Which statements describe the six elements found in all living things? Check all that apply. 1.Carbon is the basis of all living things.
2.Sulfur is found in bones, where it provides strength.
3.Nitrogen is found in certain foods.
4.Oxygen and hydrogen combine with each other to form water.
5.Only carbon, hydrogen, and phosphorus are found in organic compounds.
6.Carbon, oxygen, hydrogen, nitrogen, phosphorus, and sulfur are found in organic
compounds.

Explanation:

Carbon is the basis of all living things

Nitrogen is found in certain foods

Oxygen and hydrogen combine with each other to form water

Carbon, oxygen, hydrogen, nitrogen, phosphorus and sulfur are found in organic compounds

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.