1.they have no head and no central nervous system
2. they have stinging cells around there mouths
3. the most simple living organism that very shape size and color ​


Sagot :

Answer:

  1. Sponges
  • Sponges are the only multicellular animals that have no nervous system.

    2. Cnidarians

  • Cnidarians contain specialized cells known as cnidocytes (“stinging cells”), which contain organelles called nematocysts (stingers). These cells are present around the mouth and tentacles.

    3. Cells

  • Cells are the building blocks of life – all living organisms are made up of them.

All my answers are based on G.

Hope this helps. ;)

Goodluck.