Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Zoology > Unit 3 > Flashcards

Unit 3 Flashcards

(55 cards)

Start Studying
1
Q

Compare/Contrast the cleavage pattern of a protostome and a deuterostome

A

Protostome: Spiral Cleavage

Deuterostome: Radial Cleavage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Compare/Contrast the cell fate of a protostome and a deuterostome

A

Protostome: Determinate developement (cell fate set very early on)

Deuterostome: Inderterminate developement (cell fate is not set until later on)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Compare/Contrast blastopores for protostomes and deuterostomes

A

Protostome: The blastopore (depression) becomes the mouth, forming mouth to anus

Deuterostome: The blastopore (depression) becomes the anus, forming anus to mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Compare/Contrast the coelom formation in protostomes and deuterostomes

A

Protostome: Schizocoelous- Body cavity is formed when a tissue splits open and a new space is created

Deuterostomes: Enterocoelous; Body cavity is a pocket (bubble) that develops from a digestive tract.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Label this Scyphozoan medusa

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Fill in the blanks

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Lophotrocozoa are a clade that makes up which Phyla

A

Phylum Mollusca

Phylum Annelida

Phylum Platyhelminthes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Ecdysozoa is a clade that make up which Phyla

A

Phylum Arthropoda

Phylum Nematoda

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define and differentiate the terms acoelomate, psuedocoelomate and eucoelomate

A

All three are triploblastic with ectoderm,mesoderm and endoderm but they body cavities are different

Acoelomate - Organism has no true body cavity

Psuedocoelomate - Organism has false body cavity; body cavity is present but it doesnt arise from the mesoderm

Eucoelomate - Organism has true body cavitie that arrises from the mesoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Describe the difference between a complete digestive system and an incomplete one

A

In an incomplete digestive system there is only one opening that leads to a GVC. The organism can ingestive food but has to digest and expell the waste before it can take in another meal.

In a complete digestive system there are two openings that form a mouth—>anus digestive tract and the organism can continuously feed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

An organism that possess both male and female reproductive organs

A

Monoecious

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Organisms that only possess either male or female reproductive organs; two different body forms for male and female

A

Dioecious

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Are organisms from Class Turbellaria free-living or parasitic

A

Free-living

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Are organisms from Class Trematoda free-living or parasitic

A

parasitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Are organisms from Class Monogenea free-living or parasitic

A

parasitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Are organisms from Class Cestoda free-living or parasitic

A

parasitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Platyhelminthes that possess a GVC (blind gut) belongs to what Class

A

Turbellaria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Identify this orgnaism and the Phylum and Class it belongs to

Label the parts

A

Phylum Platyhelminthes

Class Turbellaria

Dugesia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Label the parts of this typical flatworm

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Identify this organism in cross section and label the parts

A

Dugesia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Describe the life cycle of the Clonorchis (liver fluke)

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Identify this organism and the Phylum and Class it belongs to

Label the parts

A

Phylum Platyhelminthes

Class Trematoda

Clonorchis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Label this proglottid and identify what organism this structure comes from

Study These Flashcards
A

Taenia

Class Cestoda

24
Q

Distinguish between these different structures on a Taenia

25
Define eutely
It means that every organism possess the same number of cells
26
Some Gastropods exhibit a rotation of their organs 90 and 180 degrees giving them an asymmetrical body. This is known as \_\_\_\_\_\_\_\_\_\_\_\_
Torsion
27
A molluscan that has one shell
univalve
28
A molluscan that has two shells
Bivalve
29
When a molluscan shell spiral is on one plane
planospiral
30
When a molluscan shell spirals into a cone shape
Conispiral
31
Explain right handed and left handed in gastropods
Right handed means the shell grows (spirals) to the right; Dextral Left handed means the shell grows (spirals) to the left; Sinistral
32
Are gastropods univalves or bivalves
Univalves | (when shell is present)
33
List and describe the different layers of a bivalve shell
**Periostracum** - rough outer layer of the shell **Prismatic layer** - middle layer of the shell **Nacreous layer** - smooth inner layer of the shell that is continuously secreted by the mantle
34
The first segment on an annilid is called the \_\_\_\_\_\_\_\_\_\_
Prostomium
35
The last segment on an annilida is called the \_\_\_\_\_\_\_\_\_\_
pygidium
36
Identify the Phylum and Class of the organism pictured
Phylum Mollusca Class Polyplacophora
37
Identify the Phylum and Class of the organism pictured
Phylum Mollusca Class Bivalvia
38
Identify the Phylum and Class of the organism pictured
Phylum Mollusca Class Gastropoda
39
Identify the Phylum and Class of the organism pictured
Phylum Mollusca Calss Cephalopoda
40
Identify the Phylum and Class of the organism pictured
Phylum Mollusca Class Scaphopoda
41
Are members of Class Scaphopoda univalves or bivalves
Univalves that are open at both ends
42
How do members of Class scaphopoda respire
They do not have gills; respiration occurs directly across the mantle
43
Do members of Calss Scaphopoda have tentacles
Yes but they are modified to form a captaculum (ciliated adhesive knobs at the ends of the tenticles) that sweeps through the sediment
44
What type of larva can be found in Class Scaphopoda
Trocophore larva
45
Are members of Class Scaphopoda monoecious or dioecious
Dioecious
46
What type of circulatory system is present in Class Cephalopoda
Closed circulatory system
47
Secreted as a defense mechanism; found in Cephalopods
Sepia (melanine pigment)
48
Special cells that allow cephalopods to alter their appearance
Chromatophores
49
Members of this Calss of molluscs exhibit complex behaviors, especially in prey capture and mate selection
Cephalopoda
50
Modified radula found in cephalopods
Beak
51
Do cephalopods have shells
shells are either modified (reduced) or absent in this class
52
Do bivalves have an open or closed circulatory system
It is an open circulatory system becase the blood is not always contained within vessels
53
This defining feature of gastropods is a tongue shaped structure that is used for feeding
Radula
54
What structure is indicated at the tip of the pointer
Heart
55
Label structures A and B
A. Foot B. Gills

Zoology (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions