Which Clade in the Phylum Cnidaria Includes "Jellies" with Rounded

Question

Which clade in the phylum Cnidaria includes "jellies" with rounded (as opposed to boxlike)medusae?
A) Hydrozoa
B) Scyphozoa
C) Anthozoa
D) Cubozoa

Accepted Answer

Scyphozoa is the clade in the phylum Cnidaria that includes "jellies" with rounded medusae. Hydrozoa includes hydrozoans, which have both polyp and medusa stages. Anthozoa includes corals and sea anemones, which lack a medusa stage. Cubozoa includes box jellyfish, which have box-shaped medusae.