Roundworms have a pseudocoelom and hydrostatic skeleton. Their body is covered with tough cuticle. Free-living roundworms are found mainly in freshwater habitats. Parasitic roundworms have a variety of hosts, including humans. 5 мар. 2021 г.
What are roundworms mention any three characteristics of roundworms?
Many roundworms are parasitic and infect humans and other animals. These invertebrates have a snakelike shape and move with a whip-like motion. They have a sense of touch, obtain nutrients via diffusion, may detect light, and can breathe across the entire body. Roundworms can be hermaphroditic or reproduce sexually.
What are 5 characteristics of worms?
They have five paired organs that act like hearts to pump their blood through large blood vessels. They have a brain and nerve cord. They have reproductive organs and waste-removal organs. Well-developed muscles let the worms crawl through the soil or on top of the ground.
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 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.
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