Which one of the following living organisms completely lacks a cell wall?

In case of poriferans the spongocoel is lined with flagellated cells called :

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum:

Match the name of the animal (column I), with one characteristics (column II), and the phylum/class (column III) to which it belongs:

Read the following statements.
(A) Metagenesis is observed in Helminths.
(B) Echinoderms are triploblastic and coelomate animals.
(C) Round worms have organ—system level of body organization.
(D) Comb plates present in ctenophores help in digestion.
(E) Water vascular system is characteristic of Echinoderms.
Choose the correct answer from the options given below.

Match list I with list II.

Which one of the following living organisms completely lacks a cell wall?

Match List I with II.

Radial symmetry is NOT found in adults of phylum____.

In case of poriferans the spongocoel is lined with flagellated cells called :

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum: