|
Which of the following animals have a single opening to the outside that serves both as mouth as well as anus? |
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a) |
Octopus |
b) |
Asterias |
c) |
Ascidia |
d) |
Fasciola |
|
Which of the following animals have a single opening to the outside that serves both as mouth as well as anus? |
|||||||
|
a) |
Octopus |
b) |
Asterias |
c) |
Ascidia |
d) |
Fasciola |
(d)
Fasciola hepatica (Sheep lever fluke) belongs to phylum-Platyhelminthes. These worms have incomplete alimentary canal, there is a single opening for both digestion and egestion. This is also called as blind sac body plan.