Question

Organisms attached to substratum generally
possess :
Asymmetrical body
2) Radial symmetry
3) One single opening of digestive canal
4) Cilia on the surface to create water current​

Answer 1

Answer:

option 4th cilia on surface to create water current

Answer 2

Answer:

2) radial symmetry

Explanation:

all organisms belongs to cnidaria or echinodermata radially symmetrical that is when cut from any part is divided into two halves