Question

Give reasons:-
(I) From phylum playtehelminthes onwards, animals are categorised as triploblastic.
(ii) The presence of coelom in an animals body is considered as advantageous.

Answer 1

Answer:

Explanation:

(i) There are three layers of cells from which differentiated tissues can be made. This allows outside and inside body linings as well as some organs to be made. There is thus some degree of tissue formation.

(ii) Coelom is a true internal body cavity in which well-developed organs can be accommodated.