Question

Tube within a tube body plan is thrown by

Answer 1

Tube within tube body plan is shown in the animals having pseudoceol that is animals belonging to PHYLUM NEMETODA

Answer 2

Tube within a ‘tube body plan’ is shown by organisms of the Phylum Nematoda.

Explanation:

• Phylum Nematoda is mainly comprised of different species of ‘roundworms’, many of which are free-living or are parasites.  

• ‘Adult nematode worms’ have a tube within a tube body plan where there is a closed fluid filled space called the pseudocoelom in the body cavity.  

• This cavity works under hydrostatic forces, mainly for food intake and disposal.

• They have well developed digestive and reproductive systems, but lack a circulatory system.

Learn more about Phylum Nematoda

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