One of the most prominent differences between roundworms and segmented worms is their circulatory systems. Segmented worms have a complete circulatory system, while round worms do not. A segmented worm's circulatory system includes blood, heart, capillary system and hemoglobin. 21 июл. 2017 г.
How are roundworms and earthworms different?
An earthworm has a full digestive system and its diet consists of dirt and plant matter. A roundworm has a definite digestive system and its diet consists of other animals and plants.
Why are roundworm and earthworm not in the same phylum?
The main difference between Ascaris and earthworm is that Ascaris is a parasitic roundworm that causes illness whereas earthworm is a segmented worm beneficial to the soil. Furthermore, Ascaris belongs to the phylum Nematoda while earthworm belongs to the phylum Annelida.
Why are earthworms more complex than roundworms?
Characteristics of Segmented Worms Segmented worms have a well-developed body cavity filled with fluid, which serves as a hydroskeleton, a supportive structure that helps move the worm's muscles. Segmented worms also tend to have organ systems that are more developed than the roundworms or flatworms.
How are earthworms different from roundworms and flatworms?
Earthworm Phylum Characteristics Flatworms (phylum Platyhelminthes) and roundworms (phylum Nematoda) differ in shape, means of locomotion, how their digestive systems function, and in the ways they are harmful to human beings. While both species are called worms, they are not closely related.
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