Animals Flashcards

1
Q

Key features of animals

A

Body symmetry and cephalisation
Coelom
Opening in gut and blood systems
Tissue layers

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

What are the 3 types of symmetry

A
Asymmetry 
Radial symmetry(same all round)
Bilateral symmetry
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Tissue layers include

A

Ectoderm:epithelial layer and nerve system
Endoderm:wall of digestive system
Secondary germ layer :mesoderm

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

Why is the mesoderm important

A

Mesoderm forms chyme which reacts to epithelial to form tissues

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

Coelom

A

Acoelomate(diplo)

Coelom triplo

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

Advantages of a coelom

A

Allows space
Hydrostatic force
Peristalsis

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

Animal kingdom phyla

A
Cnidaria                Anthropoids 
Porifera 
Platyhelminthes 
Annelida 
Chordata
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Porifera characteristics

A
Asymmetrical  
collar cells line interior 
Acoelomate 
No tissue layers 
Protected by minute spicules
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Sessile:

A

Fixed to one spot

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

Spicules are made of

A

Calcium silica or protein

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

Cnidaria characteristics

A
Aquatic                  Has cnidocytes 
Acoelomate 
Radial symmetry 
Diploblastic 
Digestive cavity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cnidocytes

A

Specialised stinging cells

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

Platyhelminthes characteristics

A
Doris centrally flattened 
Bilateral symmetry       
One opening cephalisation
Acoelomate 
Triplo
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Annelida characteristics

A
Segmented+cylindrical 
Bilateral symmetry 
 Triploblastic   
coelom 
Cephalisation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Advantages of segmentation

A

Improve ability to move

Through gut = flexib and hydrostatic skeleton

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

Arthropoda characteristics

A
Bilateral symmetry 
Haemocel  and thru gut 
Segmented 
Cephalisation 
triploblastic
17
Q

What makes anthropoids strong

A

Waterproof exoskeleton
Paired and jointed appendages
Muscular system

18
Q

Chordata characteristics

A

Notochord
Post anal tail
Doris hollow tubular nerve chord
Pharyngeal