|
Organ system level of organisation is observed in |
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|
a) |
Chordates |
b) |
Annelids |
c) |
Molluscs |
d) |
All of these |
|
Organ system level of organisation is observed in |
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|
a) |
Chordates |
b) |
Annelids |
c) |
Molluscs |
d) |
All of these |
(d)
Organ system level of organisation is seen in chordates, annelids and mollusk. i.e., in all phyla from Platyhelminthes on wards