Flatworms 2

Question 1

corona

Answer 1

ciliated crown important for both feeding and locomotion

Question 2

phylum rotifrea body form

Answer 2

free-living

Question 3

digestive system of phylum rotifera

Answer 3

complete: mouth to anus

Question 4

protonephridial tubules

Answer 4

excretory system that empties into common bladder

Question 5

cloaca

Answer 5

bladder drains into it which serves as intestines and oviduct

Question 6

sensory organs of the rotifer (5)

Answer 6

eyespots, bristles, papillae, and ciliated pits and dorsal antennae

Question 7

mastax

Answer 7

muscular pharynx equipped with hard jaws

Question 8

trophi

Answer 8

hard jaws

Question 9

hunters

Answer 9

project trophy to seize prey

Question 10

trappers

Answer 10

have a funnel-shaped area around the mouth; fold inward to entrap prey

Question 11

parthenogenesis

Answer 11

form of asexual reproduction

Question 12

winter resistant eggs lead to what?

Answer 12

thick resistant shell that will hatch as amitotic females

Question 13

moss animals

Answer 13

bryozoans

Question 14

bryozoa moss-like colonies form where?

Answer 14

stems of plants or on rocks

Question 15

what are members of a colony called?

Answer 15

zooids

Question 16

zooids secrete exoskeletons which they live in called what?

Answer 16

zoecium

Question 17

what is a zooid’s chamber, in which they withdraw to, called?

Answer 17

operculum

Question 18

digestion in bryozoa

Answer 18

• beings extracellularly in stomach
• ends intracellularly in intestine
• complete gut system

Question 19

difference between coral and bryozoa?

Answer 19

coral- incomplete gut

bryozoa- complete gut

Question 20

heterozooids

Answer 20

non-feeding members of a ectoproct colony

Question 21

aviculariums

Answer 21

modified zooids that resemble bird beaks

-snap small invading organisms

Question 22

vibraculum

Answer 22

long bristles that sweep away foreign particles

Question 23

ectoprocta reproduction

Answer 23

• some hermaphroditic

- most brood their eggs

Question 24

where does brooding occur in ectoprocta?

Answer 24

in the coelom or external chamber

Question 25

polyembryony

Answer 25

embryos proliferating asexually from the initial embryo

Question 26

larva of non brooding species

Answer 26

functional gut and swim for a few months

Question 27

larva of brooding species

Answer 27

do not feed and settle after brief free swim

Question 28

functional gut

Answer 28

need to feed themselves

Question 29

where do the larvae of ectoprocta attach to become adults (2)

Answer 29

• first the substratum

- then the metamorphose

Question 30

ancestrula

Answer 30

new colonies bringing from a single metamorphosed primary zooid

Question 31

hard, resistant capsules containing a mass of germinative cells

Answer 31

statoblasts

-allows continuation of the colony lineage

Question 32

proboscis

Answer 32

used to detect prey

Question 33

rhynchocoel

Answer 33

cavity nemerteans use for hiding

Question 34

what type of digestive system does a nemertean have?

Answer 34

complete

Question 35

nemerteans circulatory system

Answer 35

• true

- irregular blood flow

Question 36

protonephridia

Answer 36

used to achieve true excretory role of removing waste