Water vascular system is found in |
|||||||
a) |
Mollusca |
b) |
Arthropoda |
c) |
Annelida |
d) |
Echinodermata |
Water vascular system is found in |
|||||||
a) |
Mollusca |
b) |
Arthropoda |
c) |
Annelida |
d) |
Echinodermata |
(d)
The characteristic feature of Echinodermata is the presence of water vascular system, which helps in the process of locomotion. It is a modified part of coelom and consists of madreporite, stone canal, ring canal, radial canal, Tiedeman’s bodies, lateral canals and tube-feet.
In which of the following, there is syncytial epidermis and longitudinal muscle cells in four bands? |
|||||||
a) |
Nematodes |
b) |
Platyhelminthes |
c) |
Annelids |
d) |
Echinoderms |
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