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Biology 2 > Lecture 14-Invertebrates I > Flashcards

Lecture 14-Invertebrates I Flashcards

1
Q

Animals that are NOT chordates and lack backbone.

A

Invertebrates

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2
Q

34/35 phyla are __________.

A

Invertebrates

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3
Q

_____% of animal species are invertebrates.

A

95%

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4
Q

85% of animals are __________.

A

Arthropods

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5
Q

_____% of animal species are insects.

A

75%

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6
Q

Primitive animals were __________ and __________ with no true tissues (e.g. No muscle, nervous system, digestive system, etc).

A

Asymmetric and diploblastic

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7
Q

Sponges are in what phylum?

A

Porifera

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8
Q

Organisms in the phylum __________ are asymmetric.

A

Porifera

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9
Q

Organisms in the phylum Porifera are __________ and __________.

A

Asymmetric, diploblastic

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10
Q

Organisms in the phylum __________ have no true organs.

A

Porifera

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11
Q

__________ are made up of calcium carbonate or silica. They provide structural support.

A

Spicules

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12
Q

Collar cells

A

Choanocytes

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13
Q

The phylum Porifera has unique structures and cells, such as __________, __________, and __________.

A

Spicules, choanocytes, and amoebocytes

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14
Q

Animals with true tissues; all animals except sponges.

A

Eumetazoans

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15
Q

First eumetazoans have a rudimentary __________ and __________ system.

A

Nervous, digestive

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16
Q

First eumetazoans have __________ tissues and __________ symmetry.

A

Contractile, radial

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17
Q

Corals, jellyfish, and hydras are examples of:

A

Cnidarians

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18
Q

Two distinct body plans of the Cnidarians are:

A

The polyp and the medusa

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19
Q

Cnidarians are __________ symmetric and _________.

A

Radially, diploblastic

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20
Q

The __________ is mobile.

A

Medusa

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21
Q

The __________ is sessile.

A

Polyp

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22
Q

Cnidarians have a __________ digestive tract.

A

Rudimentary

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23
Q

A Cnidarian’s circulatory system is called the:

A

Gastrovascular cavity

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24
Q

A Cnidarian’s __________ __________ functions as both the digestive and the circulatory system.

A

Gastrovascular cavity

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25
The Cnidarian's nervous system is made up of a __________ and __________.
Nerve net, ocili
26
Cnidarians have __________ structures.
Muscle-like
27
Cnidocytes contain __________.
Nematocysts
28
__________ means "stinging nettles".
Cnidos
29
__________ do not have central nervous systems.
Cnidarians
30
The three major bilateral animal groups are:
Deuterostomes, Lophotrochozoa,Ecdysozoa
31
Animals that molt an exoskeleton.
Ecdysozoa
32
In __________, there is a pocket between the mesoderm and endoderm.
Pseudocoelmates
33
In __________, the mesoderm completely fills up the space.
Acoelomates
34
In an __________, there is "no cavity".
Acoelomate
35
In __________, there are fluid-filled pockets.
Coelomates
36
Evolution of __________ tissues allows evolution of coelom.
Triploblastic
37
Platyhelminthes, Rotifera, Mollusca, and Annelida make up this bilateral animal group:
Lophotrochozoa
38
Flatworms, tapeworms, flukes, and planeria make up this phylum.
Platyhelminthes
39
Platyhelminthes have __________ guts.
Incomplete
40
__________ don't have circulatory systems.
Platyhelminthes
41
Platyhelminthes have __________ symmetry.
Bilateral
42
Platyhelminthes have __________ tissue layers.
Triploblastic
43
Are Platyhelminthes acoelomates, coelomates, or pseudocoelmates?
Acoelomates
44
Evolutionary trend that concentrates nervous tissue to one end.
Cephalization
45
Cephalization is found in __________.
Platyhelminthes
46
Platyhelminthes can be free swimming or __________.
Parasitic
47
Are humans acoelomates, coelomates, or pseudocoelmates?
Coelomates
48
Having 2 penises.
Hempharalitic
49
This phylum is known as the "wheel bearers".
Rotifera
50
Organisms in the phylum Rotifera have __________ guts.
Complete
51
Do organisms in the phylum Rotifera have circulatory systems?
No
52
Ciliated disks for feeding.
Corona
53
Organisms in the phylum Rotifera have __________.
Corona
54
Organisms in the phylum Rotifera are __________ (asexual).
Parthenogenetic
55
Most organisms in the phylum Rotifera are __________. However, some species produce non-feeding males. This is referred to as __________
Asexual, "shuffling the deck"
56
The __________ __________ separates the mouth and anus.
Alimentary canal
57
3 main parts of the phylum Mollusca:
Mantle, foot, visceral mass
58
Feeding apparatus used by the phylum Mollusca.
Radula
59
There are ranges for cephalization and nervous systems in organisms in the phylum:
Mollusca
60
Some, but not all, organisms in the phylum Mollusca have a __________ __________.
Calcium carbonate shell
61
A __________ is a unique feeding apparatus which acts like a conveyer belt. It scrapes food into the mouth.
Radula
62
The 4 classes of Mollusca are:
Polyplacophores, Gastropods, Bivalves, and Cephalopods
63
__________ are also known as chitons.
Polyplacophores
64
Polyplacophores have _____ plates, live on __________ __________, and scrape __________.
8, intertidal rocks, algae
65
Most __________ have spiraled shells.
Gastropods
66
Snails, conchs, and whelks are examples of __________.
Gastropods
67
180 degree twisting if the visceral mass is called _________.
Torsion
68
Torsion is found in __________.
Gastropods
69
Clams, oysters, mussels, and scallops are examples of __________.
Bivalves
70
Bivalves have __________ shells and __________ muscles.
Hinged, adductor
71
Squid and octopi are examples of __________.
Cephalopods
72
__________ means "head-foot".
Cephalopoda
73
Cephalopods have little to no __________.
Shell
74
The only cephalopod that has a shell is the __________.
Nautilus
75
Cephalopods are active __________.
Hunters
76
This phylum exhibits learning and complex behavior.
Cephalopoda
77
Segmented worms are in the phylum __________.
Annelida
78
Organisms in the phylum Annelida have __________ guts.
Complete
79
Organisms in the phylum Annelida have __________ circulatory systems.
Closed
80
Organisms in the phylum Annelida show __________ cephalization.
Some
81
Some organisms in the phylum Annelida possess __________.
Parapodia
82
Lateral feet (foot-like projections).
Parapodia

Biology 2 (32 decks)

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