Question

Write a note on blind sac body plan.
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Answer 1

Answer:

• The blind sac body plan is exhibited by little complex animals.

• A digestive cavity with a single opening which acts as a mouth as well as anus is present. Thus, the digestive system is incomplete in these organisms.

• The food is ingested and egested through the same opening (mouth).

• Members of phylum Cnidaria and Platyhelminthes show a blind sac body plan.

Answer 2

Answer:

The blind sac body plan is the body plan where there is a single opening of the digestive system. The tube-like digestive system starts with a single opening through which the food is taken inside and the digested food is expelled through the same opening.

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