Select all that applyWhy are ctenophores are no longer considered closely related to cnidarians?Multiple select question.They have a medusa-like form.They lack nematocysts.They have muscle cells derived from mesoderm.They are gelatinous.They are structurally complex.

The reasons why ctenophores are no longer considered closely related to cnidarians are:

• They lack nematocysts: Nematocysts are specialized cells that are used for capturing prey, which are characteristic of cnidarians. Ctenophores do not have these cells.

• They have muscle cells derived from mesoderm: The presence of mesoderm-derived muscle cells in ctenophores suggests a more complex body plan than that of cnidarians, which do not have a mesoderm.

The other options are not correct because:

• Having a medusa-like form: Both cnidarians and ctenophores can have a medusa-like form, so this does not distinguish them.

• Being gelatinous: Both cnidarians and ctenophores are gelatinous, so this does not distinguish them.

• Being structurally complex: Both cnidarians and ctenophores can be considered structurally complex in different ways, so this does not distinguish them.