DIFFERENTIATION BETWEEN NON CHORDATA & CHORDATA -
|
S.No.
|
Character
|
Non Chordata
|
Chordata
|
|
1
2
3
|
Fundamental characters
Notochord or chorda dorsalis
Gill slits
Nervous system
|
Absent in every stage of life cycle
Absent in every stage of life cycle
Ventral
Double
Solid
|
Present in any stage of life cycle
Present in any stage of life cycle
Dorsal
Single
Hollow
|
|
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
Others characters
Post anal tail
Mouth
Anus
Liver
Heart
Flow of blood
R.B.C.
Circulatory system
Position of alimentary canal
Symmetry
Grade
Body wall
Coelome
Reproduction
Larvae
Regeneration
Temperature
Total animals
|
Absent
Generally in first segment
Generally in last segment
Absent
Dorsal
On dorsal, posterior to anterior
On ventral, anterior to posterior
Absent
Open / closed / absent
Dorsal to nerve cord
All type
All types
Diploblastic / triploblastic
All types
Mainly asexual
Generally present
More
Cold blooded
95-97%
|
Present
After first segment
Before last segment
Present
Ventral
Anterior to posterior
Posterior to anterior
Present
Closed
Ventral to nerve cord
Bilateral
Organ system
Triploblastic
Enterocoelic
Sexual
Generally absent
Less
Cold blooded / warm blooded
3-5%
|
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