Which of the following best describes animals found in the Bilataria?

Question

Answer

They have three germ layers but no distinct head region.

Answer

Their development restricted to aquatic environments only.

Answer

They have body organisation with radial symmetry around a central axis.

Answer

They have a body plan in which there is only one plane of symmetry , which produces mirror-image left and right halves.

Answer

Specialised tissues and organs are absent.

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