The 'tube-within-a-tube' body plan is not pre | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The 'tube-within-a-tube' body plan refers to a complete digestive system with two separate openings,a mouth and an anus. This type of body plan is

Vedclass · Accepted Answer

Taenia

Vedclass · Answer

(A) The 'tube-within-a-tube' body plan refers to a complete digestive system with two separate openings,a mouth and an anus. This type of body plan is characteristic of organisms belonging to the phyla from Aschelminthes to Chordata. $Taenia$ (tapeworm) belongs to the phylum Platyhelminthes,which exhibits a 'blind-sac' body plan,meaning it has only one opening that serves as both mouth and anus,or it lacks a digestive system entirely (as in tapeworms which absorb nutrients directly). $Pheretima$ (earthworm),$Leech$ (Hirudinaria),and $Ascaris$ (roundworm) possess a complete digestive tract,thus exhibiting the 'tube-within-a-tube' body plan.

The 'tube-within-a-tube' body plan is not present in the:

Similar Questions

Which phylum exhibits the first appearance of triploblastic organization?

Which of the following phyla has an incomplete digestive tract?

Flame cells are the excretory organs of:

Which one of the following is a matching set of the class and some of its main distinguishing features?

Which of the following does not have an alimentary canal?

Vedclass Test Series

Exam Paper Generator

Online Exam Module