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Biology 124 Lab > Exam #2 > Flashcards

Exam #2 Flashcards

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1
Q

General Characteristics of Kingdom Animalia

A

Eukaryotic; heterotrophic; glycogen; sexual reproduction; no cell wall

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2
Q

Parazoa (sponges) Eumetazoa (all others)

A

2 subkingdoms of Kingdom Animalia

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3
Q

No organ systems; sac body plan; asymmetrical; hermaphroditic; filter feeders (choanocytes/amoebocytes); sexual/asexual (budding); ciliated larvae

A

Phylum Porifera

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4
Q

Choanocytes (collar cells)

A

Cells that have flagella that drive water past cell

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5
Q

Amoebocytes

A

Cells that wander the mesophyl (jelly-layer between epidermal cells & choanocytes); stores & distributes food from choanocytes

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6
Q

Classification of sponges is based on ________ (produced by amoebocytes)

A

Spicules

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7
Q

Class Calcarea
Class Hexactinellida
Class Demospongiae

A

Calcium carbonate spicules
Silica spicules
Spongin spicules

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8
Q

Definte tissues; radial symmetry; gastrovascular cavity; extracellular digestion; alternate betweeen polyp (sessile) and medusa (free swimming) stage

A

Phylum Cnidaria

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9
Q

Jellylike layer between epidermis & gastrodermis

A

Mesoglea (Cnidaria)

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10
Q

Noncentralized arrangement of neurons in Cnidaria

A

Nerve Nets

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11
Q

Specialized cells unique to phylum Cnidaria that contain a whip-like stinging barb called _________

A

Cnidocytes; nematocyst

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12
Q

Only exists as a polyp and is solitary

A

Hydra (Class Hydrozoa)

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13
Q

Polyp is main stage; medusa for sexual reproduction

A

Class Hydrozoa

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14
Q

Hydrozoan larva

A

Planula

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15
Q

True jellyfish; medusa dominant

A

Class Scyphozoa

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16
Q

Box jellies & sea wasps; sea turtles are predators

A

Class Cubozoa

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17
Q

One of the most deadliest organisms; sea wasp

A

Chironex fleckeri (Class Cubuzoa)

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18
Q

Polyp only stage; corals & sea anemones; zooxanthellae

A

Class Anthozoa

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19
Q

Comb jellies; radial symmetry; cilia for locomotion

A

Phylum Ctenophora

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20
Q

Blastophore = mouth; determinate/spiral cleavage; mesoderm arises from endoderm; coelom arises from split in solid mesoderm

A

Protostomes

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21
Q

Blastopore = anus; indeterminate/radial cleavage; mesoderm arises from endoderm as a pair of pouches from endoderm wall; coelom arises a cavity

A

Deuterostomes

22
Q

No body cavity between gut and outer covering

A

Acoelomate

23
Q

Has a body cavity, but not completely lined with mesoderm

A

Pseudocoelomate

24
Q

Has a body cavity completely lined with mesoderm

A

Coelomate

25
Q

Flatworms; branched gastrovascular cavity; mesoderm ( 3 germ layers); ganglia nerve chords; acoelomate; protostome

A

Phylum Platyhelminthes

26
Q

Flukes; parasites

A

Class Trematoda

27
Q

Tapeworms; scolex (head region); proglottids; 2 or more hosts

A

Class Cestoda

28
Q

Rotifers; Cell constant; no cell replacement; mastax; parthenogenesis; bilateral symmetry; 3 germ layers; tube-in-tube

A

Phylum Rotifera

29
Q

Eggs develop without being fertilized by sperm

A

Parthenogenesis

30
Q

Grinding organ (Phylum Rotifera)

A

Mastax

31
Q

Round worms; longitudinal muscles; bilateral; 3 germ layers; tube-in-tube
Hookworms; pin worms; filaria worms

A

Phylum Nematoda

32
Q

Obtained from undercooked pork; larva encyst in muscle

A

Trichinella (Phylum Nematoda)

33
Q

Ribbon worms; bilateral; muscles; 3 germ layers;

A

Phylum Nemertea

34
Q

5 Characteristics common to most Mollusks

A 
Mantle
Calcium carbonate shell
Visceral mass
Radula
Muscular foot
35
Q

Fold of tissue that drapes over the visceral mass

A

Mantle (Mollusks)

36
Q

A mass containing most of the internal organs

A

Visceral mass

37
Q

A “conveyer belt” of teeth used to scrape up food

A

Radula

38
Q

2nd largest phyla; open circulatory system; all major organ systems; bilateral; tube-in-tube; 3 germ layers; organs present

A

Phylum Mollusca

39
Q

Chitons; shell segmented (animals is NOT); found in intertidal zone

A

Class Polyplacophora

40
Q

Mantle is highly vascularized for respiratoin in terrestrial forms; torsion (180 twist in organs during development); snails, whelks, slugs, & nudibranchs
Snails

A

Class Gastropoda

41
Q

No radula; filter feeders; shell divided into 2 halves; clams, oysters, scallops, & mussels

A

Class Bivalvia

42
Q

Toothshells; look like canine tooth

A

Class Scaphopoda

43
Q

Only Mollusk with a closed circulatory system; foot is modified into a siphon; capable of learning; camera type eye; octopus; squid, chambered nautilus; cuttlefish

A

Class Cephalopoda

44
Q

Shell reduced; 10 appendages; head region more triangular

A

Squid

45
Q

Shell absent, 8 appendages, head region round

A

Octopus

46
Q

Segmented worms; distinct organ in each segment; circular & longitudinal muscles; closed circulatory system; hemoglobin; hydrostatic skeleton; 3 germ layers; bilateral symmetry; tube-in-tube;

A

Phylum Annelida

47
Q

Earthworms; improve soil texture; hermaphroditic

A

Class Oligochaeta (Phylum Annelida)

48
Q

Marine worms and fan worms; parapodia (highly vascularized appendages) used for locomotion and gas exchange

A

Class Polychaeta (Phylum Annelida)

49
Q

Leeches; parasitic or carnivores; suckers on both ends; fresh water habitat; some feed on blood

A

Class Hirudinea (Phylum Annelida)

50
Q

1) Dissolve hole in skin
2) Secrete anesthetic
3) secrete hirudin (blood anticoagulant)

A

How leeches feed on blood

51
Q

Velvet worm; Peripatus (organism); internal segmentation & duplicate organs’ no joint legs; jaws derived from appendages; open circulatory system; respiratory system; cuticle from chitin; bilateral

A

Grouping Onychophora

52
Q

Largest animal phyla; jointed appendages; modified legs; chitin exoskeleton (allows attachment of muscles); molt; fused segments; open circulatory system; bilateral;

A

Phylum Arthropoda

Biology 124 Lab (3 decks)

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