Roundworms (nematodes) are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle. Their body plan is simple. The cuticle is secreted by and covers a layer of epidermal cells.
What are three common characteristics of flatworms and roundworms?
Similarities Between Flatworms and Roundworms Both flatworms and roundworms are multicellular, mobile, invertebrate animals. Both flatworms and roundworms are heterotrophs. Both flatworms and roundworms show bilateral symmetry. Both flatworms and roundworms show organ level organization.
What is the main characteristic of a worm?
Characteristics. All worms are bilaterally symmetrical, meaning that the two sides of their bodies are identical. They lack scales and true limbs, though they may have appendages such as fins and bristles. Many worms have sense organs to detect chemical changes in their environments, and some have light-sensing organs.
What are the 3 characteristics of a worm?
What are 3 characteristics of worms? Worms have a long body with no legs, a distinct head and tail end, are typically small, and have a simple brain connected to a nerve cord.
What is the characteristics of nematodes roundworms?
Characteristics of Nematoda They are cylindrical in shape. They exhibit tissue level organization. Their body has a cavity or pseudocoelom. The alimentary canal is distinct, with the mouth and the anus.
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