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Zoology > Zoology Lab Exam 2 > Flashcards

Zoology Lab Exam 2 Flashcards

1
Q

Multicellular animals are classified in the clade…

A

Metazoa

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2
Q

Metazoa falls under the level of the Kingdom…

A

Animalia

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3
Q

Kingdom animalia falls under the Domain…

A

Eukarya

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4
Q

What is a more tradition phylogeny based on animal morphology?

A

Embryology

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5
Q

What is a more modern phylogeny based on animal morphology?

A

Molecular (genetic) evidence

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6
Q

Sponges were formerly phylum…

A

Porifera

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7
Q

Sponges are actually classified in group

A

Parazoa

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8
Q

What does para mean?

A

Beside

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9
Q

What does the group Eumetazoa include?

A

All the other animals

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10
Q

How can we further classify the group Eumetazoa?

A

By physical characteristics

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11
Q

How can we classify by physical characteristics?

A

Symmetry

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12
Q

Radial symmetry

A

Parts arranged around central axis, squid upsidedown

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13
Q

Bilateral symmetry

A

Right and left halves are identical, turtle, dorsal/ventral

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14
Q

What types of symmetry are involved with the number of tissue layers?

A

Radial and Bilateral

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15
Q

What are the three basic tissue types in developing embryos that give rise to all the other structures in the body?

A

Ecto, Meso, Endo

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16
Q

What does dermis mean?

A

Tissue

17
Q

From the clade Bilateria how can we further group?

A

Pattern of embryological development (Protostome(mouth forms from embryonic opening)/Deuterostome(anus forms embryonic opening)

18
Q

Diploblastic

A

Animals with only two tissue layers (endo and ecto)

19
Q

Why are sponges not considered to have those tissue types?

A

That’s why they are grouped beside all these other animals, Parazoa

20
Q

What characters are used by both traditional and modern phylogenies?

A

Tissue layer, embryological development, symmetry

21
Q

What two new groups can protostomes be divided into?

A

Lophotrochozoa and Ecdysozoa

22
Q

What would be placed in the Lophotrochozoa group?

A

phyla Playhelminthes, Annelida, Mollusca
-LARVAL STAGE (trochophore)
&DNA seq shared by all

23
Q

What would be placed in the Ecdysozoa group?

A 
phyla Arthropoda and Nematoda
-MOLTING (ecdysis)
shedding outer body cover
->cuticle of nematodes 
->exoskeleton of arthropods
24
Q

Types of Symmetry

A

Bilateral, Radial, None

25
Q

Types of Tissue

A

Lack of true tissue, triploblastic, Diploblastic

26
Q

Types of Body Cavity (TRIPLOBLASTIC ONLY)

Coelom=space between outer body and digestive cavity/tube

A

Acoelomate- no body cavity, mesoderm fills cavity
Pseudocoelomate- fluid filled cavity BETWEEN ENDoderm lining digestive tube and mesoderm
Eucoelomate(Coelomate)- digestive tube WITHIN layer of MESOderm, mesoderm lines bodycavity

27
Q

What is the digestive track opening?

A

food enters, waste leaves, separate mouth and separate anus (two openings)

28
Q

Types of circulatory system

A

Closed: circulatory fluid CONTAINED within vessels
Open: circulatory fluid FLOWING in coelomic areas

29
Q

Types of habitat

A

Aquatic (Freshwater/marine), Terrestrial

30
Q

Gas Exchange

A

exchange O and CO2 w/ environ
some have specialized structures/organs
some do not

31
Q

Excretion

A

Specialized structures/ organs

32
Q

Locomotion

A

how animal moves around in environment

33
Q

Structural Support

A 
Fluid (hydrostatic skeleton)
Internal Skeleton (endoskeleton)
External Skeleton (exoskeleton)
34
Q

Segmentation

A

some modified for different functions (eg. specialization )

35
Q

Nervous System

A

brain/cord present, arrangment of nerves? any sensory organs/structures? Purpose?

36
Q

What does porifera mean?

A

pore-bearing

Zoology (2 decks)

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