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Zoology Laboratory > LAB 2 - ANIMAL CLASSIFICATION > Flashcards

LAB 2 - ANIMAL CLASSIFICATION Flashcards

1
Q

Lophotrochozoans are characterized by

A

Gradual increase in body mass without molting

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2
Q

Ecdysozoans are characterized by:

A

Molting their exoskeleton

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3
Q

Echinoderms are characterized by:

A

Endoskeletal spines and radial symmetry

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4
Q

Flatworms are characterized by all of the following EXCEPT:
a. Bilateral symmetry
b. Presence of ectoderm, endoderm, and mesoderm
c. Coelom
d. Saclike digestive cavity

A

c. Coelom

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5
Q

What mollusk group has a one-part shell?

A

Gastropods

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6
Q

Cephalopods are known for

A

Jet propulsion

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7
Q

Bivalves, such as clams, are characterized by

A

Muscular foot and two-part shell

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8
Q

Annelids are segmented worms with segmentation seen

a. Externally only
b. Internally only
c. Both externally and internally

A

c. Both externally and internally

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9
Q

What is a characteristic feature of polychaetes

A

Many setae for locomotion

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10
Q

Earthworms are known for?

A

Lack of a well-defined head region

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11
Q

Leeches feed by

A

Sucking blood

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12
Q

Which group of lophotrochozoans has a mantle cavity for gas exchange?

A

Gastropods

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13
Q

Roundworms are known for having

A

A complete digestive tract

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14
Q

Which group of arthropods has a head bearing compound eyes, antennae, and mouthparts?

A

Crustaceans

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15
Q

Spiders, scorpions, ticks, and mites belong to the group of:

A

Insects

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16
Q

Crustaceans are characterized by

A

Five pairs of walking legs

17
Q

Insects have adaptations for:
a. Marine life
b. Filter feeding
c. Terrestrial life

A

c. Terrestrial life

18
Q

Which group of arthropods is known for spinning silk

A

Arachnids

19
Q

How many pairs of legs do insects typically have?

A

Three

20
Q

Arachnids are characterized by

A

Silk-spinning ability

21
Q

What feature contributes to the success of arthropods?

A

flexible exoskeleton

22
Q

Vertebrate chordates include all of the following EXCEPT:
a. Fishes
b. Amphibians
c. Reptiles
d. Invertebrates

A

d. Invertebrates

23
Q

Cartilaginous fishes, represented by sharks and rays, have a skeleton made of:

A

Cartilage

24
Q

Amphibians evolved from ancient?

A

lobe-finned fishes

25
Q

Reptiles lay a shelled egg containing extraembryonic membranes, including?

A

Amnion

26
Q

Birds are feathered reptiles that maintain a constant body temperature, also known as

A

endothermic

27
Q

Mammals are amniotes that have:

A

Mammary Glands

28
Q

Placental mammals retain offspring inside the uterus until birth, while monotremes:
a. Lay eggs
b. Have a pouch for offspring
c. Give live birth
d. Nurse their young externally

A

a. Lay eggs

Zoology Laboratory (6 decks)

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