Question

Which of the following features is seen in all higher invertebrates?

Answer 1

Coelom, radial symmetry, segments?

Answer 2

Segments is the best answer; look at the arthropods, insects for example.
They have segmented bodies - head, thorax, abdomen. Other arthropods are
similarly segmented, such as scorpions, crabs, centipedes, etc.

Answer 3

nope that was wrong

Answer 4

Coelom is the largest body cavity..