Question

1. what type of body symmetry do animals in phyla platyhelminthes, annelida, and nematoda have?

asymmetry
bilateral symmetry
radial symmetry
asymmetry and radial symmetry

Explanation:

Animals in phyla Platyhelminthes (flatworms), Annelida (segmented worms), and Nematoda (roundworms) are known to exhibit bilateral symmetry. Bilateral symmetry means the body can be divided into two mirror - image halves along a single plane. Asymmetry is seen in organisms like some sponges, and radial symmetry is seen in organisms like cnidarians (e.g., jellyfish). So these three phyla have bilateral symmetry.

Answer:

B. bilateral symmetry