prostomium
   b. peristomium
   c. pharynx
2. trunk
   a. parapoidal
   b. setae

Question 13

Phylum annelida:

What chemical does the leech secrete to stop coagulating?

Answer 13

hirudin

Question 14

Phylum annelida:

Parts of an earthworm:

____ bristles used for burrowing
____ nervous system
____ Each segment with excretory tubes

Answer 14

Chaetae
Cerebral ganglia
Metanephridium