Question

phylum cnidaria tentacles. some remain in one stage their entire life, while others go through both stages. polyp cnidarians are sessile, cylindrical, and have tentacles that face upwards. within the phylum cnidaria, which of the following describes the polyp form? cylindrical shaped cnidarian with tentacles facing upward a cone shaped cnidarian with tentacles facing downward a moving, umbrella shaped cnidarian that buries itself deep into the sand

Explanation:

The text states that polyp cnidarians are sessile, cylindrical, and have tentacles that face upwards. This directly matches option A.

Answer:

A. cylindrical shaped cnidarian with tentacles facing upward