Biology, asked by zahrah, 1 year ago

why ascaris said to have a tube within a tube body plan ?

Answers

Answered by shubham108
1
tube within tube body plane simply mean to copmlete digestive system...
now u hv understood it..

zahrah: yes boss
Answered by Anonymous
1
It refers to the development of a fluid-filled cavity between the outer body wall and the digestive tube. The nature of this body cavity has led to the grouping of metazoa into three grades, acoelomate, pseudocoelomate, and eucoelomate

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