Different types of cells within an organism which phrase best completes the sentence?
1.can survive on their own
2. serve a different function
3. do not have any function
4.are all the same

Serve different function

Explanation:

The different types of the organism on earth serves different functions in the body. This is known as the cell differentiation.

In this way, different functions inside the body is performed by different organs of the body.

The differentiation of cell means that different cells of the body performs different functions of the body.

The liver cells in the liver is equipped for the digestion of fat in the body. The skin is equipped to protect the body from external pathogens et cetera.

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.

a

explanation: