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Z - BioSci 1223 (S&T) > Ecdysozoa and Echinodermata > Flashcards

Ecdysozoa and Echinodermata Flashcards

1
Q

Describe the symmetry and level of organization of nematoda

A

Bilateral, organ system level

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2
Q

Describe the digestive system of nematoda, including complete/incomplete and type of coelom

A

Complete, pseudo

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3
Q

What clades make up Ecdysozoa?

A

Nematoda and Arthropoda

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4
Q

Describe the musculature and type of circulatory system of nematoda

A

Muscles are all longitudinal, contracting produces thrashing

lack circulatory systems

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5
Q

What is the defining trait of Ecdysozoa?

A

All Ecdysozoans have a cuticle that is shed through ecdysis

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6
Q

How is Trichinella spiralis spread?

A

undercooked pork

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7
Q

How is hookworm spread?

A

leave dirt and enter feet

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8
Q

How are pinworms spread?

A

through contact (eggs are swallowed), cause itching around anus (where the eggs are laid)

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9
Q

How are horsetail worms spread?

A

cause the insects they infect to head to sources of water

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10
Q

How are heartworms spread?

A

transmitted by mosquitoes and treated by arsenic

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11
Q

Describe the digestive system of arthropoda. Include complete/incomplete and coelom type.

A

Complete with coelom

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12
Q

Describe the symmetry and level of organization of arthropods.

A

Bilateral, organ system

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13
Q

Describe the circulatory system of arthropds.

A

Open

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14
Q

What innovations did the arthropods make?

A

Complex eyes, segmented bodies with jointed appendages

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15
Q

What are the three clades in arthropoda?

A

Chelicerata, myriapoda, and pancrustacea

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16
Q

What defines the chelicerata clade?

A

Chelicerae are clawlike feeding appendages

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17
Q

What are some members of the chelicerata clade?

A

Sea spiders, scorpions, ticks, mites and spiders (and horseshoe crabs)

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18
Q

Describe the use of horseshoe crabs in medicine

A

The blood of horseshoe crabs is collected for the amoebocytes, that detect endotoxins in medical applications

19
Q

What are the members of the myriapoda clade? What defines each one?

A

Millipedes- eat decaying leaves and plant matter, two pairs of legs per truck segment

Centipedes- carnivores, one pair of legs per truck segment, poison claws

20
Q

What are some members of the Pancrustacea clade?

A

Lobsters, crayfish, crabs, barnacles, and insects

and Daphnia

21
Q

What are Daphnia?

A

Daphnia are small planktonic crustaceans called water fleas

22
Q

Give three reasons why insects are so numerous and successful

A

Flight allows them to escape predators, find food, and disperse to new habitats

Evolved many types of appendages

Coevolved with flowering plants

23
Q

Describe incomplete metamorphosis

A

Incomplete metamorphosis: young (nymphs) resemble adults, but are smaller and go through a series of molts

24
Q

Describe complete metamorphosis

A

Complete metamorphosis: young go through larval stages that look entirely different from the adult stage

25
Q

Describe the symmetry and level of organization of echinodermata

A

Radial five-part symmetry as adults

Organ system

26
Q

Describe the digestive system of echinodermata. Include complete/incomplete and type of coelom

A

Usually complete gut with coelom

27
Q

Describe the habitat and reproduction of echinodermata

A

All aquatic/marine

Males and females usually separate, sexual reproduction is external

28
Q

Describe the skeleton and water vascular system of echinodermata

A

Epidermis covers endoskeleton of hard CaCO3 plates

Water vascular system -> network of hydraulic canals branching into tube feet that function in locomotion and feeding

29
Q

What five groups make up echinodermata?

A

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, and Holothuroidea

30
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Distinct central disk with radiating arms

A

Asteroidea, Ophiuroidea, Crinoidea

31
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Five rows of tube feet, no arms, have skeleton

A

Echinoidea

32
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Lack spines, reduced endoskeleton, five rows of tube feet

A

Holothuroidea

33
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea?

Sea Lilies and Feather Stars

A

Crinoidea

34
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Feed on bivalves by prying with tube feed and externally digesting them

A

Asteroidea

35
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Spines for protection and locomotion

A

Echinoidea

36
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Can be suspension feeders or predators/savengers

A

Ophiuroidea

37
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea?

Brittle Stars

A

Ophiuroidea

38
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Graze with a jaw-like structure on their underside

A

Echinoidea

39
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea?

Sea Urchins and Sand Dollars

A

Echinoidea

40
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Mainly suspension feeders

A

Crinoidea

41
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Mainly scavengers and carnivores

A

Asteroidea

42
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea?

Sea Stars and Sea Daisies

A

Asteroidea

43
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Attach to substrate with stalk

A

Crinoidea

44
Q

Asteroidea, Ophiuroidea, Echinoidea, Crinoidea, or Holothuroidea? (may be more than one)

Filter through sand

A

Holothuroidea

Z - BioSci 1223 (S&T) (16 decks)

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