platyhelminthys

Question 1

describe the body plan of a flatworm

Answer 1

bilaterian
tripoblastic
acoelomate

Question 2

what is the excretory system made up of?

Answer 2

ectodermal tubes

Question 3

how do flatworms reproduce?

Answer 3

hermaphorditic

Question 4

what is the protonephridia?

Answer 4

• first kidney

- flame cell

Question 5

what type of brain? what does it include?

Answer 5

rudimentary

• ocellus
• light receptor

Question 6

how are flatworms mobile?

Answer 6

• cilia
• contraction waves of mussels
• work against fluid pressure of body

Question 7

name four big things that flathead are missing?

can be distinguished from other phylums this way

Answer 7

• respiratory system
• blood system
• appendages
• hard skeleton

Question 8

are flatworms carnivores, herbivores, omnivores?

Answer 8

carnivores

Question 9

for reproduction, what is specialized about modern platyhelminthes?

Answer 9

elaborate reproduction
muscular glandular organs
complicated hermaphrodites

Question 10

what are the four classes of platyhemintheys?

Name which are free living and which are parasitic.

Answer 10

Turbellaria : free living
Monogenea: Parasitic
Trematoda: Parasitic
Cestoda: parasitic

Question 11

Turbellaria:

-environment

Answer 11

chiefly aquatic;

-marine

Question 12

turbellaria:

movement

Answer 12

musculature:
-outer circular and inner longitudinal fibres.  diagonal mussels crisscross
-muscular creeping and swimming
-pedal waves
-looping
cilia:
-more ventral than dorsal
-multi-cilliated
-mucous glands

Question 13

rhabdites

Answer 13

rod-like structures in the cells or mucus of turbellarians. defensive mechanism

Question 14

name three methods of reproduction for turbellaria

Answer 14

-regeneration
-clonal reproduction
-sexual reproduction
>hermaphrodites
>hypodermic impregnation

Question 15

describe the unique feature of flatworms that allow them to hunt

Answer 15

spearing by means of an eversible, protrusible pharynx.

Question 16

name the two lifestyle choices for feeding

Answer 16

predators/carnivores

symbionts

Question 17

protonephridia

Answer 17

rapidly beating cilia that propel waste in flatworms, rotifers

Question 18

monogenea are exo or endoparasites? one host or many?

Answer 18

exoparasites, one host

Question 19

what is the posterior attachment organ called for monogenea?

Answer 19

haptors. they include a sucker

Question 20

monogenea have how many bands of cilia? eyes?

Answer 20

3 bands of cilia

1 or 2 pairs of eyes

Question 21

tegument; monogenea

Answer 21

outer body covering of helminthes. unciliated, syncytial.

Question 22

describe a direct life cycle of a helminth

Answer 22

• reproduce within the definitive host
• get fertilized eggs out of host
• contact and recognise a new host
• obtain entrance into new host
• locate appropriate environment within host
• maintain position within host
• withstand anaerobic environments
• avoid digestion or attack
• avoid killing host

Question 23

Cestoda: what are these commonly known as?

Answer 23

tapeworms

Question 24

cestoda:

• exo or endo parasitic?
• what is their attachement organ called?

Answer 24

• endoparasitic

- scolex

Question 25

what are the segments of cestoda called?

Answer 25

proglottids

Question 26

how many ppl worldwide are infected by cestoda?

Answer 26

135 million

Question 27

how many eggs per proglottid for cestoda?

Answer 27

50,000

Question 28

are cestoda male or female?

Answer 28

simultaneous hermaphrodites

Question 29

what body system is absent in cestoda?

Answer 29

digestive tract

Question 30

trematoda tegument

Answer 30

unciliated syncytial

Question 31

what type of life cycle for trematodes?

Answer 31

complex, parasitiszing

Question 32

trematoes endo or exo?

Answer 32

endoparasites

Question 33

are trematodes segmented?

Answer 33

never

Question 34

what two type of flukes (trematodes) cause schistosomiasis?

Answer 34

liverflukes, bloodflukes

Question 35

what is 2nd to malaria for parasite-causing disease?

Answer 35

schistosomiasis

Question 36

how many ppl does schistosomiasis kill per year?

Answer 36

800,000.

2200/day.

Question 37

name the 7 stupid stages of the life cycle of stupid trematodes.

Answer 37

• egg
• miracidium
• sporocyst
• redia
• cercaria
• metacircaria
• adult

Question 38

what stage of a trematodes’s life cycle is eaten by or locates and bores into an intermediate host?

Answer 38

free living ciliated miracidium

Question 39

Clonorchis sinensis

Answer 39

chinese liver fluke