|
Common feature in earthworm and cockroach is |
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|
a) |
Cuticle (exoskeleton) |
b) |
Solid and ventral nerve cord |
|
c) |
Nephridia |
d) |
Malpighian tubules |
|
Common feature in earthworm and cockroach is |
|||
|
a) |
Cuticle (exoskeleton) |
b) |
Solid and ventral nerve cord |
|
c) |
Nephridia |
d) |
Malpighian tubules |
(b)
In earthworm as well as cockroach, a ventral nerve cord extends back along the midventral axis from the sub-pharyngeal ganglion.