Invertebrates Part 1

Question 1

Sedentary animals from the phyla Calcarea and Silicea

Answer 1

Sponges

Question 2

lack true tissues and organs

Answer 2

Sponges

Question 3

Capture food particles suspended in the water that pass through their body

Answer 3

Suspension feeders

Question 4

flagellated collar cells that generate water current thru sponge and ingest suspended food

Answer 4

choanocytes

Question 5

Opening at top of sponge

Answer 5

osculum

Question 6

cavity where water is stored in sponge

Answer 6

spongocoel

Question 7

found in mesohyl and play role in digestion and structure

Answer 7

Amoebocyte

Question 8

All animals except ________ and few belong to _________

Answer 8

Sponges, Eumetazoa

Question 9

Symmetry of cnidarians

Answer 9

Radial

Question 10

Sessile cnidarian with the tentacles and mouth at the top

Answer 10

Polyp

Question 11

Motile cnidarian with the tentacles and the mouth pointing down

Answer 11

Medusa

Question 12

are carnivores and use tentacles to capture prey

Answer 12

cnidarians

Question 13

Unique cells that function in defense and capture of prety

Answer 13

Cnidocytes

Question 14

specialized organelles w/in cnidocytes that eject a stinging thread

Answer 14

nematocysts

Question 15

Hydrozoa, Scyphozoa, Cubuzoa, Anthozoa

Answer 15

Four classes of phylum cnidaria

Question 16

mostly marine, few freshwater, both polyp and medusa stages in most species, polyp stage often colonial

Answer 16

Hydrozoa

Question 17

all marine, polyp stage reduced/absent. Free swimming medusa (JELLIES)

Answer 17

Scyphozoa

Question 18

all marine, box-shaped medusa, potent venom

Answer 18

Cubozoa

Question 19

all marine, medusa stage absent, most sessile, many colonial (POLYPS)

Answer 19

Anthozoa

Question 20

have the widest range of animal body forms

Answer 20

Lophotrochozoans

Question 21

Lophotrochozoa, Ecdysozoa, Deuterostomia

Answer 21

make up clade Bilateria

Question 22

live in marine, freshwater and damp terrestrial habitats

Answer 22

Platyhelminthes

Question 23

are acoelomates despite undergoing triploblastic development

Answer 23

flatworms

Question 24

have no specialized circulatory system, incomplete digestive system (gastrovascular cavity)

Answer 24

Platyhelminthes

Question 25

Turbellaria, Monogenea, Trematoda, Cestoda

Answer 25

4 classes of Platyhelminthes

Question 26

best known turbellarians, used in bioremediation and stem cell research

Answer 26

Planarians

Question 27

parasites of vertebrates and have no digestive system

Answer 27

Tapeworm

Question 28

are hermaphrodites and can reproduce sexually/asexually thru fission

Answer 28

Planarians

Question 29

are smaller than many protists but are multicellular and have specialized organ systems

Answer 29

Rotifers

Question 30

Reproduce by parthenogenesis

Answer 30

Rotifers

Question 31

Females produce offspring from unfertilized eggs

Answer 31

parthenogenesis

Question 32

Most hydrozoans alternate between _____ and ____ form

Answer 32

Polyp and Medusa

Question 33

includes box jellies and sea wasps, often have highly toxic cnidocytes

Answer 33

Cubozoans

Question 34

Includes corals and sea anemones, occur only as polyps

Answer 34

Anthozoans

Question 35

have an alimentary canal (digestive tube with separate mouth and anus that lies w/in pseudocoelom)

Answer 35

Rotifers

Question 36

are diploblastic and radially symmetrical, also have complete digestive system

Answer 36

Ctenophores

Question 37

comb jellies, sea walnuts. Many have colloblasts used for capturing prey

Answer 37

Ctenophores

Question 38

are acoelomates

Answer 38

Platyhelminthes

Question 39

are eucoelomates and are segmented

Answer 39

Annelida

Question 40

derive nutrition from a primary host (vertebrate) as well as intermediary host (snail)

Answer 40

digenetic flukes