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Organism 2 (AEBI 211-LAB) > Lab 5 > Flashcards

Lab 5 Flashcards

1
Q

True or false.

All Chordates are vertebrates?

A

False

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2
Q

Which specimens from Lab 5 are not vertebrates?

A

Tunicates (sea squirts)

Lancelet

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3
Q

Name a specimen from Lab 5 that is jawless.

A

Lampreys

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4
Q

Which organism from Lab 5 is parasitic?

A

Lampreys

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5
Q

What is the role of the velum?

A

A large pair of flaps that uses muscular action to create water currents over the gills.

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6
Q

What is the function of the endostyle?

A

Secretes mucus into the pharynx and is used to trap food particles.

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7
Q

Which type of scales are typical of class Chondrichthyes?

A

Placoid scales.

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8
Q

Which term refers to the electromagnetic sensors in a shark?

A

Ampullae of Lorenzini

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9
Q

What is the term for the gill cover in bony fishes?

A

Operculum

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10
Q

What can be sensed by the lateral line?

A

Pores detect a change in the water current, allowing the shark to detect moving prey even in pitch darkness.

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11
Q

What is the role of the pyloric caeca?

A

Secrete digestive enzymes into the stomach.

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12
Q

Which structure allows the perch to maintain neutral buoyancy?

A

Swim bladder

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13
Q

How many chambers are found in the perch heart?

A

Two

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14
Q

What is the term for the third transparent eyelid in a frog?

A

Nictitating membrane

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15
Q

How many chambers are found in a frog heart?

A

Three

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16
Q

How many chambers are found in the mammalian heart?

A

Four

17
Q

Name a specimen from Lab 5 that uses negative pressure breathing.

A

Fetal pig and rat

18
Q

What are the components of the axial skeleton? (name three)

A

Skull, vertebrae, ribs

19
Q

What are the components of the appendicular skeleton? (name three)

A

Pectoral, pelvic, limb bones

20
Q

What are scutes?

A

Homologous to dermal scales in other reptiles. They cover the turtle’s shell.

Organism 2 (AEBI 211-LAB) (5 decks)

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