Biology, asked by Aashefa, 1 year ago

define tube within tube body plan ​

Answers

Answered by Anonymous
1

Answer:

Explanation:

The body has two tubes, one formed by the body wall and the second formed within it by the digestive tract.

Digestive tract is a continuous tube-like structure that has two opening, a mouth for ingestion and anus for egestion such a digestive tract is called complete.

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