Respuesta :
Answer:
The characteristics to the correct phylum matching is given below:
Explanation:
- Organisms lack symmetry- Porifera. Poriferans such as sponges are without any symmetry, thus they are asymmetrical.
- Organisms have specialized stinging cells -Cnidaria. Cnidaria such as Hydra possesses stinging cells or cnidocytes located around the mouth and tentacles of the Hydra and can kill prey with toxins.
- Adult forms are sessile – Porifera. Adult sponges are sessile and spend their lives attached to a substrate.
- Two types of body plan exist as polyp and medusa – Cnidaria. Cnidarians show two distinct body plans as polyp or stalk and medusa or bell. Polyps are non-motile and Medusa are motile.
- Organisms obtain food by filtering water– Porifera. The water moves through the body of the poriferans to filter out food, absorb dissolved oxygen.
- Phenomenon of alternation of generation is observed - Cnidaria. Alternation of generation is a type of life cycle which switches between two forms. In cnidarian, the asexual polyp alters with the sexual medusa.
