Download presentation
Presentation is loading. Please wait.
1
BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I
2
Which phyla did we study in class? And what genera represented these phyla?
3
Cnidaria Hydra sp.
4
Platyhelminthe Dugesia sp.
5
Mollusca Venus sp.
6
Annelida Lumbricus sp.
7
What phylum does this organism belong to? What genus does this organism belong to? Which life form is represented here? What is the other life form?
8
Cnidaria Hydra Polyp (sedentary) Medusa (free-swimming)
9
Other types of organisms that represent the phylum Cnidaria: Jellyfish Sea anemones Corals Hydrozoans
10
What symmetry do cnidarians show?
11
Radial symmetry
12
What type of body plan do cnidarians show?
13
Diploblasty Two germ layers: Ectoderm Endoerm
14
What internal space acts as the central digestive cavity?
15
Gastrovascular cavity Is the gastrovascular cavity a complete or an incomplete gut?
16
The gastrovascular cavity is an incomplete (or blind) gut
17
Identify:
18
Gastrovascular cavity
19
Identify:
20
Tentacles What are the stinging cells of the tentacles called?
21
Nematocysts Used to paralyze and entangle prey The tentacles push food through the mouth opening
22
Identify:
23
Mouth
24
How do members of the genus Hydra reproduce?
25
Asexually and sexually (hermaphroditic) What is the asexual method called?
26
Budding Note that budding occurs from the gastrovascular cavity
27
Identify: Tissue What germ layer is it derived from?
28
Epidermis Derived from ectoderm
29
Identify: Tissue What germ layer is it derived from?
30
Gastrodermis Derived from endoderm
31
What acellular substance joins the tissue tissues?
32
Mesoglea
33
Is this Hydra a male or female? What is the structure that produces this type of gamete called?
34
Male (note the multiple spermaries) Testes (spermaries)
35
Is this Hydra a male or female? What is the structure that produces this type of gamete called?
36
Female (note that only one ovary is present – as opposed to multiple spermaries in males) Ovary
37
Identify:
38
Tentacles (The outer layer)
39
Identify: Tentacles Epidermis The middle layer
40
Identify: Tentacles Epidermis Mesoglea
41
Identify: Tentacles Epidermis Mesoglea Flagellum
42
Identify: Tentacles Epidermis Mesoglea Mouth Flagellum The inner layer
43
Identify: Tentacles Epidermis Mesoglea Mouth Flagellum Gastrodemis
44
Identify: Tentacles Epidermis Mesoglea Mouth Flagellum Gastrodemis Gastrovascular Cavity
45
Identify:
46
Tentacles (Containing nematocysts)
47
Identify: Mouth Tentacles (Containing nematocysts)
48
Identify: Mouth Tentacles (Containing nematocysts) Asexual bud
49
What phylum does this organism belong to? What genus does this organism belong to?
50
Platyhelminthe Degusia sp. Free-living flatworms AKA planarians
51
What type of symmetry does Degusia sp. show?
52
Bilateral symmetry
53
What is the term that is used to describe the evolutionary milestone that resulted in the anterior concentration of nervous tissue, in other words the presence of a head?
54
Cephalization
55
What body type does Degusia show?
56
Acoelomate
57
Identify: Structure Purpose
58
Auricle (ear-like structure) Contains a variety of sensor cells, chiefly of touch and chemical detection
59
Identify: Structure Purpose
60
Eye spots Detect light
61
Identify: Structure Purpose
62
Pharynx Feeding structure
63
Identify:
64
Ventral nerve Cords
65
Identify: Ventral nerve Cords Pharynx
66
Identify: Ventral nerve Cords Pharynx Gastrovascular Cavity
67
Identify: Ventral nerve Cords Pharynx Gastrovascular Cavity Eyespots
68
Identify: Ventral nerve Cords Pharynx Gastrovascular Cavity Eyespots Ganglia
69
Identify: Ventral nerve Cords Pharynx Gastrovascular Cavity Eyespots Ganglia Auricles
70
Identify:
71
Pharyngeal chamber
72
Identify: Pharyngeal chamber Pharynx
73
Identify: Pharyngeal chamber Pharynx Cilia
74
Identify: Pharyngeal chamber Pharynx Cilia Lateral branch of gut
75
Identify: Pharyngeal chamber Pharynx Cilia Lateral branch of gut Endoderm
76
Identify: Pharyngeal chamber Pharynx Cilia Lateral branch of gut Endoderm Mesoderm
77
Identify: Pharyngeal chamber Pharynx Cilia Lateral branch of gut Endoderm Mesoderm Ectoderm
78
What phylum does this specimen belong to? What genera represented this phylum?
79
Mollusca Venus sp.
80
Most mollusks share what four characteristic features?
81
1) Foot – locomotion and 2) Visceral mass – housing of organs 3) Mantle – Secretes the shell 4) Shell – protection (CaCO3 which is made of twp parts, called valves)
82
What type of symmetry does Venus exhibit?
83
Bilateral symmetry
84
What body type does Venus exhibit?
85
Triploblastly
86
What type of body cavity does Venus exhibit?
87
Coelomate
88
Determine the anatomical positions:
89
Dorsal
90
Determine the anatomical positions: Dorsal PosteriorPosterior
91
Determine the anatomical positions: Dorsal PosteriorPosterior Ventral
92
Determine the anatomical positions: Dorsal PosteriorPosterior Ventral AnteriorAnterior
93
Identify:
94
Pericardium
95
Identify: Pericardium Posterior adductor muscle
96
Identify: Pericardium Posterior adductor muscle Mantle
97
Identify: Pericardium Posterior adductor muscle Mantle Labial palp (the mouth is located here)
98
Identify: Pericardium Posterior adductor muscle Mantle Labial palp (the mouth is located here) Anterior Adductor muscle
99
Identify: Note that this image is flipped, so the anterior is the right side, and the posterior is the left side. You can see this by noting the position of the umbo.
100
Umbo
101
Identify: Note that this image is flipped, so the anterior is the right side, and the posterior is the left side. You can see this by noting the position of the umbo. Umbo Mantle
102
Identify: Note that this image is flipped, so the anterior is the right side, and the posterior is the left side. You can see this by noting the position of the umbo. Umbo Mantle Posterior Adductor muscle
103
Identify: Note that this image is flipped, so the anterior is the right side, and the posterior is the left side. You can see this by noting the position of the umbo. Umbo Mantle Anterior Adductor muscle
104
Identify: Note that this image is flipped, so the anterior is the right side, and the posterior is the left side. You can see this by noting the position of the umbo. Umbo Mantle Anterior Adductor muscle Foot
105
Identify: (The green substance)
106
Identify: (The yellow substance) Digestive gland
107
Identify: Digestive gland Gonads
108
Identify: Digestive gland Gonads Gills
109
Identify: Digestive gland Gonads Visceral mass Gills
110
Identify: Digestive gland Gonads Gills Visceral mass Foot
111
Identify: Digestive gland Gonads Gills Visceral mass Foot Mantle
112
What phylum does this animal belong to? What genus represented this phylum?
113
Annelida Lumbricus sp.
114
What type of symmetry does Lumbrius demonstate?
115
Bilateral symmetry
116
What body type does Lumbricus show?
117
Triploblasty
118
How does Lumbricus reproduce?
119
What type of body cavity does Lumbricus have?
120
Coelomate
121
Sexually; Lumbricus is a hermaphroditic, and transfer sperm when mating (they do not self-fertilize)
122
Identify:
123
Prostomium
124
Identify: Mouth Prostomium
125
Identify: Mouth Prostomium Peristomium
126
Identify: Mouth Prostomium Peristomium Chaetae
127
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles
128
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles Female gonopore
129
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles Female gonopore Male gonopore
130
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles Female gonopore Male gonopore Sperm groove
131
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles Female gonopore Male gonopore Sperm groove Genital chaetae
132
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles Female gonopore Male gonopore Sperm groove Genital chaetae Clitellum
133
Identify: Mouth Prostomium Peristomium Chaetae Seminal receptacles Female gonopore Male gonopore Sperm groove Genital chaetae Clitellum Tubercle
134
Identify:
136
Pharynx
137
Identify:
Similar presentations
