CBSE Class 9 Answered
Expert Answer
|
Annelida |
Platyhelminthes |
|
Dorsoventrally flattened |
Body divided into small rings |
|
Appendages (for locomotion) are absent |
Appendages are absent |
|
Ganglia are absent |
Nervous system contains ganglia |
|
True body cavity is present |
True body cavity is absent |
|
Have segmented body |
Do not have segmented body |
|
Nephridia are organs of excretion in the annelids |
Protonephridia are organs of excretion in platyhelminthes |
|
Example - Earthworm |
Example - Flatworm |
|
Annelida |
Platyhelminthes |
|
Dorsoventrally flattened |
Body divided into small rings |
|
Appendages (for locomotion) are absent |
Appendages are absent |
|
Ganglia are absent |
Nervous system contains ganglia |
|
True body cavity is present |
True body cavity is absent |
|
Have segmented body |
Do not have segmented body |
|
Nephridia are organs of excretion in the annelids |
Protonephridia are organs of excretion in platyhelminthes |
|
Example - Flatworm |
Example - Earthworm |
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