What what is the function of muscles tissue in point​

The functions of muscle tissue are as follows;

1.Muscles allow a person to move, speak, and chew.

2.They control heartbeat, breathing, and digestion.

3. its main function is to allow movement.

4. It help in the circulation process.

5. it is needed to maintain good postures.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.