Biology, asked by abhareshanRa3meeema4, 1 year ago

why is ascaris said to have tube in a tube body plan?

Answers

Answered by swetapadmamarndi
0
the body has two tubes
1- formed by body wall
2-formed within it by digestive tract
This body plan is of two types
1-prostomic i. e mouth ofdigestive tract develops first
2-deuterostomic i. e anus is formed first

annelids, roundworms, mollusc and arthropods are all prostomic

i hope it will hlp u..
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