Question

a scientist is studying an organism and has classified it as an animal. which statement must be true about the organism?

• it is multicellular.
• it displays radial symmetry.
• it has a backbone.
• it contains cells without nuclei.

Explanation:

All animals are multicellular eukaryotes. Radial symmetry only applies to some animals (like jellyfish), not all. A backbone is only present in vertebrate animals, not invertebrates. Animal cells are eukaryotic, meaning they all have a nucleus, so cells without nuclei are not a feature of animals.

Answer:

It is multicellular.