Question

drag each item above to its appropriate location in the image. note that every item may not have a match, while some items may have more than one match. sponges cnidarians flatworms mollusks annelids nematodes arthropods echinoderms

Explanation:

• Sponges: No symmetry. Sponges are simple multicellular organisms that lack a definite body plan and symmetry.
• Cnidarians: Radial symmetry. Cnidarians, such as jellyfish and corals, have body parts arranged around a central axis.
• Flatworms: Bilateral symmetry. Flatworms have a distinct head and tail, and their body can be divided into two mirror - image halves.
• Mollusks: Bilateral symmetry. Most mollusks (e.g., snails) have a bilaterally symmetrical body, although some (like bivalves) may show some modifications.
• Annelids: Bilateral symmetry. Annelids (e.g., earthworms) have a segmented body with bilateral symmetry.
• Nematodes: Bilateral symmetry. Nematodes have a cylindrical body that is bilaterally symmetrical.
• Arthropods: Bilateral symmetry. Arthropods (e.g., insects) have a segmented body and jointed appendages, with bilateral symmetry.
• Echinoderms: Radial symmetry (in adult form). Echinoderms (e.g., starfish) have a unique five - part radial symmetry as adults, although their larvae are bilaterally symmetrical.

Answer:

• Sponges: no symmetry
• Cnidarians: radial symmetry
• Flatworms: bilateral symmetry
• Mollusks: bilateral symmetry
• Annelids: bilateral symmetry
• Nematodes: bilateral symmetry
• Arthropods: bilateral symmetry
• Echinoderms: radial symmetry