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One example of animals having a single o...

One example of animals having a single opening to the outside that serves both as mouth as well as anus is

A

Octopus

B

Asterias

C

Ascidia

D

Fasciola

Text Solution

Verified by Experts

The correct Answer is:
D
Fasciola hapatica (sheep liver 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.
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ARIHANT NEET-ANIMALIA -I (LOWER INVERTEBRATES)-CHAPTER EXERCISES (Taking it together) medical entrances gallery (Collection of Questions Asked in NEET & in various Entrance Exams))
  1. Which one of the following is not a characteristics feature of sponge ...

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  2. The anterior V-spot in microfilaria of Wuchereria represents

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  3. One example of animals having a single opening to the outside that ser...

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  4. Which one of the following animals posesses high regeneation capacity?

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  5. The pseudocoelomate among these is

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  6. Bilaterally symmetrical deuterostome belongs to

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  7. Which one of the following groups of animals is bilaterally symmetrica...

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  8. Cold - blooded animals fall under the category of

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  9. Deuterostome condition and indeterminate radial cleavage are character...

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  10. Body cavity of adult Ascaris is

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  11. The causative agent of filaria is

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  12. Bioluminescence is well marked in

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  13. Which shows polymorphism

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  14. Ascaris is characterized by

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  15. Portuguese Man of War is

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  16. The cross-section of the body of an invertebrate is given below. Ident...

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  17. Turbellarians are free living

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  18. An acoelomate animal with bilateral symmetry is

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  19. Fasciola hepatica is a digenetic parasite. Sheep and snail are two hos...

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  20. In understanding different types of symmetry , the term used as princi...

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