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Bio 121 Lab > Lab 8 > Flashcards

Lab 8 Flashcards

1
Q

Echinoderms

A

Marine animals with an endoskeleton consisting of calcareous plates and spines within their skin

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2
Q

what kind of symmetry do echinoderms have

A

Pentaradial Symmetry

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3
Q

Pentaradial Symmetry

A

With five arms radiating from a central disc

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4
Q

body plan is

A

Triploblastic coelomate

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5
Q

Digestive system of Echinoderms is

A

Tubular Digestive tracts

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6
Q

Unique structural feature of Echinoderms

A

Have a water vascular System

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7
Q

Water vascular system

A

Provides the forces for locomotion and Feeding

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8
Q

Explain the water vascular system

A

Network of canals that extend into each arm and connect to many tiny tube with suckers

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9
Q

Pisaster

A

Domain: Eukarya
Kingdom: Animilia
Subkingdom: Eumetazoa
Phylum: Echinodermata

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10
Q
A
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11
Q

echnioderms

A

marine animals with an endoskeleton

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12
Q

what kind of symmetry do echinoderms have

A

pentaradial symmertry

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13
Q

Pentaradial Symmetry

A

Five arms radiating from a central disc

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14
Q

What kind of bodyplan do echinoderms have

A

Triploblastic coelomate

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15
Q

What kind of digestive tract do echinoderms have

A

Tubular Digestive Tract

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16
Q

What kind of vascular system do echinoderms have

A

Water vascular system

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17
Q

Pisaster

A

Domain: Eukarya
Kingdom: Animilia
Subkingdom: Eumetazoa
Phylum: Echinodermata

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18
Q

What is water vascular system

A

Provides the forces necessary for locomotion and feeding

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19
Q

Habitat of Picaster

A

cold water species
Found in the northwest Pacific Ocean

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20
Q

What does the picaster feed on

A

mussels, chitons, snails and barnacles

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21
Q

How many arms does the star fish have

A

5

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22
Q

What are the 5 arms attached to

A

central disc

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23
Q

Mandreporite

A

Small light coloured spot on the top surface
It allows water to move in or out of the starfish to keep the pressure within the water vascular system the same as the external environment

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24
Q

Grooves

A

on the lower surface

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25
Q

What’s within the grooves

A

Tube feet

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26
Q

Tube feet

A

Site of Gas exchange and associated with muscles and nerve fibres which allows the starfish to move and manipulate food

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27
Q

Red eye spot

A

Sensitive to light

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28
Q

Branchiae

A

Allows for gas exchange

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29
Q

Pedicellariae

A

Tiny pincers located on the flexible stalks, which clean and protect the surface of starfish

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30
Q

Two kinds of stomachs of Picaster

A

Pyloric Stomach
Cardiac stomach

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31
Q

where is pyloric stomach located

A

On top of the cardiac stomach

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32
Q

how does picaster eat

A

Once the starfish used its powerful tube feet to force open the shells of the prey, the cardiac stomach is everted out of the body to engulf the soft tissues of the prey

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33
Q

Two functions of pyloric stomach

A
  1. secrete enzymes into pyloric stomach where digestion occurs
  2. Serve as a storage site for digested food material
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34
Q

Where does digestion occur in picaster

A

Pyloric Stomach

35
Q

Ampullae

A

Part of the water vascular system
Each ampulla is attached to one tube foot

36
Q

Friends of Picaster

A

Sea Cucumber

37
Q

Symmetry of Phylum Chordata

A

Bilateral Symmetry

38
Q

Body plan of Chordata

A

Triploblastic coelomate

39
Q

Two groups of Chordata

A

Invertebrate chordates
Vertebrate chordates

40
Q

Invertebrate Chordata

A

A relatively small group of animals within lack a backbone or vertebral column

41
Q

Vertebrate Chordata

A

Large group of animals which have a bone

42
Q

Vertebrates Includes 6 groups

A

Chondrichytes (Cartilaginous Fish)
Osteichthyes (Bony Fish)
Amphibia
Reptilia
Aves (Birds)
Mammalia (Mammals)

43
Q

All chordates have

A

Notochord
Hollow Dorsal nerve cord
Pharyngeal gill slits
Post anal tail

44
Q

Perca

A

Domain: Eukarya
Kingdom: Animalia
Subkingdom: Eumetazoa
Phylum: Chordata

45
Q

Habitat of perca

A

Fresh water and marine environments

46
Q

Body plan of Perca

A

Bilateral Symmetry

47
Q

what is perca covered by

A

Scales

48
Q

Scales

A

For protection
Secretes mucus onto the surface of the body. Protects the skin and eases the passage of the fish through the water

49
Q

Mouth has _________

A

Upper and lower jaws to engulf the prey

50
Q

Seeing organs of Perca

A

Eyes for vision and internal ears for balance and hearing
has 2 pairs of nostrils

51
Q

What detects chemical changes in water

A

olfactory sac

52
Q

Movement of water through of nose of perca

A

Water moves into the anterior pair of nostrils - Olfactory sac (Chemical detection) and out through the posterior pair of nostrils

53
Q

How many unpaired fins does perca have

A

4

54
Q

4 unpaired fins of perca

A

2 dorsal
1 anal
1 caudal

55
Q

operculum of perca

A

Protects the gills

56
Q

Swim bladder

A

Develops embryologically as an outpushing from the pharynx. It helps the fish to get oxygen from the air instead of water

57
Q

Oesophagus

A

Tube runs through perca

58
Q

two types of stomachs of perca

A

Cardiac Stomach
Pyloric stomach

59
Q

Chemical digestion occurs at

A

Pyloric stomach

60
Q

spleen

A

Protection and storage of blood cells

61
Q

Male percas have

A

2 elongate testes

62
Q

Female percas

A

single ovary

63
Q

What collects deoxygenated blood in the perca

A

Sinus venosus

64
Q

Where does blood oxygenation occur

A

At gills

65
Q

Steps of circulatory system of perca

A
  1. Deoxygenated blood recieved at Sinus Venosus
  2. Blood moves into atrium
  3. and then to the ventricle
  4. Blood is pumped into an expanded artery called bulbus arteriosus which narrows to ventral aorta
  5. Blood reaches the gills where its oxygenated
66
Q

What takes oxygenated blood from gills to rest of the body

A

Dorsal Aorta

67
Q

What kind of movement does perca use

A

Undulatory swimming
Uses Axial locomotion

68
Q

What is locomotion controlled by in perca

A

Spinal cord

69
Q

Friends of perca

A

Shark

70
Q

The first land vertebrates

A

Amphibians

71
Q

Fish movement

A

Axial locomotion

72
Q

Use of limbs in locomotion

A

Appendicular locomotion

73
Q

Aquatic respiration occurs at

A

Gills

74
Q

Land respiration

A

Lungs

75
Q

How does the skin stay moist

A

Mucous glands
Large blood vessels: Important respiratory organ

76
Q

Epidermis of reptiles has

A

Stratum corneum

77
Q

Stratum Corneum

A

forms a waterproof outer boundary for the epidermis
Overlapping scales are Developed from the epidermis further preventing water loss

78
Q

In most fish fertilization is

A

External

79
Q

Major evolution of reproduction on land

A

Amniotic shelled egg

80
Q

Amniotic shelled egg

A

The egg freed reptiles and birds from their dependence on water for fertilization

81
Q

4 chambers of mammalia heart

A

Two atria
Two ventricles

82
Q

Pathway of blood through the circulatory system

A

Superior/inferior vena cava - Right Atrium - (Triscuspid valve)- Right atrium - Pulmonary Artery - Lungs - (Pulmonary veins) - Left Atrium - (Mitral Valve) - Left ventricle - (Aortic valve) - aorta

83
Q

Backflow of the heart is prevented by

A

Pulmonary Valve

84
Q
A

Bio 121 Lab (6 decks)

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