Question

Write a note on blind sac body plan.​

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 single opening functions as both mouth for ingestion (intake of food) and anus for egestion (undigested waste is passed out) such a digestive tract is called incomplete animals having blind sac body plan show tissue grade body organization.

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