1.

Write the features of porifera and echinodermata .

Answer» porifera :-
- sedentary 
- sessile
- appendages are absent
- CELLULAR level of organisation
- exo- skeleton
- RADIAL SYMMETRY
- non-motile
- reproduction is ASEXUAL by budding . 
e.g.sycon , eupletilia



echinodermata :-

- found in bottom of the SEA
- triploblastic
- coelomic cavity
- reproduction is sexual 
- radial symmetry 
e.g.starfish , feather fish , etc.


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