The Smaller Lophotrochozoan Phyla Unit Flashcards

1
Q

What are the characteristics of lophotrochozoans?

A

bilaterally symmetrical, triplobastic, protostomes

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2
Q

Locophore function

A

horseshoe shaped feeding structure that shows evolutionary relationships

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3
Q

How many species are in phylum platyhelminthes?

A

34,000

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4
Q

Are platyhelminthes segmented or unsegmented?

A

unsegmented

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5
Q

What classes are in phylum platyhelminthes?

A

turbellaria, trematoda, monogenea, and cestiodea

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6
Q

How does class turbelleria reproduce sexually and asexually?

A

sexually: monoecious
asexually: transverse fission

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7
Q

Is the phylum platyhelminthes - or + photoreceptive?

A

negative photoreceptive

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8
Q

What is locomotion and how does it move?

A

they are bottom dwellers and they move using cilia and muscular contractions

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9
Q

the class monogenea are what type of parasites?

A

external (means they live on the outside of the body)

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10
Q

what does class trematoda consist of?

A

flukes

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11
Q

what does class cestiodea consist of?

A

tapeworms

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12
Q

how long does it take for summer capsules to hatch?

A

2-3 weeks

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13
Q

how long does it take autumn capsules to hatch?

A

hatch after winter and thick walls keep them from freezing

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14
Q

Do monoecious eggs hatch around the seasons they are called?

A

No, it is not about when they actually hatch in those seasons, it is more about the conditions being favorable

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15
Q

about how many species are in class trematoda?

A

10,000

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16
Q

What does class trematoda feed on?

A

host cells and cell fragments

17
Q

what are the main characteristics of phylum nematoda?

A

bilateral, triploblastic, unsegmented, and pseudocoelomate (partial coloem)

18
Q

What is the difference between a complete digestive tract and an incomplete digestive tract?

A

complete: digestive tract with two openings
incomplete: a digestive cavity with one opening that serves as both the mouth and anus

19
Q

ascaris lumbricodes are otherwise known as

A

intestinal roundworms

20
Q

where does ascaris lumbricodes live?

A

small intestines

21
Q

enterobius vermicularis are otherwise known as

A

pinworms

22
Q

whats the most common type of roundworms in the U.S.?

A

enterobius vermicularis (pinworms)

23
Q

called “the new world hookworm”

A

necator americanus

24
Q

what is the most common parasite in louisiana?

A

necator americanus

25
Q

larva penetrate the skin and makes their way to intestine with which parasite?

A

necator americanus

26
Q

trichenella spiralis is called..

A

the pork worm

27
Q

where does the pork worm live?

A

the small intestines of carnivores and omnivores

28
Q

what is it called when a parasite remain infective for years?

A

trichinosis

29
Q

wuchereria species are called…

A

the filarial worms

30
Q

where do the wuchereria species live/

A

the lymphatic system of humans

31
Q

what is it called with fluid accumulates in the appendages?

A

elephantiasis

32
Q

what do tapeworms lack?

A

a mouth and digestive tract