Sponsor Area

Animal Kingdom

Question
CBSEENBI11025137

Tube-within-a-tube body plan is shown by

  • coelenterates

  • platyhelminthes

  • aschelminthes (nemathelminthes)

  • porifers

Solution

C.

aschelminthes (nemathelminthes)

a) This body plan is present in all advanced animals.

b) The digestive system is complete and has opeaning at both the end.

c) Example- Animals of phylum Annelida onwards.