Radial symmetry is not found in adults of phylum: [2023]
Coelenterata
Echinodermata
Ctenophora
Hemichordata
(4)
Adults of hemichordates have bilateral symmetry.
Consider the following features: [2019]
(A) Organ system level of organisation
(B) Bilateral symmetry
(C) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics:
Annelida, Mollusca and Chordata
Annelida, Arthropoda and Chordata
Annelida, Arthropoda and Mollusca
Arthropoda, Mollusca and Chordata
(2)
Mollusca shows organ system level of organisation with unsegmented body (except Neopilina, which is a segmented mollusc), having distinct head, muscular foot, and visceral hump. They usually show bilateral symmetry, but some molluscs (example: Pila) become asymmetrical due to torsion.
Which of the following animals are true coelomates with bilateral symmetry? [2019]
Adult Echinoderms
Aschelminthes
Platyhelminthes
Annelids
